[PATCH 5.10 31/47] amdgpu/pm: Prevent force of DCEFCLK on NAVI10 and SIENNA_CICHLID

From: Greg Kroah-Hartman
Date: Thu May 20 2021 - 05:29:46 EST


From: Darren Powell <darren.powell@xxxxxxx>

[ Upstream commit b117b3964f38a988cb79825950dbd607c02237f3 ]

Writing to dcefclk causes the gpu to become unresponsive, and requires a reboot.
Patch ignores a .force_clk_levels(SMU_DCEFCLK) call and issues an
info message.

Signed-off-by: Darren Powell <darren.powell@xxxxxxx>
Reviewed-by: Kenneth Feng <kenneth.feng@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 5 ++++-
drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 4 +++-
2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
index f2c8719b8395..52df6202a954 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
@@ -1110,7 +1110,6 @@ static int navi10_force_clk_levels(struct smu_context *smu,
case SMU_SOCCLK:
case SMU_MCLK:
case SMU_UCLK:
- case SMU_DCEFCLK:
case SMU_FCLK:
/* There is only 2 levels for fine grained DPM */
if (navi10_is_support_fine_grained_dpm(smu, clk_type)) {
@@ -1130,6 +1129,10 @@ static int navi10_force_clk_levels(struct smu_context *smu,
if (ret)
return size;
break;
+ case SMU_DCEFCLK:
+ dev_info(smu->adev->dev,"Setting DCEFCLK min/max dpm level is not supported!\n");
+ break;
+
default:
break;
}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index 31da8fae6fa9..471bbb78884b 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -1018,7 +1018,6 @@ static int sienna_cichlid_force_clk_levels(struct smu_context *smu,
case SMU_SOCCLK:
case SMU_MCLK:
case SMU_UCLK:
- case SMU_DCEFCLK:
case SMU_FCLK:
/* There is only 2 levels for fine grained DPM */
if (sienna_cichlid_is_support_fine_grained_dpm(smu, clk_type)) {
@@ -1038,6 +1037,9 @@ static int sienna_cichlid_force_clk_levels(struct smu_context *smu,
if (ret)
goto forec_level_out;
break;
+ case SMU_DCEFCLK:
+ dev_info(smu->adev->dev,"Setting DCEFCLK min/max dpm level is not supported!\n");
+ break;
default:
break;
}
--
2.30.2