| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.4 177/214] drm/radeon: use frac fb div on RS780/RS880 | Date | Wed, 4 Jun 2014 21:19:00 -0700 |
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3.4-stable review patch. If anyone has any objections, please let me know.
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From: Alex Deucher <alexander.deucher@amd.com>
commit 411678288d61ba17afe1f8afed92200be6bbc65d upstream.
Monitors seem to prefer it. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=37696
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> [bwh: Backported to 3.2: - Adjust context - Add to pll->flags, not radeon_crtc->pll_flags] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Weng Meiling <wengmeiling.weng@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/radeon/atombios_crtc.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -573,6 +573,9 @@ static u32 atombios_adjust_pll(struct dr /* use frac fb div on APUs */ if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; + /* use frac fb div on RS780/RS880 */ + if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880)) + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; if (ASIC_IS_DCE32(rdev) && mode->clock > 165000) pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else {
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