4.19-stable review patch. If anyone has any objections, please let me know.
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From: Kenneth Feng kenneth.feng@amd.com
commit cf4197ed5796234a53beb71228198c7d1e678947 upstream.
Instead of EVV cks-off voltages, avfs cks-off voltages can avoid the overshoot voltages when switching sclk.
Signed-off-by: Kenneth Feng kenneth.feng@amd.com Acked-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h | 2 ++ drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c | 6 ++++++ 2 files changed, 8 insertions(+)
--- a/drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h +++ b/drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h @@ -386,6 +386,8 @@ typedef uint16_t PPSMC_Result; #define PPSMC_MSG_AgmResetPsm ((uint16_t) 0x403) #define PPSMC_MSG_ReadVftCell ((uint16_t) 0x404)
+#define PPSMC_MSG_ApplyAvfsCksOffVoltage ((uint16_t) 0x415) + #define PPSMC_MSG_GFX_CU_PG_ENABLE ((uint16_t) 0x280) #define PPSMC_MSG_GFX_CU_PG_DISABLE ((uint16_t) 0x281) #define PPSMC_MSG_GetCurrPkgPwr ((uint16_t) 0x282) --- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c @@ -1984,6 +1984,12 @@ int polaris10_thermal_avfs_enable(struct
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_EnableAvfs);
+ /* Apply avfs cks-off voltages to avoid the overshoot + * when switching to the highest sclk frequency + */ + if (data->apply_avfs_cks_off_voltage) + smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ApplyAvfsCksOffVoltage); + return 0; }