Messages in this thread Patch in this message | | | Date | Tue, 22 Feb 2011 14:17:16 -0800 | From | Greg KH <> | Subject | [37/70] drm/radeon/kms: add missing frac fb div flag for dce4+ |
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2.6.37-stable review patch. If anyone has any objections, please let us know.
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From: Alex Deucher <alexdeucher@gmail.com>
commit 9f4283f49f0a96a64c5a45fe56f0f8c942885eef upstream.
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> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/gpu/drm/radeon/atombios_crtc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -533,9 +533,9 @@ static u32 atombios_adjust_pll(struct dr /* 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)) @@ -650,10 +650,12 @@ static u32 atombios_adjust_pll(struct dr 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; }
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