CN114527819A

CN114527819A - Base band chip, voltage adjusting method and terminal equipment

Info

Publication number: CN114527819A
Application number: CN202210126404.XA
Authority: CN
Inventors: 周洁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-05-24
Anticipated expiration: 2042-02-10
Also published as: WO2023151416A1; CN114527819B

Abstract

The embodiment of the application discloses a baseband chip, a voltage regulation method and terminal equipment, wherein the baseband chip comprises at least one subsystem and a DVFS management system, wherein each subsystem is respectively used for calculating expected voltage in the next regulation period; the DVFS management system is used for sending a voltage adjustment request to the power management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period.

Description

Base band chip, voltage adjusting method and terminal equipment

Technical Field

The invention relates to the field of chip design, in particular to a baseband chip, a voltage adjusting method and terminal equipment.

Background

In the existing cellular mobile system terminal, a Dynamic Voltage and Frequency Scaling (DVFS) scheme is mostly in a scene level, for example, for paging (paging), the Voltage and Frequency are increased during paging, the Voltage and Frequency are decreased after paging is completed, and an interval between two Voltage adjustments is mostly more than 10 ms. The voltage and the frequency are improved aiming at the specific time slot, the voltage and the frequency are improved before the specific time slot comes, the voltage and the frequency are reduced after the specific time slot is ended, and the interval between two times of voltage adjustment is more than 500 us.

It can be seen that the conventional DVFS technology is limited by decision time, transmission time, and adjustment time in the voltage adjustment process, and cannot further shorten the interval between two voltage adjustment changes, which causes the problem of overlong voltage change interval, and further causes the defects of large system power consumption and incapability of implementing fine control of voltage adjustment.

Disclosure of Invention

The embodiment of the application provides a baseband chip, a voltage adjustment method and terminal equipment, which can effectively shorten the processing time of voltage adjustment, thereby reducing the power consumption of a system and simultaneously realizing the fine control of voltage adjustment processing.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a baseband chip, where the baseband chip includes at least one subsystem and a DVFS management system,

each subsystem is used for calculating expected voltage in the next adjusting period;

the DVFS management system is used for sending a voltage adjustment request to the power management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period.

In a second aspect, an embodiment of the present application provides a voltage adjustment method, where the voltage adjustment method is applied to a terminal device, the terminal device is configured with a baseband chip and a power management module, the power management module is configured to supply power to the baseband chip, the baseband chip includes at least one subsystem and a DVFS management system, and the method includes:

each subsystem calculates the desired voltage in the next regulation cycle;

the DVFS management system sends a voltage adjustment request to the power management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes: a power management module and the baseband chip of the first aspect, the power management module being configured to supply power to the baseband chip.

The embodiment of the application provides a baseband chip, a voltage regulation method and terminal equipment, wherein the baseband chip comprises at least one subsystem and a DVFS (dynamic Voltage scaling) management system, wherein each subsystem is respectively used for calculating expected voltage in the next regulation period; the DVFS management system is used for sending a voltage adjustment request to the power supply management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period. That is to say, in the embodiment of the present application, the DVFS management system configured in the baseband chip of the terminal device may respond to the voltage adjustment requirement of the subsystem in time by acquiring the expected voltage of the subsystem, so as to shorten the sensing decision time of the voltage adjustment, and at the same time, may further shorten the transmission time and the adjustment time of the voltage adjustment by using the high-speed data interface and the fast-response power management module, thereby effectively shortening the processing time of the voltage adjustment, reducing the power consumption of the system, and simultaneously implementing the fine control of the voltage adjustment processing.

Drawings

FIG. 1 is a schematic diagram of a DVFS scheme;

FIG. 2 is a block diagram of an implementation framework of a DVFS scheme;

FIG. 3 is a first schematic diagram of the baseband chip;

FIG. 4 is a schematic diagram of the DVFS management system;

FIG. 5 is a schematic diagram illustrating an implementation effect of a method for adjusting a voltage;

FIG. 6 is a first schematic flow chart illustrating an implementation of a voltage adjustment method;

FIG. 7 is a schematic diagram illustrating a second implementation flow of the voltage adjustment method;

fig. 8 is a schematic diagram of a composition structure of the terminal device;

FIG. 9 is a schematic diagram of a baseband chip;

FIG. 10 is a third schematic flow chart illustrating an implementation of the voltage adjustment method;

FIG. 11 is a fourth schematic flow chart illustrating an implementation of the voltage adjustment method;

FIG. 12 is a schematic diagram of a power management module;

FIG. 13 is a diagram illustrating a voltage adjustment process.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.

The Dynamic Voltage and Frequency Scaling (DVFS) technology is designed to achieve low power consumption by a combination of software and hardware, and has attracted much attention in designing low power consumption of microprocessors. The DVFS technology allows the working voltage and frequency of the circuit to be dynamically adjusted on the premise of keeping the system working normally, so that the power consumption of the circuit can be reduced, and the service life of the circuit can be prolonged.

A typical DVFS system workflow includes: sampling a system signal load, carrying out performance calculation prediction through a corresponding algorithm, carrying out DVFS adjustment on a circuit working state according to a prediction result, and then realizing state adjustment and maintenance by a power supply management system. The adjustment of the DVFS comprises dynamic voltage adjustment and clock frequency adjustment, when the working frequency is predicted to change from high to low, the frequency is reduced first, and then the voltage is reduced; when the predicted operating frequency increases, the voltage is increased first, and then the frequency is increased.

In the existing cellular mobile system terminal, the DVFS scheme is mostly in a scene level, for example, for paging (paging), the voltage and frequency are increased during paging, the voltage and frequency are decreased after paging is completed, and the interval between two voltage adjustments is mostly more than 10 ms. Fig. 1 is a schematic diagram of a DVFS scheme, as shown in fig. 1, in an advanced specific timeslot, before the specific timeslot comes, the voltage and the frequency are raised (for example, the voltage is raised from V1 to V2), after the specific timeslot is ended, the voltage and the frequency are reduced (for example, the voltage is reduced from V2 to V1), and the voltage adjustment interval t is more than 500 us.

Fig. 2 is a schematic diagram of an implementation framework of a DVFS scheme, and as shown in fig. 2, a conventional DVFS framework mainly includes a baseband part, a radio frequency part, and a power management module, where the power management module is responsible for supplying power to the baseband part and the radio frequency part of a terminal, a power supply voltage is controlled by the baseband part, the baseband part sends a voltage adjustment instruction to the power management module, and the power management module adjusts the voltage after receiving the voltage adjustment instruction.

If the baseband part or the radio frequency part needs to increase the working frequency, an adjustment instruction for increasing the voltage is generally sent to the power management module, and the baseband part or the radio frequency part can increase the frequency after the power management module completes the adjustment of the corresponding increased voltage. If the baseband part or the radio frequency part needs to reduce the working frequency, the baseband part or the radio frequency part can directly reduce the frequency and then reduce the voltage, so that the purpose of safe and stable work is achieved, and the abnormal phenomenon caused by voltage regulation is avoided.

In order to solve the above problem, in the embodiment of the present application, the DVFS management system configured in the baseband chip of the terminal device may respond to the voltage adjustment requirement of the subsystem in time by acquiring the expected voltage of the subsystem, so as to shorten the sensing decision time of the voltage adjustment, and at the same time, may further shorten the transmission time and the adjustment time of the voltage adjustment by using the high-speed data interface and the fast-response power management module, thereby effectively shortening the processing time of the voltage adjustment, reducing the power consumption of the system, and simultaneously implementing the fine control of the voltage adjustment processing.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

An embodiment of the present application provides a baseband chip including at least one subsystem and a DVFS management system.

In an embodiment of the present application, fig. 3 is a schematic diagram of a composition structure of a baseband chip, as shown in fig. 3, a baseband chip 10 may include at least one subsystem 11, where the at least one subsystem 11 may all operate in the same voltage domain; the baseband chip 10 may further include a DVFS management system 12, and the DVFS management system 12 may be configured to perform a voltage adjustment process.

Further, in the embodiment of the present application, each subsystem 11 may be used to calculate the expected voltage in the next adjustment period.

It will be appreciated that in embodiments of the present application, the expected voltage for each subsystem in the next regulation cycle may be predictive of the voltage required for each subsystem in the next regulation cycle. The expected voltage of each subsystem in the next regulation period can be used for predicting the voltage required by each subsystem when executing a task, and can also be used for predicting the voltage required by each subsystem when being in a low power consumption mode after the task is executed.

That is, in the embodiment of the present application, regardless of whether the subsystem is in an operating state to perform a task, as long as the voltage demanded by the subsystem is changed, a desired voltage in the next adjustment cycle can be generated.

It should be noted that, in the embodiment of the present application, each subsystem may be specifically configured to perform decomposition processing on a current task, and determine a subtask corresponding to the current task; the desired voltage in the next adjustment period is determined from the subtask.

In the embodiment of the present application, each subsystem in the baseband chip may perform decomposition processing on a current task first, so that at least one sub-task corresponding to the current task may be obtained.

It should be noted that, in the embodiment of the present application, for any one subsystem of the at least one subsystem of the baseband chip, after the task is acquired, the task may be decomposed into at least one subtask, and then the at least one subtask is completed according to a time sequence. For example, for the current task, the subsystem may decompose and obtain a plurality of subtasks corresponding to the current task, which are subtask 1, subtask 2, subtask 3, subtask 4, and subtask 5, respectively, and then the subsystem may sequentially execute subtask 1, subtask 2, subtask 3, subtask 4, and subtask 5.

In the embodiment of the application, after the decomposition of the current task is completed and the subtasks corresponding to the current task are obtained, each subsystem may determine an expected voltage of the subtask in a next adjustment period, and then may transmit the expected voltage to the DVFS management system, so that the DVFS management system may perform voltage adjustment processing according to the expected voltage.

Further, in embodiments of the present application, each subsystem may predict the voltage required to perform a subtask to determine the desired voltage in the next adjustment cycle. Specifically, the subsystem may first determine a frequency corresponding to the execution of the subtask, and then further determine a corresponding voltage using the frequency. For example, table 1 shows the correspondence relationship between the subtasks, the frequencies and the voltages, as shown in table 1, when different subtasks are executed, the frequencies required by the subsystems may be different, and accordingly, the required voltages may also be different, for example, for subtask 3, the subsystem may predict that the corresponding operating frequency may be 500MHz, and then may determine that the expected voltage in the next adjustment period may be 0.8V.

TABLE 1

	Frequency (MHz)	Voltage (V)
			Subtask 1	100	0.6
Subtask 2	200	0.7
			Subtask 3	500	0.8
Subtask 4	300	0.7
			Subtask 5	100	0.5

Further, in the embodiment of the present application, the sub-system sequentially executes the sub-tasks obtained after the decomposition, and therefore, the sub-system also sequentially transmits the expected voltages of the different sub-tasks in the next adjustment period to the DVFS management system. For example, before the sub task 1 is executed, the subsystem may first notify the DVFS management system of the expected voltage of the sub task 1 in the next adjustment period, and after the sub task 3 is completed and before the sub task 4 is executed, the subsystem may notify the DVFS management system of the expected voltage of the sub task 4 in the next adjustment period. Specifically, the subsystem may choose to sequentially notify the DVFS management system of the desired voltages of the respective subtasks in the next adjustment cycle in a voting manner.

It should be noted that, in the embodiment of the present application, after completing one subtask and before starting the next subtask, the subsystem may further enter a preset low power consumption mode, and at this time, the subsystem may transmit a preset low power consumption voltage corresponding to the low power consumption mode to the DVFS management system as an expected voltage in the next adjustment period.

Further, in the embodiment of the present application, the DVFS management system 12 may be configured to send a voltage adjustment request to the power management module; the voltage adjustment request is used for instructing the power management module to output a target voltage to the baseband chip in a next adjustment period, and specifically, the target voltage is not less than an expected voltage of each subsystem in 11 next adjustment periods.

In an embodiment of the present application, fig. 4 is a schematic diagram of a composition structure of a DVFS management system, and as shown in fig. 4, the DVFS management system 12 may include a sensing unit 121 and a decision unit 122.

It should be noted that, in the embodiment of the present application, the sensing unit may be configured to obtain a desired voltage of each subsystem in a next adjustment period; the decision unit may be configured to determine the target voltage according to an expected voltage of each subsystem in a next adjustment period.

Based on fig. 4 described above, the DVFS management system 12 may include a voltage regulation control unit 123 and a high-speed data interface 124.

It should be noted that, in the embodiment of the present application, the voltage regulation control unit may be configured to generate a voltage regulation request according to a voltage value of the target voltage; the voltage regulation control unit may be specifically configured to perform a packing process on the target voltage according to a preset compression format, and generate a voltage regulation request.

It should be noted that, in the embodiment of the present application, the high-speed data interface may be configured to send a voltage adjustment request to the power management module; the high-speed data interface may be specifically configured to send the voltage adjustment request to the power management module according to a preset interface format.

That is, in the embodiment of the present application, the DVFS management system may be composed of a sensing unit, a decision unit, a voltage regulation control unit, and a high-speed data interface. The sensing unit can be used for acquiring expected voltage of each subsystem in at least one subsystem, the decision unit can be used for determining final target voltage according to the expected voltage of each subsystem, the voltage regulation control unit can pack the target voltage according to an agreed format and then send the target voltage to the high-speed data interface, and the high-speed data interface can further send the target voltage to the power management module.

It is understood that in the embodiment of the present application, the power management module and the baseband chip can communicate with each other, so that the request for adjusting the voltage and the feedback process can be implemented.

Further, in an embodiment of the present application, the power management module may include a high-speed communication interface, a control register, and a DCDC circuit; wherein the high-speed communication interface may be to receive the voltage adjustment request; the control register may be to control the DCDC circuit to output the target voltage based on a voltage value of the target voltage indicated by the voltage adjustment request.

It should be noted that, in the embodiment of the present application, the DVFS management system may communicate with each subsystem separately.

Further, in the embodiment of the present application, the DVFS management system may be specifically configured to obtain an expected voltage of each subsystem in a next adjustment period; the target voltage is then determined based on the desired voltage for each subsystem in the next adjustment cycle.

In the embodiment of the application, after the expected voltage of each subsystem in the next regulation period is obtained, the DVFS management system may determine a target voltage for performing voltage regulation processing according to the expected voltage, and then generate a voltage regulation request according to the target voltage, so that the DVFS management system may instruct the power management module to output the target voltage to the baseband chip in the next regulation period through sending of the voltage regulation request.

It will be appreciated that in embodiments of the present application, the target voltage may be used to determine the adjusted voltage. The target voltage may be generated by the DVFS management system in combination with all desired voltages of all subsystems in the baseband chip in the next adjustment period and the current system voltage.

Further, in the embodiment of the present application, the DVFS management system may be further configured to determine whether the voltage adjustment condition is satisfied according to the expected voltage of each subsystem in the next adjustment period and the current system voltage. Specifically, the DVFS management system may compare an expected voltage of the subsystem in a next adjustment period with a current system voltage to obtain a comparison result, so as to further determine whether the voltage adjustment condition is satisfied according to the comparison result.

It is understood that in embodiments of the present application, the current system voltage may characterize the current voltage of the baseband chip in the terminal device. In particular, since all subsystems in the baseband chip can operate in the same voltage domain, the current system voltage can also characterize the current voltage of each subsystem in the baseband chip.

It should be noted that, in the embodiment of the present application, the DVFS management system may be specifically configured to determine that one subsystem satisfies the voltage regulation condition if an expected voltage of the one subsystem in a next regulation period is greater than a current system voltage.

That is, in the embodiment of the present application, after comparing the expected voltage of the subsystem in the next regulation period with the current system voltage, if the comparison result is that the expected voltage is greater than the current system voltage, it may be considered that the regulation processing of the boosted voltage needs to be performed, and then the DVFS management system may determine that the voltage regulation condition is satisfied.

