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drm/radeon/kms/atom: get better min pixel clock info

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Where supported use ulMinPixelClockPLL_Output rather than
usMinPixelClockPLL_Output for pll_out_min.  This seems to
improve pll selection on some boards.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Mathias Fröhlich 2009-10-19 17:49:49 -04:00 committed by Dave Airlie
parent 790cfb34ad
commit bc293e58cb
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -641,8 +641,12 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
le16_to_cpu(firmware_info->info.usReferenceClock);
p1pll->reference_div = 0;
p1pll->pll_out_min =
le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Output);
if (crev < 2)
p1pll->pll_out_min =
le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Output);
else
p1pll->pll_out_min =
le32_to_cpu(firmware_info->info_12.ulMinPixelClockPLL_Output);
p1pll->pll_out_max =
le32_to_cpu(firmware_info->info.ulMaxPixelClockPLL_Output);