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

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 divider all

[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