From: Kenneth Feng <kenneth.feng@xxxxxxx>
confirmed that IPH_MEM_POWER_CTRL_EN and RC_MEM_POWER_CTRL_EN
have to be set for SRAM LS/DS/SD
Signed-off-by: Kenneth Feng <kenneth.feng@xxxxxxx>
Reviewed-by: Likun Gao <Likun.Gao@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/nv.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index 5d1c2eba3412..081fde347dd4 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -889,6 +889,16 @@ static void nv_update_hdp_mem_power_gating(struct amdgpu_device *adev,
RC_MEM_POWER_DS_EN, enable);
}
+ /* confirmed that IPH_MEM_POWER_CTRL_EN and RC_MEM_POWER_CTRL_EN have to
+ * be set for SRAM LS/DS/SD */
+ if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | AMD_CG_SUPPORT_HDP_DS |
+ AMD_CG_SUPPORT_HDP_SD)) {
+ hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
+ IPH_MEM_POWER_CTRL_EN, 1);
+ hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL,
+ RC_MEM_POWER_CTRL_EN, 1);
+ }
+
WREG32_SOC15(HDP, 0, mmHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl);
/* restore IPH & RC clock override after clock/power mode changing */
--
2.25.4
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