diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2013-04-01 16:06:25 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-11 07:18:30 -0700 |
| commit | a7586684298c3a6201393ea7c858416c31c17fce (patch) | |
| tree | dc75269093eb1da13b310e9326aca3f531d4b25c /drivers | |
| parent | 579b7f8405fb58f58461d3ae17b4d04699e6b110 (diff) | |
| download | lwn-a7586684298c3a6201393ea7c858416c31c17fce.tar.gz lwn-a7586684298c3a6201393ea7c858416c31c17fce.zip | |
drm/radeon: use frac fb div on RS780/RS880
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 21a892c6ab9c..6d6fdb3ba0d0 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -557,6 +557,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, /* use frac fb div on APUs */ if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; + /* use frac fb div on RS780/RS880 */ + if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880)) + radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; if (ASIC_IS_DCE32(rdev) && mode->clock > 165000) radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { |