公开(公告)号：US20220137687A1

公开(公告)日：2022-05-05

申请号：US17085505

申请日：2020-10-30

Applicant: QUALCOMM INCORPORATED

Inventor： Christopher Kong Yee CHUN ,  Chandan AGARWALLA ,  Dipti Ranjan PAL ,  Kumar Kanti GHOSH ,  Matthew SEVERSON ,  Nilanjan BANERJEE ,  Joshua STUBBS

IPC: G06F1/26

Abstract: Dynamic power supply voltage adjustment in a computing device may involve two stages. In a first stage, a first method for adjusting a power supply voltage may be disabled. While the first method remains disabled, a request to adjust the power supply voltage from an initial value to a target value using a second method may be received. The second method may be initiated in response to the request if a time interval has elapsed since a previous request to adjust the power supply voltage. In a second stage, the first method may be enabled when it has been determined that the power supply voltage has reached the target value.

公开(公告)号：US20240281044A1

公开(公告)日：2024-08-22

申请号：US18507955

申请日：2023-11-13

Applicant: QUALCOMM Incorporated

Inventor： Ronald ALTON ,  Louis LOUIE ,  Chandan AGARWALLA

IPC: G06F1/26

CPC classification number: G06F1/26

Abstract: A method for power control includes receiving first power consumption data of a first compute device based on measurements of the first compute device, and receiving second power consumption data of a second compute device based on measurements of the second compute device. The method further includes receiving system power data to obtain a system power limitation. The method also includes calculating a power budget threshold for the first compute device and the second compute device based on the first power consumption data, the second power consumption data, and the system power limitation. The method includes controlling performance of the first compute device to operate within the power budget threshold, and controlling performance of the second compute device to operate within the power budget threshold.

公开(公告)号：US20210357502A1

公开(公告)日：2021-11-18

申请号：US16874538

申请日：2020-05-14

Applicant: QUALCOMM Incorporated

Inventor： Bharat Kumar RANGARAJAN ,  Dipti Ranjan PAL ,  Keith Alan BOWMAN ,  Srinivas TURAGA ,  Ateesh Deepankar DE ,  Shih-Hsin Jason HU ,  Chandan AGARWALLA

IPC: G06F21/55 ,  G06F1/26

Abstract: A method to prevent a malicious attack on CPU subsystem (CPUSS) hardware is described. The method includes auto-calibrating tunable delay elements of a dynamic variation monitor (DVM) using an auto-calibration value computed in response to each detected change of a clock frequency (Fclk)/supply voltage (Vdd) of the CPUSS hardware. The method also includes comparing the auto-calibration value with a threshold reference calibration value to determine whether the malicious attack is detected. The method further includes forcing a safe clock frequency (Fclk)/safe supply voltage (Vdd) to the CPUSS hardware when the malicious attack is detected.