drm/amdgpu/si_dpm: Limit clocks on HD86xx part

Limit clocks on a specific HD86xx part to avoid
crashes (while awaiting an appropriate PP fix).

Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/si_dpm.c b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
index 8bd08925b370..3de7bca5854b 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
@@ -3499,6 +3499,12 @@ static void si_apply_state_adjust_rules(struct amdgpu_device *adev,
                 max_sclk = 75000;
                 max_mclk = 80000;
         }
+        /* Limit clocks for some HD8600 parts */
+        if (adev->pdev->device == 0x6660 &&
+            adev->pdev->revision == 0x83) {
+                max_sclk = 75000;
+                max_mclk = 80000;
+        }
 
         if (rps->vce_active) {
                 rps->evclk = adev->pm.dpm.vce_states[adev->pm.dpm.vce_level].evclk;