It is understood that, in the embodiment of the present application, when the obtained expected voltage of any one subsystem in the next adjustment period is greater than the current system voltage, it may be determined that the voltage adjustment process is required. For example, if the desired voltage notified by one subsystem is 0.8V and the current system voltage is 0.6V, it may be determined that the voltage adjustment condition is satisfied.

It should be noted that, in the embodiment of the present application, the DVFS management system may be specifically configured to, if an expected voltage of one subsystem in a next adjustment period is smaller than a current system voltage, further determine whether a voltage adjustment condition is satisfied according to an expected voltage of another subsystem in the next adjustment period and the current system voltage.

That is to say, in the embodiment of the present application, after comparing the expected voltage of the subsystem in the next adjustment period with the current system voltage, if the comparison result shows that the expected voltage is smaller than the current system voltage, it may be considered that the adjustment processing for reducing the voltage needs to be performed, however, the DVFS management system needs to consider the voltage adjustment requirements of other subsystems besides the subsystem, and therefore the DVFS management system needs to further determine whether the voltage adjustment condition is satisfied according to the expected voltage of the other subsystems in the next adjustment period and the current system voltage.

It is understood that, in the embodiment of the present application, when the acquired expected voltage of any one subsystem in the next adjustment period is smaller than the current system voltage, the DVFS management system cannot directly determine whether the voltage adjustment process needs to be performed, but needs to further determine the process in combination with the magnitude relationship between the expected voltage of other subsystems in the next adjustment period and the current system voltage.

Further, in the embodiment of the present application, the DVFS management system may be specifically configured to determine that the one subsystem satisfies the voltage regulation condition if a maximum voltage of expected voltages of other subsystems in a next regulation period is less than a current system voltage.

It is to be understood that, in the embodiment of the present application, after comparing the maximum voltage of the expected voltages of the other subsystems in the next regulation period with the current system voltage, if the comparison result is that the maximum voltage is equal to the current system voltage, it may be considered that the maximum voltage of the voltages required by all subsystems in the next regulation period cannot be lower than the current system voltage, and thus it may be determined that the voltage regulation condition is not satisfied, that is, the DVFS management system may determine that the voltage regulation condition is not satisfied.

It is understood that, in the embodiment of the present application, after comparing the maximum voltage of the expected voltages of the other subsystems in the next regulation period with the current system voltage, if the maximum voltage is smaller than the current system voltage as a result of the comparison, the DVFS management system may consider that the voltages required by all the subsystems are lower than the current system voltage, and thus may determine that the voltage regulation condition is satisfied, that is, the DVFS management system may determine that the voltage regulation condition is satisfied.

Further, in embodiments of the present application, the DVFS management system may be specifically configured to determine the desired voltage as the target voltage if the desired voltage of the subsystem is greater than the current system voltage during a next trim cycle.

That is to say, in the embodiment of the present application, when the DVFS management system determines the target voltage, if the expected voltage of the subsystem in the next adjustment period is greater than the current system voltage, at this time, the adjustment process of the boost voltage needs to be performed, and accordingly, the DVFS management system may directly determine the expected voltage as the target voltage.

Further, in an embodiment of the present application, if the expected voltage of the subsystem in the next regulation period is less than the current system voltage, the DVFS management system may be specifically configured to determine the maximum voltage of the expected voltages of the other subsystems in the next regulation period as the target voltage.

That is to say, in the embodiment of the present application, when the DVFS management system determines the target voltage, if the expected voltage of the subsystem in the next adjustment period is smaller than the current system voltage, the DVFS management system needs to perform adjustment processing of reducing the voltage at this time, and accordingly, the DVFS management system may determine the maximum voltage of the expected voltages of the other subsystems in the next adjustment period as the target voltage.

It can be seen that, in the embodiment of the present application, for one subsystem, the corresponding target voltage may be the expected voltage of the subsystem in the next adjustment period, or may be the maximum voltage of the expected voltages of other subsystems in the next adjustment period, that is, the target voltage is not less than the expected voltage of each subsystem in the next adjustment period.

The DVFS management system configured by the baseband chip provided by the embodiment of the application can acquire the voltage regulation requirements of each subsystem through a voting mechanism, and designs a DVFS scheme system architecture supporting In-slot by using a high-speed transmission interface and a quick-response power supply. When one slot is realized, accurate and high-speed voltage in (for example, when sub-carrier space (SCS) is 30, 1slot is 500us, and when SCS is 60, 1slot is 250us) is switched for many times, for example, in 500us, a baseband uses high voltage only in dozens of microseconds of decoding/demodulation, and voltage reduction and power saving are immediately performed after completion. It is even possible to break 500us down into several segments, each using a different voltage.

Fig. 5 is a schematic diagram illustrating an implementation effect of the method for adjusting voltage, and as shown in fig. 5, taking a Physical Downlink Control Channel (PDCCH) as an example, in a time window of 0.5ms, according to a service requirement and a current situation, a voltage adjustment processing procedure of 1 liter (voltage is increased from V1 to V2) and 1 drop (voltage is decreased from V2 to V1) can be completed, so that fine Control of voltage adjustment processing is implemented.

The embodiment of the application provides a baseband chip, which comprises at least one subsystem and a DVFS (digital video frame File System) management system, wherein each subsystem is respectively used for calculating expected voltage in the next regulation period; the DVFS management system is used for sending a voltage adjustment request to the power supply management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period. That is to say, in the embodiment of the present application, the DVFS management system configured in the baseband chip of the terminal device may respond to the voltage adjustment requirement of the subsystem in time by acquiring the expected voltage of the subsystem, so as to shorten the sensing decision time for voltage adjustment, and at the same time, may further shorten the transmission time and the adjustment time for voltage adjustment by using the high-speed data interface and the fast-response power management module, so as to effectively shorten the processing time for voltage adjustment, thereby reducing the system power consumption, and simultaneously implementing the fine control of voltage adjustment processing.

An embodiment of the present application provides a voltage adjustment method, which may be applied to a terminal device, where the terminal device may be configured with a baseband chip and a power management module, the power management module is configured to supply power to the baseband chip, and the baseband chip may include at least one subsystem and a DVFS management system.

It should be noted that, in the embodiment of the present application, each subsystem may first calculate the expected voltage in the next adjustment period; then, the DVFS management system sends a voltage adjustment request to the power management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period.

It can be understood that, in the embodiment of the present application, when each subsystem calculates the expected voltage in the next adjustment period, each subsystem may first perform decomposition processing on the current task, and determine a subtask corresponding to the current task; the desired voltage in the next adjustment period may then be determined from the subtasks.

Further, in an embodiment of the present application, the DVFS management system may obtain an expected voltage of each subsystem in a next adjustment period; the target voltage may then be further determined based on the expected voltage of each subsystem in the next adjustment cycle.

Further, in an embodiment of the present application, the DVFS management system may include a sensing unit and a decision unit, where the sensing unit may specifically obtain an expected voltage of each subsystem in a next adjustment period; the decision unit may specifically determine the target voltage according to an expected voltage of each subsystem in a next adjustment period.

Further, in an embodiment of the present application, the DVFS management system may further include a voltage regulation control unit and a high-speed data interface. Specifically, when the DVFS management system sends a voltage adjustment request to the power management module, the voltage regulation control unit may generate the voltage adjustment request according to a voltage value of the target voltage; the high-speed data interface may send a voltage adjustment request to the power management module.

It should be noted that, in the embodiment of the present application, the voltage regulation control unit may perform a packing process on the target voltage according to a preset compression format, and generate the voltage regulation request. Accordingly, the high-speed data interface may send the voltage adjustment request to the power management module in a preset interface format.

Further, in the embodiment of the present application, the DVFS management system may further determine whether the voltage adjustment condition is satisfied according to the expected voltage of each subsystem in the next adjustment period and the current system voltage. Specifically, if the expected voltage of one subsystem in the next regulation period is greater than the current system voltage, the DVFS management system may determine that the one subsystem satisfies the voltage regulation condition. If the expected voltage of one subsystem in the next adjustment period is less than the current system voltage, the DVFS management system further needs to determine whether the voltage adjustment condition is satisfied according to the expected voltage of the other subsystem in the next adjustment period and the current system voltage. Wherein if the maximum voltage of the expected voltages of the other subsystems in the next regulation period is less than the current system voltage, the DVFS management system may determine that the one subsystem satisfies the voltage regulation condition.

Further, in the embodiment of the present application, when the DVFS management system determines the target voltage according to the expected voltage of each subsystem in the next regulation period, if the expected voltage of one subsystem in the next regulation period is greater than the current system voltage, the DVFS management system may determine the expected voltage of the subsystem in the next regulation period as the target voltage.

Further, in an embodiment of the present application, when the DVFS management system determines the target voltage according to the expected voltage of each subsystem in the next adjustment cycle, if the expected voltage of one subsystem in the next adjustment cycle is smaller than the current system voltage, the DVFS management system may determine a maximum voltage of the expected voltages of the other subsystems in the next adjustment cycle as the target voltage.

Fig. 6 is a schematic diagram of a first implementation flow of the voltage adjustment method, as shown in fig. 6, in an embodiment of the present application, a method for adjusting a voltage by a terminal device may include the following steps:

step 101, when an expected voltage of a first subsystem in a next regulation period is obtained, judging whether a voltage regulation condition is met or not by a DVFS (digital video frequency system) management system according to the expected voltage and a current system voltage; the first subsystem is any one of at least one subsystem.

In an embodiment of the present application, when acquiring an expected voltage of the first subsystem in a next adjustment period, the DVFS management system may determine whether a voltage adjustment condition is satisfied according to the expected voltage and a current system voltage.

It is understood that in the embodiments of the present application, the terminal device may be various electronic devices having a communication function, including but not limited to mobile electronic devices such as a mobile phone, a notebook computer, a Digital broadcast receiver, a Personal Digital Assistant (PDA), a tablet computer (PAD), a Portable Multimedia Player (PMP), a vehicle-mounted electronic device (e.g., a car navigation electronic device), and the like, and fixed electronic devices such as a Digital Television (TV), a desktop computer, and the like.

It should be noted that, in the embodiment of the present application, the terminal device may include a power management module and a baseband chip, where the power management module and the baseband chip can communicate with each other, so that a request for adjusting a voltage and a feedback process can be implemented.

Further, in an embodiment of the present application, the baseband chip of the terminal device configuration may include at least one subsystem, wherein the at least one subsystem may perform tasks respectively under the same voltage domain. The baseband chip configured for the terminal device may further include a DVFS management system, wherein the DVFS management system may communicate with the at least one subsystem, respectively.

In the embodiment of the present application, the DVFS management system may be composed of several parts, namely, a sensing unit, a decision unit, a high-speed data interface, and a voltage regulation control unit. The sensing unit can be used for acquiring expected voltage of each subsystem in at least one system, the decision unit can be used for determining final target voltage according to the expected voltage of each subsystem, the voltage regulation control part can pack the target voltage according to a well-agreed format and then send the target voltage to the high-speed data interface, and the high-speed data interface can further send the target voltage to the power management module.

It should be noted that, in the embodiment of the present application, the first subsystem may be any one of the at least one subsystem, that is, each time a desired voltage of any one of the at least one subsystem is updated in a next adjustment period, the terminal device may execute a process of determining whether to adjust the voltage in response to the update of the desired voltage.

It is understood that in embodiments of the present application, the expected voltage of the first subsystem in the next regulation cycle may predict the voltage required by the first subsystem in the next regulation cycle. The expected voltage of the first subsystem in the next regulation period can be used for predicting the voltage required by the first subsystem when the first subsystem executes a task, and can also be used for predicting the voltage required by the first subsystem when the first subsystem is in a low power consumption mode after the first subsystem executes the task.

That is, in the embodiment of the present application, regardless of whether the first subsystem is in an operating state to perform a task, as long as the voltage demanded by the first subsystem is changed, a desired voltage in the next regulation period can be generated.

Further, in the embodiment of the present application, after acquiring the expected voltage of the first subsystem in the next adjustment period, the DVFS management system may determine whether the voltage adjustment condition is satisfied according to the expected voltage and the current system voltage. Specifically, the DVFS management system may compare an expected voltage of the first subsystem in a next adjustment period with a current system voltage to obtain a comparison result, so as to further determine whether the voltage adjustment condition is satisfied according to the comparison result.

It should be noted that, in the embodiment of the present application, after comparing the expected voltage of the first subsystem in the next regulation period with the current system voltage, if the comparison result is that the expected voltage is greater than the current system voltage, it may be considered that the regulation processing of the boost voltage needs to be performed, and then the DVFS management system may determine that the voltage regulation condition is satisfied.

It should be noted that, in the embodiment of the present application, after comparing the expected voltage of the first subsystem in the next regulation period with the current system voltage, if the comparison result is that the expected voltage is equal to the current system voltage, it may be considered that the voltage regulation process is not required, and then the DVFS management system may determine that the voltage regulation condition is satisfied.

It should be noted that, in the embodiment of the present application, after comparing the expected voltage of the first subsystem in the next adjustment period with the current system voltage, if the comparison result shows that the expected voltage is smaller than the current system voltage, the DVFS management system may consider that the adjustment processing for reducing the voltage needs to be performed, however, the DVFS management system needs to take account of the voltage adjustment requirements of other subsystems besides the first subsystem, so the DVFS management system needs to update the expected voltage list according to the expected voltage, and then further determine whether the voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage.

And 102, if the voltage regulation condition is judged to be met, the DVFS management system determines a target voltage and generates a voltage regulation request according to the target voltage.

In the embodiment of the application, when the expected voltage of the first subsystem in the next adjustment period is acquired, after the DVFS management system judges whether the voltage adjustment condition is satisfied according to the expected voltage and the current system voltage, if the voltage adjustment condition is determined to be satisfied, the DVFS management system may further determine a target voltage for performing voltage adjustment processing, and then generate a voltage adjustment request according to the target voltage.

Further, in the embodiment of the present application, when the DVFS management system determines the target voltage, if the desired voltage is greater than the current system voltage, the DVFS management system needs to perform adjustment processing of the boost voltage at this time, and accordingly, the DVFS management system may directly determine the desired voltage as the target voltage.

Further, in the embodiment of the present application, when the DVFS management system determines the target voltage, if the expected voltage is smaller than the current system voltage, the DVFS management system needs to perform adjustment processing of reducing the voltage at this time, and accordingly, the DVFS management system may determine the maximum voltage in the expected voltage list as the target voltage.

It should be noted that, in the embodiment of the present application, when the DVFS management system generates the voltage adjustment request according to the target voltage, the DVFS management system may select to perform a packing process on the target voltage according to a preset compression format, so as to generate the corresponding voltage adjustment request.

Step 103, the DVFS management system sends a voltage adjustment request to the power management module to complete the voltage adjustment process.

In an embodiment of the present application, if it is determined that the voltage adjustment condition is satisfied, the DVFS management system may send a voltage adjustment request to the power management module by the DVFS management system after determining the target voltage and generating the voltage adjustment request according to the target voltage, so that the power management module may complete the voltage adjustment process based on the voltage adjustment request.

It is understood that, in the embodiment of the present application, when sending the voltage adjustment request to the power management module, the DVFS management system may choose to send the voltage adjustment request to the power management module according to a preset interface format.

Further, in embodiments of the present application, the DVFS management system may be configured with a voltage regulation control unit and a high speed data interface, where the voltage regulation control unit and the high speed data interface may be used for generation and transmission of the voltage regulation request.

It should be noted that, in the embodiment of the present application, when the DVFS management system generates the voltage adjustment request according to the target voltage, the voltage regulation control unit may select to firstly perform a packing process on the target voltage according to a preset compression format to generate the voltage adjustment request, and then transmit the voltage adjustment request to the high-speed data interface, and then the high-speed data interface may send the voltage adjustment request to the power management module according to the preset interface format.

