On Thu, Jan 29, 2015 at 10:01 AM, Christian König deathsimple@vodafone.de wrote:

From: Christian König christian.koenig@amd.com

This is a workaround for RS880 and older chips which seem to have an additional limit on the minimum PLL input frequency.

v2: fix signed/unsigned warning

Signed-off-by: Christian König christian.koenig@amd.com

Added to my -fixes queue.

Thanks!

Alex

---

drivers/gpu/drm/radeon/radeon_display.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 1021169..913fafa 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -960,6 +960,9 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && pll->flags & RADEON_PLL_USE_REF_DIV) ref_div_max = pll->reference_div;

•   else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
  

•           /* fix for problems on RS880 */
  

•           ref_div_max = min(pll->max_ref_div, 7u);
    else
            ref_div_max = pll->max_ref_div;
  
  

-- 1.9.1