drm/radeon: disable mclk dpm on R7 260X
Setting higher mclks seems to cause stability issues
on some R7 260X boards. Disable it for now for stability
until we find a proper fix.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75992
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index cad89a9..6d395ec 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -5146,6 +5146,10 @@
pi->mclk_dpm_key_disabled = 0;
pi->pcie_dpm_key_disabled = 0;
+ /* mclk dpm is unstable on some R7 260X cards */
+ if (rdev->pdev->device == 0x6658)
+ pi->mclk_dpm_key_disabled = 1;
+
pi->caps_sclk_ds = true;
pi->mclk_strobe_mode_threshold = 40000;