Further, in the embodiment of the present application, after receiving a voltage adjustment request sent by a baseband chip, a power management module in a terminal device may determine a corresponding target voltage based on the voltage adjustment request, and then perform voltage adjustment processing according to the target voltage. Specifically, the power management module may control the real-time output voltage according to the target voltage.

In an embodiment of the present application, fig. 7 is a schematic diagram of an implementation flow of a voltage adjustment method, and as shown in fig. 7, a method for a DVFS management system in a baseband chip of a terminal device to determine whether a voltage adjustment condition is satisfied according to an expected voltage and a current system voltage may include the following steps:

step 201, if the expected voltage is greater than the current system voltage, the DVFS management system determines that the voltage adjustment condition is satisfied.

In an embodiment of the application, after acquiring an expected voltage of the first subsystem in a next adjustment period, the DVFS management system may compare the expected voltage with a current system voltage, and if the comparison result is that the expected voltage is greater than the current system voltage, the DVFS management system may determine that a voltage adjustment condition is satisfied, and then continue to execute a voltage adjustment processing flow.

It can be understood that, in the embodiment of the present application, if the expected voltage notified by the first subsystem is greater than the current system voltage, it may be determined that the first subsystem needs a higher voltage when performing a task, and therefore, an adjustment process for boosting the voltage is required, and it may be determined that the voltage adjustment condition is satisfied. For example, the desired voltage notified by the first subsystem is 0.8V, and the current system voltage is 0.6V, that is, it can be determined that the voltage regulation condition is satisfied.

That is, in the embodiment of the present application, when the acquired desired voltage of any one of the subsystems is greater than the current system voltage, it may be determined that the voltage adjustment process is required.

Further, in an embodiment of the present application, the method for the DVFS management system in the baseband chip of the terminal device to determine whether the voltage adjustment condition is satisfied according to the expected voltage and the current system voltage may further include the following steps:

step 202, if the desired voltage is equal to the current system voltage, the DVFS management system determines that the voltage adjustment condition is not satisfied.

In an embodiment of the present application, after acquiring the expected voltage of the first subsystem in the next adjustment period, the DVFS management system may compare the expected voltage with the current system voltage, and if the comparison result is that the expected voltage is equal to the current system voltage, the DVFS management system may determine that the voltage adjustment condition is not satisfied, and further, a processing flow of performing voltage adjustment is not needed.

It is understood that, in the embodiment of the present application, if the desired voltage notified by the first subsystem is equal to the current system voltage, it may be determined that the current system voltage may satisfy the voltage required by the first subsystem when performing the task, and therefore, the voltage adjustment process is not required, and it may be determined that the voltage adjustment condition is not satisfied. For example, the desired voltage notified by the first subsystem is 0.6V, and the current system voltage is 0.6V, i.e., it can be determined that the voltage adjustment condition is not satisfied.

That is, in the embodiment of the present application, when the acquired desired voltage of any one of the subsystems is equal to the current system voltage, it may be determined that the voltage adjustment process is not necessary.

step 203, if the expected voltage is smaller than the current system voltage, the DVFS management system updates the expected voltage list according to the expected voltage, and determines whether a voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage.

In an embodiment of the application, after acquiring an expected voltage of the first subsystem in a next adjustment period, the DVFS management system may compare the expected voltage with a current system voltage, and if the comparison result indicates that the expected voltage is smaller than the current system voltage, the DVFS management system may update an expected voltage list according to the expected voltage, and then further determine whether a voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage.

It is understood that, in the embodiment of the present application, if the expected voltage notified by the first subsystem is less than the current system voltage, it may be considered that the adjustment process for reducing the voltage needs to be performed, however, the DVFS management system needs to take into account the voltage adjustment requirements of other subsystems besides the first subsystem, so the DVFS management system needs to update the expected voltage list according to the expected voltage, and then perform the determination process whether the voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage. For example, the expected voltage notified by the first subsystem is 0.6V, and the current system voltage is 0.7V, at this time, the DVFS management system cannot directly determine whether the voltage adjustment condition is satisfied according to the expected voltage, but needs to update the expected voltage list by using the expected voltage, and then determine whether the voltage adjustment condition is satisfied by combining the expected voltage list and the current system voltage.

That is to say, in the embodiment of the present application, when the acquired expected voltage of any one subsystem is smaller than the current system voltage, the DVFS management system cannot directly determine whether the voltage adjustment process needs to be performed, but performs the update process on the expected voltage list first, and then performs the further determination process by using the updated expected voltage list.

It should be noted that, in the embodiment of the present application, the expected voltage list is used to perform real-time statistics on the expected voltages of all subsystems. Specifically, the expected voltage list records the expected voltage of each subsystem in the baseband chip in the next adjustment period, and after any one of all the subsystems notifies the DVFS management system of the expected voltage, the DVFS management system may update the expected voltage list using the newly obtained expected voltage of the subsystem. For example, table 2 shows a first expected voltage list, table 3 shows a second expected voltage list, where at time t1, the DVFS management system acquires that the expected voltages of the subsystems 1, 2, and 3 in the next adjustment period are 0.6V, 0.7V, and 0.8V, respectively, and updates the expected voltage list as shown in table 2, and at time t2 (t2> t1), the DVFS management system acquires that the expected voltages of the subsystems 1 and 3 in the next adjustment period are 0.5V and 0.7V, respectively, and may update the expected voltage list as shown in table 3.

TABLE 2

	Voltage (V)
		Subsystem 1	0·6
Subsystem 2	0·7
		Subsystem 3	0·8

TABLE 3

Further, in the embodiment of the present application, when determining whether the voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage, the DVFS management system may first determine a maximum voltage in the expected voltage list, then compare the maximum voltage with the current system voltage to obtain a comparison result, and then may determine whether the voltage adjustment condition is satisfied according to the comparison result.

It is to be understood that, in the embodiment of the present application, after comparing the maximum voltage in the expected voltage list with the current system voltage, if the comparison result is that the maximum voltage in the expected voltage list is equal to the current system voltage, it may be considered that the maximum voltage in the voltages required by all the subsystems cannot be lower than the current system voltage, and thus it can be determined that the voltage adjustment condition is not satisfied, that is, the DVFS management system may determine that the voltage adjustment condition is not satisfied.

It is understood that, in the embodiment of the present application, after comparing the maximum voltage in the expected voltage list with the current system voltage, if the comparison result is that the maximum voltage in the expected voltage list is smaller than the current system voltage, it may be considered that the voltages required by all subsystems are lower than the current system voltage, and therefore it can be determined that the voltage adjustment condition is satisfied, that is, the DVFS management system may determine that the voltage adjustment condition is satisfied.

Further, in the embodiment of the present application, when the DVFS management system determines the target voltage, if the desired voltage is smaller than the current system voltage, an adjustment process for reducing the voltage is required at this time, and accordingly, the DVFS management system may determine the maximum voltage as the target voltage. The embodiment of the application provides a voltage adjusting method, which is applied to terminal equipment, wherein the terminal equipment is provided with a baseband chip and a power management module, the baseband chip comprises at least one subsystem and a DVFS (dynamic voltage scaling) management system, and each subsystem is respectively used for calculating expected voltage in the next adjusting period; the DVFS management system is used for sending a voltage adjustment request to the power management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period. That is to say, in the embodiment of the present application, the DVFS management system configured in the baseband chip of the terminal device may respond to the voltage adjustment requirement of the subsystem in time by acquiring the expected voltage of the subsystem, so as to shorten the sensing decision time of the voltage adjustment, and at the same time, may further shorten the transmission time and the adjustment time of the voltage adjustment by using the high-speed data interface and the fast-response power management module, thereby effectively shortening the processing time of the voltage adjustment, reducing the power consumption of the system, and simultaneously implementing the fine control of the voltage adjustment processing.

Based on the foregoing embodiment, a further embodiment of the present application provides a voltage adjustment method, where the voltage adjustment method is applied to a terminal device, and the terminal device may include a power management module, a radio frequency module, and a baseband chip, and the power management module may respectively supply power to the radio frequency module and the baseband chip.

