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| author | Alex Deucher <alexander.deucher@amd.com> | 2015-04-19 19:01:00 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-04-27 16:54:57 +0300 |
| commit | 7fe04d6fa824ccea704535a597dc417c8687f990 (patch) | |
| tree | 33471f124a0fc2191759b7cd6f7ac716c432c4a6 /drivers/gpu | |
| parent | 38aef1549b18539eaecd804383a6ccb6588a9ce1 (diff) | |
| download | linux-7fe04d6fa824ccea704535a597dc417c8687f990.tar.xz | |
drm/radeon: adjust pll when audio is not enabled
Fixes display problems with some monitors when audio
is not enabled.
Bugs:
https://bugs.freedesktop.org/show_bug.cgi?id=89505
https://bugzilla.kernel.org/show_bug.cgi?id=94171
Plus several reports on IRC.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index dac78ad24b31..42b2ea3fdcf3 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -580,6 +580,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, else radeon_crtc->pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV; + /* if there is no audio, set MINM_OVER_MAXP */ + if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) + radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; if (rdev->family < CHIP_RV770) radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; /* use frac fb div on APUs */ |