提交 7fe04d6f 编写于 作者: A Alex Deucher

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: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
上级 38aef154
......@@ -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 */
......
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