[PATCH] drm/radeon: only apply the SS fractional workaround to RS[78]80

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On Thu, Aug 18, 2016 at 9:40 AM, Deucher, Alexander
<Alexander.Deucher at amd.com> wrote:
>> -----Original Message-----
>> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
>> Of Christian König
>> Sent: Thursday, August 18, 2016 5:51 AM
>> To: amd-gfx at lists.freedesktop.org
>> Cc: Deucher, Alexander
>> Subject: [PATCH] drm/radeon: only apply the SS fractional workaround to
>> RS[78]80
>>
>> From: Christian König <christian.koenig at amd.com>
>>
>> Looks like some RV6xx have problems with that.
>>
>> Signed-off-by: Christian König <christian.koenig at amd.com>
>
> Please mention the bugzilla in the patch.  With that included:
> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

Fixed up and applied.

Alex

>
>> ---
>>  drivers/gpu/drm/radeon/atombios_crtc.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c
>> b/drivers/gpu/drm/radeon/atombios_crtc.c
>> index a97abc8..1dcf390 100644
>> --- a/drivers/gpu/drm/radeon/atombios_crtc.c
>> +++ b/drivers/gpu/drm/radeon/atombios_crtc.c
>> @@ -627,7 +627,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
>>                       if (radeon_crtc->ss.refdiv) {
>>                               radeon_crtc->pll_flags |=
>> RADEON_PLL_USE_REF_DIV;
>>                               radeon_crtc->pll_reference_div =
>> radeon_crtc->ss.refdiv;
>> -                             if (rdev->family >= CHIP_RV770)
>> +                             if (ASIC_IS_AVIVO(rdev) &&
>> +                                 rdev->family != CHIP_RS780 &&
>> +                                 rdev->family != CHIP_RS880)
>>                                       radeon_crtc->pll_flags |=
>> RADEON_PLL_USE_FRAC_FB_DIV;
>>                       }
>>               }
>> --
>> 2.5.0
>>
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