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From 52286b9d1c7e8042645cea9840297986cfb12e5a Mon Sep 17 00:00:00 2001
From: Kenneth Feng <kenneth.feng@amd.com>
Date: Fri, 20 Apr 2018 13:55:39 +0800
Subject: [PATCH 4174/5725] drm/amd/powerplay: add registry key to disable ACG
For the dummy ACG fuses,need to disable ACG, otherwise
corruption will be caused.
Change-Id: Ic32b138720cada2de510cbda607c681ad409e748
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Kalyan Alle <kalyan.alle@amd.com>
---
drivers/gpu/drm/amd/powerplay/hwmgr/vega12_processpptables.c | 5 +++++
1 file changed, 5 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;
}
--
2.7.4
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