In an embodiment of the present application, fig. 8 is a schematic view of a composition structure of a terminal device, and as shown in fig. 8, the terminal device may include a power management module, a radio frequency module, and a baseband chip, and the power management module may respectively supply power to the radio frequency module and the baseband chip. The baseband chip can comprise at least one subsystem, and the at least one subsystem can work in the same voltage domain; the baseband chip may further include a DVFS management system, which may be used to perform voltage scaling processing.

Further, in an embodiment of the present application, the baseband chip in the terminal device may include at least one subsystem and a DVFS management system. Wherein at least one subsystem can work under the same voltage domain; the DVFS management system may be used to perform a voltage adjustment process.

Fig. 9 is a schematic diagram of a baseband chip, and as shown in fig. 9, the baseband chip includes n subsystems (n is greater than or equal to 1) in the same voltage domain and a DVFS management system. Specifically, the DVFS management system comprises a sensing unit, a decision unit, a voltage regulation control unit and a high-speed data interface.

It should be noted that, in the embodiment of the present application, in the same voltage domain, each subsystem may decompose and confirm its respective subtask and its corresponding frequency requirement after a period of time in the future according to its current working state and task, and further may determine the corresponding voltage requirement, and finally may vote for its respective expected voltage value, i.e. the expected voltage, after a period of time. For example, table 4 shows the expected voltages predicted by a subsystem during different subtasks, specifically, after the subsystem receives a task packet, it can decompose 7 subtasks, and for each subtask, the subsystem can predict the frequency required for executing the subtask, so as to determine the expected voltage in the next adjustment period, as shown in table 4.

Further, in the embodiment of the present application, before a certain subtask starts, the subsystem will inform the sensing and decision unit of the desired voltage in the next adjustment period in a voting manner to apply for the desired voltage required by the sensing and decision unit. After one subtask ends and before the next subtask begins, the subsystem may choose to enter a predefined low power consumption mode, at which point the sensing and decision unit may be notified to apply for the desired voltage of the low power consumption mode in the next adjustment period.

TABLE 4

	Voltage (V)
		Subtask 1	0.6
Subtask 2	0.7
		Subtask 3	0.8
Subtask 4	0.7
		Subtask 5	0.5
Subtask 6	0.7
		Subtask 7	0.5

Further, in the embodiment of the present application, the sensing unit is responsible for collecting the expected voltage voted by each subsystem in a certain voltage domain (current system voltage), so that the decision unit may determine whether to perform the voltage adjustment process according to the obtained expected voltage of the subsystem, and determine the corresponding target voltage after determining to perform the voltage adjustment process.

That is to say, in the embodiment of the present application, when there is a change in an expected voltage required by one or more subsystems, the subsystems may notify a sensing unit in the DVFS management system in a voting manner, and after the sensing unit obtains a new expected voltage, the sensing unit may transmit the expected voltage to a decision unit, and then the decision unit performs a determination process on whether to adjust the voltage according to the expected voltage.

Further, in an embodiment of the present application, fig. 10 is a schematic view of an implementation flow of a voltage adjustment method, and as shown in fig. 10, the method for adjusting the voltage by the terminal device may further include the following steps:

step 301, obtaining a desired voltage of the first subsystem.

In an embodiment of the present application, the sensing unit in the DVFS management system may obtain a desired voltage of the first subsystem in a next adjustment period. The first subsystem may be any subsystem of at least one subsystem in the baseband chip. Specifically, whenever the desired voltage of any one of the at least one subsystem is updated in the next regulation period, the DVFS management system may be notified of the desired voltage by voting.

Step 302, judging whether the expected voltage is the same as the current system voltage, if so, executing step 303, otherwise, executing step 304.

Step 303, the voltage adjustment process is not performed.

In an embodiment of the present application, after acquiring the expected voltage of the first subsystem in the next adjustment period, the DVFS management system may determine whether the voltage adjustment condition is satisfied according to the expected voltage and the current system voltage. Specifically, the decision unit in the DVFS management system may first determine whether the expected voltage is the same as the current system voltage, and if so, may determine that the voltage adjustment process is not required.

And step 304, judging whether the expected voltage is larger than the current system voltage, if so, executing step 305, otherwise, executing step 306.

In an embodiment of the present application, after comparing the expected voltage of the first subsystem in the next adjustment period with the current system voltage, if the comparison result is that the expected voltage is greater than the current system voltage, it may be considered that adjustment processing of the boosted voltage needs to be performed, and then the DVFS management system may determine that the voltage adjustment condition is satisfied.

Step 305, perform the adjustment process of the boosted voltage.

Step 306, update the expected voltage list according to the expected voltage.

In the embodiment of the present application, after comparing the expected voltage of the first subsystem in the next adjustment period with the current system voltage, if the comparison result shows that the expected voltage is smaller than the current system voltage, the DVFS management system may determine that adjustment processing for reducing the voltage is required, however, the DVFS management system also needs to take into account voltage adjustment requirements of other subsystems besides the first subsystem, so the DVFS management system also needs to update the expected voltage list according to the expected voltage, and then further determine whether the voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage.

It should be noted that, in the embodiment of the present application, the expected voltage list is used to perform real-time statistics on the expected voltages of all subsystems. Specifically, the expected voltage list records the expected voltage of each subsystem in the baseband chip in the next adjustment period, and after any one of all the subsystems notifies the DVFS management system of the expected voltage, the DVFS management system may update the expected voltage list using the newly obtained expected voltage of the subsystem.

Step 307, whether the maximum voltage in the expected voltage list is less than the current system voltage, if yes, step 308 is executed, otherwise step 303 is executed.

Step 308, perform the adjustment process of the reduced voltage.

In the embodiment of the application, after the DVFS management system updates the expected voltage list according to the expected voltage, when the DVFS management system judges whether the voltage adjustment condition is satisfied based on the expected voltage list and the current system voltage, the DVFS management system may first determine a maximum voltage in the expected voltage list, then compare the maximum voltage with the current system voltage, and if the comparison result is that the maximum voltage in the expected voltage list is equal to the current system voltage, it may be considered that the maximum voltage in the voltages required by all the subsystems cannot be lower than the current system voltage, so that it may be determined that the voltage adjustment condition is not satisfied, that is, the DVFS management system may determine that the voltage adjustment condition is not satisfied; if the comparison result is that the maximum voltage in the expected voltage list is smaller than the current system voltage, it can be considered that the voltages required by all the subsystems are lower than the current system voltage, and therefore it can be determined that the voltage regulation condition is satisfied, that is, the DVFS management system can determine that the voltage regulation condition is satisfied.

As can be seen, in the embodiments of the present application, the voltage adjustment condition may include an adjustment condition of a boosting voltage and an adjustment condition of a decreasing voltage. Specifically, when determining whether the voltage adjustment condition is satisfied, if the expected voltage of one subsystem is greater than the current system voltage, it may be directly determined that the adjustment condition for boosting the voltage is satisfied; however, if the expected voltage of one subsystem is smaller than the current system voltage, it cannot be directly determined that the adjustment condition for lowering the voltage is satisfied, but the voltage adjustment requirements of other subsystems need to be considered based on the expected voltage list, and then it is further determined whether the adjustment process for lowering the voltage can be performed.

It can be understood that, in the embodiment of the present application, the DVFS management system mainly depends on the magnitude relationship between the maximum voltage in the updated expected voltage list and the current system voltage when determining whether the adjustment condition for reducing the voltage is satisfied. For example, table 5 is the expected voltage list before updating, table 6 is the expected voltage list one after updating, and table 7 is the expected voltage list two after updating.

TABLE 5

Assuming that the current system voltage is 0.8V, based on table 6, if the expected voltage required by the subsystem 3 is updated from 0.8V to 0.7V, at this time, the maximum voltage in the updated expected voltage list is 0.7V, and it is seen that the maximum voltage is less than the current system voltage of 0.8V, so that it can be determined that the voltage adjustment condition is satisfied, the adjustment process of decreasing the voltage can be performed, and the voltage decrease amplitude is 0.1V.

