diff options
| author | Darren Powell <darren.powell@amd.com> | 2021-04-08 00:40:34 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-29 05:56:14 +0200 |
| commit | d7b4a6077ec38763a1f6fed2b2f6a0113028eea7 (patch) | |
| tree | cd725119089ea112aa7a7c4f8f614c00d86d41e7 /drivers/gpu | |
| parent | amdgpu/pm: Prevent force of DCEFCLK on NAVI10 and SIENNA_CICHLID (diff) | |
| download | linux-d7b4a6077ec38763a1f6fed2b2f6a0113028eea7.tar.xz linux-d7b4a6077ec38763a1f6fed2b2f6a0113028eea7.zip | |
amdgpu/pm: set pp_dpm_dcefclk to readonly on NAVI10 and newer gpus
v2 : change condition to apply to all chips after NAVI10
Writing to dcefclk causes the gpu to become unresponsive, and requires a reboot.
Patch prevents user from successfully writing to file pp_dpm_dcefclk on parts
NAVI10 and newer, and gives better user feedback that this operation is not allowed.
Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/amdgpu_pm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index 204e34549013..a8d6cc2525b2 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -1891,6 +1891,14 @@ static int default_attr_update(struct amdgpu_device *adev, struct amdgpu_device_ } } + if (DEVICE_ATTR_IS(pp_dpm_dcefclk)) { + /* SMU MP1 does not support dcefclk level setting */ + if (asic_type >= CHIP_NAVI10) { + dev_attr->attr.mode &= ~S_IWUGO; + dev_attr->store = NULL; + } + } + #undef DEVICE_ATTR_IS return 0; |