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Merge "msm: kgsl: Toggle loop_en while disabling gx gdsc"

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This commit is contained in:
qctecmdr 2020-09-09 06:09:27 -07:00 • committed by Gerrit - the friendly Code Review server
commit c47731c62f
2 changed files with 18 additions and 0 deletions
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2
drivers/gpu/msm/a6xx_reg.h
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@ -1075,6 +1075,8 @@
#define A6XX_GPU_CC_GX_DOMAIN_MISC 0x24542
#define A6XX_GPU_CC_GX_DOMAIN_MISC3 0x24563
/* GPU CPR registers */
#define A6XX_GPU_CPR_FSM_CTL 0x26801
/* GPU RSC sequencer registers */
#define A6XX_GPU_RSCC_RSC_STATUS0_DRV0 0x00004

16
drivers/gpu/msm/adreno_a6xx_gmu.c
View file

@ -1702,11 +1702,27 @@ static void a6xx_gmu_pwrctrl_suspend(struct adreno_device *adreno_dev)
dev_err(&gmu->pdev->dev,
"suspend fail: gx enable %d\n", ret);
/*
* Toggle the loop_en bit, across disabling the gx gdsc,
* with a delay of 10 XO cycles before disabling gx
* gdsc. This is to prevent CPR measurements from
* failing.
*/
if (adreno_is_a660(adreno_dev)) {
gmu_core_regrmw(device, A6XX_GPU_CPR_FSM_CTL,
1, 0);
ndelay(520);
}
ret = regulator_disable(gmu->gx_gdsc);
if (ret)
dev_err(&gmu->pdev->dev,
"suspend fail: gx disable %d\n", ret);
if (adreno_is_a660(adreno_dev))
gmu_core_regrmw(device, A6XX_GPU_CPR_FSM_CTL,
1, 1);
if (a6xx_gmu_gx_is_on(device))
dev_err(&gmu->pdev->dev,
"gx is stuck on\n");