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| author | Alex Deucher <alexander.deucher@amd.com> | 2016-03-28 10:21:20 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-20 15:40:40 +0900 |
| commit | c59ffbe17b2b6c9f68bf4f101e4d6b16b5254aa5 (patch) | |
| tree | 6dc8eca1a930bc5c7bc85950568df601cba03c1c | |
| parent | b29ddd02cdfa8316e7b54fe438cbf01e10eef7e7 (diff) | |
| download | lwn-c59ffbe17b2b6c9f68bf4f101e4d6b16b5254aa5.tar.gz lwn-c59ffbe17b2b6c9f68bf4f101e4d6b16b5254aa5.zip | |
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 <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/radeon/si_dpm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index daa6af922dee..93abc111307f 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -3007,6 +3007,10 @@ 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 */ |