TABLE 6

	Voltage (V)
		Subsystem 1	0.6
Subsystem 2	0.7
		Subsystem 3	0.7
Subsystem 4	0.7

Assuming that the current system voltage is 0.8V, based on table 7, if the expected voltage required by the subsystem 4 is updated from 0.7V to 0.6V, at this time, the maximum voltage in the updated expected voltage list is still 0.8V, and it is seen that the maximum voltage is equal to the current system voltage of 0.8V, so that it can be determined that the voltage adjustment condition is not satisfied, and the adjustment process for reducing the voltage may not be performed.

TABLE 7

	Voltage (V)
		Subsystem 1	0.6
Subsystem 2	0.7
		Subsystem 3	0.8
Subsystem 4	0.6

Further, in an embodiment of the present application, fig. 11 is a schematic diagram of an implementation flow of a voltage adjustment method, and as shown in fig. 11, the method for adjusting the voltage by the terminal device may further include the following steps:

step 301, obtaining a desired voltage of the first subsystem.

Step 306, update the expected voltage list according to the expected voltage.

Step 309, determine the maximum voltage in the list of expected voltages.

Step 310, determining whether the maximum voltage is equal to the current system voltage, if yes, executing step 303, otherwise executing step 311.

Step 303, the voltage adjustment process is not performed.

Step 311, determine the maximum voltage as the target voltage.

Step 312, perform a voltage adjustment process according to the target voltage.

In an embodiment of the present application, after acquiring the expected voltage of the first subsystem in the next adjustment period, the DVFS management system may update the expected voltage list according to the expected voltage, and then determine the maximum voltage in the updated expected voltage list, where the maximum voltage may determine the maximum value of all the expected voltages required by all the subsystems.

Further, in an embodiment of the present application, the DVFS management system may compare the maximum voltage in the expected voltage list with the current system voltage to obtain a comparison result, and then may determine whether the voltage adjustment condition is satisfied according to the comparison result.

It can be understood that, in the embodiment of the present application, after comparing the maximum voltage in the expected voltage list with the current system voltage, if the comparison result shows that the maximum voltage in the expected voltage list is smaller than the current system voltage, it may be considered that the voltages required by all subsystems are lower than the current system voltage, and therefore it can be determined that the voltage adjustment condition is satisfied, the adjustment processing of the boost voltage needs to be performed, and further, the maximum voltage may be determined as the target voltage for performing the voltage adjustment processing.

It is understood that, in the embodiment of the present application, after comparing the maximum voltage in the expected voltage list with the current system voltage, if the comparison result shows that the maximum voltage in the expected voltage list is greater than the current system voltage, the DVFS management system may consider that the maximum voltage in the voltages required by all the subsystems is greater than the current system voltage, and therefore, it may be determined that the voltage adjustment condition is satisfied, an adjustment process for reducing the voltage is required, and the maximum voltage may be determined as a target voltage for performing the voltage adjustment process.

As can be seen, in the embodiments of the present application, the voltage adjustment condition may include an adjustment condition of a boosting voltage and an adjustment condition of a decreasing voltage. Specifically, when determining whether the voltage adjustment condition is satisfied, the expected voltage list may be updated based on the expected voltage of the subsystem, and then the maximum voltage in the expected voltage list is determined, and then it may be determined that the adjustment condition of the boost voltage is satisfied by comparing the maximum voltage with the current system voltage.

It can be understood that, in the embodiment of the present application, the DVFS management system mainly depends on a size relationship between the maximum voltage in the updated expected voltage list and the current system voltage when determining whether the adjustment condition of boosting the voltage or lowering the voltage is satisfied. For example, based on table 5 above, table 8 is a third updated desired voltage list.

TABLE 8

	Voltage (V)
		Subsystem 1	0.8
Subsystem 2	0.7
		Subsystem 3	0.7
Subsystem 4	0.7

Assuming that the current system voltage is 0.8V, based on table 8, if the expected voltage required by the subsystem 1 is updated from 0.6V to 0.9V, and at the same time, the expected voltage required by the subsystem 3 is updated from 0.8V to 0.7V, at this time, the maximum voltage in the updated expected voltage list is 0.9V, it is seen that the maximum voltage is greater than the current system voltage by 0.8V, and therefore it can be determined that the voltage adjustment condition is satisfied, the adjustment process of the boost voltage can be performed, and the boost amplitude is 0.1V.

Further, in the embodiment of the present application, after a decision unit in the DVFS Management System decides that adjustment processing requiring boosting or reducing is to be performed, and immediately calculates a target voltage, the target voltage may be transmitted to the voltage-regulating control unit, the voltage-regulating control unit generates a voltage-regulating request after packaging the target voltage according to a predetermined format (a predetermined compression format), and transmits the voltage-regulating request to the high-speed data Interface, and the high-speed data Interface may transmit the voltage-regulating request to the Power Management module according to a physical Interface format (a predetermined Interface format) such as a System Power Management Interface (SPMI).

Further, in the embodiment of the present application, after the power management module receives the voltage adjustment request from the high-speed communication interface, the power management module may parse the voltage adjustment request to obtain the target voltage, and then may perform the voltage adjustment process according to the target voltage.

It should be noted that, in the embodiment of the present application, fig. 12 is a schematic diagram of a power management module, and as shown in fig. 12, the power management module 20 may include several parts, such as a high-speed communication interface 21, a control register 22, and a direct current converter (DCDC) 23. Wherein the high-speed communication interface 21 may be configured to receive the voltage adjustment request; the control register 22 may be used to control the DCDC circuit to output the target voltage based on the voltage value of the target voltage indicated by the voltage adjustment request.

It can be understood that, in the embodiment of the present application, after receiving the voltage adjustment request, the high-speed communication interface in the power management module may interpret and convert the target voltage to obtain the DCDC voltage, and then control the DCDC output by adjusting the control register. Specifically, DCDC can make voltage adjustments at a rate of typically 20mV/us, which would take 5us if adjusted at 100 mV/us.

In summary, the voltage adjustment method provided by the embodiment of the application can timely acquire the voltage requirement of the subsystem through the voting mode of the subsystem, thereby greatly shortening the sensing time and the decision time in the process of executing the voltage adjustment processing.

It can be understood that, in the embodiment of the present application, fig. 13 is a schematic diagram of a voltage adjustment process, and as shown in fig. 13, taking a boost voltage input adjustment process as an example, the whole voltage adjustment process from V1 to V2 may mainly include a sensing decision stage, a transmission stage, an interpretation stage and a voltage ramp-up stage, where a sensing decision time corresponding to the sensing decision stage is T1, a transmission time corresponding to the transmission stage is T2, an interpretation time corresponding to the interpretation stage is T3, and a voltage ramp-up time corresponding to the voltage ramp-up stage is T4. Based on the voltage adjustment method provided by the embodiment of the application, the process of sensing decision is mainly realized in a hardware mode, and the calculated amount of a software part is small, so that the process can be finished in about 1us, namely T1 is 1 us; in the transmission stage, it is assumed that SPMI transmission at 26Mbps is adopted, the overall length of the message including the address and the like is 32 bits, and the transmission time is 1.23us, i.e., T2 is 1.23 us; in the reading stage, a message management module special for the power management module reads the message and directly controls a relevant power register, and the time is 1us, namely T3 is 1 us; in the voltage ramp phase, the power management module controls the DCDC voltage to ramp up, and if the voltage ramp rate is 20mv/us, and Δ V is V2-V1 is 100mv, 5us is consumed, i.e., T4 is 5 us.

