Re: [Intel-gfx] [PATCH 3/4] drm/i915: set proper DPIO post divider for VGA on VLV v4

2013-05-06 Thread Daniel Vetter
On Mon, May 06, 2013 at 10:52:36AM -0700, Kenneth Graunke wrote: > On 05/02/2013 10:48 AM, Jesse Barnes wrote: > >Supposedly we should use the DAC divider for <300MHz pixel clocks, but as > >that doesn't actually work as well as the high freq divider here in > >practice, just use the high freq divi

Re: [Intel-gfx] [PATCH 3/4] drm/i915: set proper DPIO post divider for VGA on VLV v4

2013-05-06 Thread Kenneth Graunke
On 05/02/2013 10:48 AM, Jesse Barnes wrote: Supposedly we should use the DAC divider for <300MHz pixel clocks, but as that doesn't actually work as well as the high freq divider here in practice, just use the high freq divider all the time. v2: remove unconditional write (Jesse) check for p

[Intel-gfx] [PATCH 3/4] drm/i915: set proper DPIO post divider for VGA on VLV v4

2013-05-02 Thread Jesse Barnes
Supposedly we should use the DAC divider for <300MHz pixel clocks, but as that doesn't actually work as well as the high freq divider here in practice, just use the high freq divider all the time. v2: remove unconditional write (Jesse) check for pixel rate properly (Jesse) v3: give up, the DAC