From: Alex Deucher Date: Mon, 28 Mar 2016 14:21:20 +0000 (-0400) Subject: drm/radeon: add a dpm quirk for all R7 370 parts X-Git-Tag: v3.12.59~35 X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a668a8394cc07e3e65f07a2039d38663cee83d1e;p=linux drm/radeon: add a dpm quirk for all R7 370 parts commit 0e5585dc870af947fab2af96a88c2d8b4270247c upstream. Higher mclk values are not stable due to a bug somewhere. Limit them for now. Signed-off-by: Alex Deucher Signed-off-by: Jiri Slaby --- diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 34527c050062..393217886d98 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -3008,6 +3008,10 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, ps->performance_levels[i].sclk = max_sclk; } } + /* limit mclk on all R7 370 parts for stability */ + if (rdev->pdev->device == 0x6811 && + rdev->pdev->revision == 0x81) + max_mclk = 120000; /* XXX validate the min clocks required for display */