It should be noted that, in the embodiment of the present application, the link delay mainly consists of the transmission time T2 of the high-speed communication interface, the message interpretation time T3 of the power management module, and the voltage ramp time T4 of the DCDC power supplyT4 may be determined by a voltage ramp rate R (e.g., R ═ 20mv/us) and an adjustment voltage difference Δ V (mv), i.e., T4 ═ Δ V/R. Whole link delay T_delay＝T2+T3+T4。

As can be seen, the sensing decision time T1 is 1us, the transmission time T2 is 1.23us, the power management module interprets the time T3 is 1us, and the voltage ramp time T4 is 5us, so that the total time is 8.23us, wherein after the sensing decision is completed, it is required to wait for T3878 to be 1us_delayThe voltage can be adjusted to the target voltage at 7.23 us.

It is understood that, in the embodiment of the present application, if the voltage adjustment is the adjustment processing flow of the boosted voltage, T is set here_delayDuring the period, the subsystem must wait until the DVFS management system senses that the adjustment processing path of the boosted voltage is finished and informs the subsystem that the voltage adjustment is finished, and the subsystem can start the work after the frequency boosting; if the voltage is adjusted to be the adjustment processing flow of reducing the voltage, the subsystem can directly reduce the frequency and then send the voltage reduction request without waiting, and the whole system can directly reduce the voltage without waiting after meeting the voltage reduction condition.

The embodiment of the application provides a voltage adjusting method, which is applied to terminal equipment, wherein the terminal equipment is provided with a baseband chip and a power management module, the baseband chip comprises at least one subsystem and a DVFS (dynamic voltage scaling) management system, and each subsystem is respectively used for calculating expected voltage in the next adjusting period; the DVFS management system is used for sending a voltage adjustment request to the power supply management module; the voltage regulation request is used for indicating a target voltage output to the baseband chip by the power management module in the next regulation period, and the target voltage is not less than the expected voltage of each subsystem in the next regulation period. That is to say, in the embodiment of the present application, the DVFS management system configured in the baseband chip of the terminal device may respond to the voltage adjustment requirement of the subsystem in time by acquiring the expected voltage of the subsystem, so as to shorten the sensing decision time of the voltage adjustment, and at the same time, may further shorten the transmission time and the adjustment time of the voltage adjustment by using the high-speed data interface and the fast-response power management module, thereby effectively shortening the processing time of the voltage adjustment, reducing the power consumption of the system, and simultaneously implementing the fine control of the voltage adjustment processing.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks in the flowchart and/or block diagram block or blocks.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims

1. A baseband chip comprising at least one subsystem and a DVFS management system, wherein,

2. The baseband chip according to claim 1,

the DVFS management system is specifically configured to obtain an expected voltage of each subsystem in a next adjustment cycle; and determining the target voltage according to the expected voltage of each subsystem in the next adjustment period.

3. The baseband chip according to claim 2, wherein the DVFS management system includes a sensing unit and a decision unit, wherein,

the sensing unit is used for acquiring the expected voltage of each subsystem in the next adjustment period;

and the decision unit is used for determining the target voltage according to the expected voltage of each subsystem in the next adjustment period.

4. The baseband chip according to claim 1, wherein the DVFS management system includes a voltage regulation control unit and a high speed data interface, wherein,

the voltage regulation control unit is used for generating the voltage regulation request according to the voltage value of the target voltage;

and the high-speed data interface is used for sending the voltage adjustment request to the power management module.

5. The baseband chip according to claim 1,

the DVFS management system is further configured to determine whether a voltage adjustment condition is satisfied according to an expected voltage of each subsystem in a next adjustment period and a current system voltage.

6. The baseband chip according to claim 5,

the DVFS management system is specifically configured to determine that one subsystem satisfies a voltage regulation condition if an expected voltage of the one subsystem in a next regulation period is greater than the current system voltage.

7. The baseband chip according to claim 5,

the DVFS management system is specifically configured to, if an expected voltage of one subsystem in a next adjustment period is smaller than the current system voltage, determine whether a voltage adjustment condition is satisfied according to an expected voltage of another subsystem in a next adjustment period and the current system voltage.

8. The baseband chip according to claim 7,

the DVFS management system is specifically configured to determine that the one subsystem satisfies a voltage regulation condition if a maximum voltage of expected voltages of the other subsystems in a next regulation period is smaller than the current system voltage.

9. The baseband chip according to claim 6,

the DVFS management system is specifically configured to determine the desired voltage as the target voltage.

10. The baseband chip according to claim 8,

the DVFS management system is specifically configured to determine the maximum voltage as the target voltage.

11. The baseband chip according to claim 4,

the voltage regulation control unit is specifically used for packaging the target voltage according to a preset compression format to generate the voltage regulation request;

the high-speed data interface is specifically configured to send the voltage adjustment request to the power management module according to a preset interface format.

12. The baseband chip according to claim 1,

each subsystem is specifically used for decomposing a current task and determining a subtask corresponding to the current task; the desired voltage in the next adjustment period is determined from the subtasks.

13. A voltage regulation method is applied to a terminal device, the terminal device is provided with a baseband chip and a power management module, the power management module is used for supplying power to the baseband chip, the baseband chip comprises at least one subsystem and a DVFS management system, and the method comprises the following steps:

each subsystem calculates the desired voltage in the next regulation cycle;

14. The method of claim 13,

the DVFS management system acquires the expected voltage of each subsystem in the next regulation period; and determining the target voltage according to the expected voltage of each subsystem in the next adjustment period.

15. The method of claim 14, wherein the DVFS management system comprises a perception unit and a decision unit, wherein,

the sensing unit acquires the expected voltage of each subsystem in the next adjustment period;

and the decision unit determines the target voltage according to the expected voltage of each subsystem in the next adjustment period.

16. The method of claim 13, wherein the DVFS management system includes a voltage regulation control unit and a high speed data interface, and wherein sending a voltage regulation request to the power management module comprises:

the voltage regulation control unit generates the voltage regulation request according to the voltage value of the target voltage;

the high-speed data interface sends the voltage adjustment request to the power management module.

17. The method of claim 14, further comprising:

and the DVFS management system judges whether a voltage regulation condition is met according to the expected voltage of each subsystem in the next regulation period and the current system voltage.

18. The method of claim 17,

and if the expected voltage of one subsystem in the next regulation period is greater than the current system voltage, the DVFS management system judges that the one subsystem meets the voltage regulation condition.

19. The method of claim 17,

and if the expected voltage of one subsystem in the next adjustment period is smaller than the current system voltage, the DVFS management system judges whether the voltage adjustment condition is met according to the expected voltages of other subsystems in the next adjustment period and the current system voltage.

20. The method of claim 19,

and if the maximum voltage of the expected voltages of other subsystems in the next regulation period is smaller than the current system voltage, the DVFS management system judges that the subsystem meets the voltage regulation condition.

21. The method of claim 18, wherein the DVFS management system determining the target voltage based on a desired voltage of each subsystem in a next adjustment cycle comprises:

the DVFS management system determines the desired voltage as the target voltage.

22. The method of claim 19, wherein the DVFS management system determining the target voltage based on a desired voltage of the each subsystem in a next adjustment cycle comprises:

the DVFS management system determines the maximum voltage as the target voltage.

23. The method of claim 16, wherein the voltage regulation control unit generating the voltage regulation request according to the voltage value of the target voltage comprises:

and the voltage regulating control unit packs the target voltage according to a preset compression format to generate the voltage regulating request.

24. The method of claim 16, wherein the high-speed data interface sends the voltage adjustment request to the power management module, comprising:

and the high-speed data interface sends the voltage adjustment request to the power management module according to a preset interface format.

25. The method of claim 13, wherein each subsystem calculates a desired voltage in a next regulation cycle, comprising:

each subsystem carries out decomposition processing on a current task and determines a subtask corresponding to the current task; the desired voltage in the next adjustment period is determined from the subtasks.

26. A terminal device, characterized in that the terminal device comprises: a power management module and a baseband chip according to claims 1 to 12, the power management module being configured to supply power to the baseband chip.

27. The terminal device of claim 26, wherein the power management module comprises a high-speed communication interface, a control register, and a dc-dc DCDC circuit;

the high-speed communication interface is used for receiving the voltage adjustment request;

the control register is used for controlling the DCDC circuit to output the target voltage based on the voltage value of the target voltage indicated by the voltage adjustment request.