diff options
| author | Evan Quan <evan.quan@amd.com> | 2021-05-25 18:24:47 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-30 00:18:22 -0400 |
| commit | 754e9883d48c2e3a50c4d53c42905e25df3862c7 (patch) | |
| tree | c18d4abd56ae1705fc5179a29bf3fa1f17024084 /drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | |
| parent | adcf949e664a8b04df2fb8aa916892e58561653c (diff) | |
drm/amdgpu: correct clock gating settings on feature unsupported
Clock gating setting is still performed even when the corresponding
CG feature is not supported. And the tricky part is disablement is
actually performed no matter for enablement or disablement request.
That seems not logically right.
Considering HW should already properly take care of the CG state, we
will just skip the corresponding clock gating setting when the feature
is not supported.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c index 754b11dea6f0..7b79eeaa88aa 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v2_3.c @@ -220,8 +220,11 @@ static void nbio_v2_3_update_medium_grain_clock_gating(struct amdgpu_device *ade { uint32_t def, data; + if (!(adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) + return; + def = data = RREG32_PCIE(smnCPM_CONTROL); - if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_MGCG)) { + if (enable) { data |= (CPM_CONTROL__LCLK_DYN_GATE_ENABLE_MASK | CPM_CONTROL__TXCLK_DYN_GATE_ENABLE_MASK | CPM_CONTROL__TXCLK_LCNT_GATE_ENABLE_MASK | @@ -246,8 +249,11 @@ static void nbio_v2_3_update_medium_grain_light_sleep(struct amdgpu_device *adev { uint32_t def, data; + if (!(adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) + return; + def = data = RREG32_PCIE(smnPCIE_CNTL2); - if (enable && (adev->cg_flags & AMD_CG_SUPPORT_BIF_LS)) { + if (enable) { data |= (PCIE_CNTL2__SLV_MEM_LS_EN_MASK | PCIE_CNTL2__MST_MEM_LS_EN_MASK | PCIE_CNTL2__REPLAY_MEM_LS_EN_MASK); |