diff options
| author | Alex Deucher <alexdeucher@gmail.com> | 2011-02-16 21:17:04 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-02-17 13:55:47 +1000 |
| commit | 9f4283f49f0a96a64c5a45fe56f0f8c942885eef (patch) | |
| tree | 014b8efe01702cd00ded766dd0b2a5daa15fa36c /drivers | |
| parent | 16e4b8a6e44b8c736c37af370afaa428c3239fb6 (diff) | |
drm/radeon/kms: add missing frac fb div flag for dce4+
The fixed ref/post dividers are set by the AdjustPll table
rather than the ss info table on dce4+. Make sure we enable
the fractional feedback dividers when using a fixed post
or ref divider on them as well.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=29272
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 095bc507fb1..a4e5e53e0a6 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -557,9 +557,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, /* use recommended ref_div for ss */ if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { - pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; if (ss_enabled) { if (ss->refdiv) { + pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; pll->flags |= RADEON_PLL_USE_REF_DIV; pll->reference_div = ss->refdiv; if (ASIC_IS_AVIVO(rdev)) @@ -662,10 +662,12 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, index, (uint32_t *)&args); adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10; if (args.v3.sOutput.ucRefDiv) { + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; pll->flags |= RADEON_PLL_USE_REF_DIV; pll->reference_div = args.v3.sOutput.ucRefDiv; } if (args.v3.sOutput.ucPostDiv) { + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; pll->flags |= RADEON_PLL_USE_POST_DIV; pll->post_div = args.v3.sOutput.ucPostDiv; } |