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From 2a6aa68c16354bfa6b7a2fa1ee253356ba695df1 Mon Sep 17 00:00:00 2001
From: Kenneth Feng <kenneth.feng@amd.com>
Date: Thu, 6 Dec 2018 11:56:14 +0800
Subject: [PATCH 0575/2940] drm/amdgpu/powerplay: Apply avfs cks-off voltages
on VI
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>
---
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(+)
diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h b/drivers/gpu/drm/amd/powerplay/inc/smu7_ppsmc.h
index 62f36ba2435b..c1a99dfe4913 100644
--- 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)
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
index 51892cc8f149..90c1215c6f5e 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
@@ -1998,6 +1998,12 @@ int polaris10_thermal_avfs_enable(struct pp_hwmgr *hwmgr)
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;
}
--
2.17.1
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