Re: [Intel-gfx] [PATCH 13/13] drm/i915/skl: Prefer even dividers for SKL DPLLs

2015-06-25 Thread Damien Lespiau
On Wed, May 27, 2015 at 07:08:38PM -0300, Paulo Zanoni wrote: > 2015-05-27 18:39 GMT-03:00 Paulo Zanoni : > > 2015-05-07 14:38 GMT-03:00 Damien Lespiau : > >> Currently, if an odd divider improves the deviation (minimizes it), we > >> take that divider. The recommendation is to prefer even dividers

Re: [Intel-gfx] [PATCH 13/13] drm/i915/skl: Prefer even dividers for SKL DPLLs

2015-05-27 Thread Paulo Zanoni
2015-05-27 18:39 GMT-03:00 Paulo Zanoni : > 2015-05-07 14:38 GMT-03:00 Damien Lespiau : >> Currently, if an odd divider improves the deviation (minimizes it), we >> take that divider. The recommendation is to prefer even dividers. > > The doc says "It is preferred to get as close to the DCO central

Re: [Intel-gfx] [PATCH 13/13] drm/i915/skl: Prefer even dividers for SKL DPLLs

2015-05-27 Thread Paulo Zanoni
2015-05-07 14:38 GMT-03:00 Damien Lespiau : > Currently, if an odd divider improves the deviation (minimizes it), we > take that divider. The recommendation is to prefer even dividers. The doc says "It is preferred to get as close to the DCO central frequency as possible, but using an even divider

Re: [Intel-gfx] [PATCH 13/13] drm/i915/skl: Prefer even dividers for SKL DPLLs

2015-05-08 Thread shuang . he
Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang...@intel.com) Task id: 6348 -Summary- Platform Delta drm-intel-nightly Series Applied PNV

[Intel-gfx] [PATCH 13/13] drm/i915/skl: Prefer even dividers for SKL DPLLs

2015-05-07 Thread Damien Lespiau
Currently, if an odd divider improves the deviation (minimizes it), we take that divider. The recommendation is to prefer even dividers. Signed-off-by: Damien Lespiau --- drivers/gpu/drm/i915/intel_ddi.c | 7 +++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_ddi.c