From e0e93d03efa1c53012cc609fd48112df3e06da69 Mon Sep 17 00:00:00 2001 From: Kenneth Feng Date: Fri, 20 Apr 2018 13:55:39 +0800 Subject: [PATCH] drm/amd/powerplay: add registry key to disable ACG For the dummy ACG fuses,need to disable ACG, otherwise corruption will be caused. Signed-off-by: Kenneth Feng Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c | 5 +++++ drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c index 7fa1ba8..888ddca 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c @@ -224,6 +224,11 @@ static int append_vbios_pptable(struct pp_hwmgr *hwmgr, PPTable_t *ppsmc_pptable ppsmc_pptable->AcgGfxclkSpreadPercent = smc_dpm_table.acggfxclkspreadpercent; ppsmc_pptable->AcgGfxclkSpreadFreq = smc_dpm_table.acggfxclkspreadfreq; + /* 0xFFFF will disable the ACG feature */ + if (!(hwmgr->feature_mask & PP_ACG_MASK)) { + ppsmc_pptable->AcgThresholdFreqHigh = 0xFFFF; + ppsmc_pptable->AcgThresholdFreqLow = 0xFFFF; + } return 0; } diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h index 9b3dd7d..2f203ec 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h @@ -82,6 +82,7 @@ enum PP_FEATURE_MASK { PP_SOCCLK_DPM_MASK = 0x1000, PP_DCEFCLK_DPM_MASK = 0x2000, PP_OVERDRIVE_MASK = 0x4000, + PP_ACG_MASK = 0x10000, }; enum PHM_BackEnd_Magic { -- 2.7.4