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drm/radeon: disable mclk dpm on R7 260X

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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
This commit is contained in:
Alex Deucher 2014-04-10 22:29:03 -04:00 committed by Christian König
parent 5df5242d34
commit 57700ad1f2
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/radeon/ci_dpm.c
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@ -5146,6 +5146,10 @@ int ci_dpm_init(struct radeon_device *rdev)
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;