Re: [Intel-gfx] [PATCH 1/6] drm/i915/vlv: assert and de-assert sideband reset at boot and resume v3

2014-05-28 Thread Ville Syrjälä
On Tue, May 27, 2014 at 10:24:14PM +0200, Daniel Vetter wrote: On Tue, May 27, 2014 at 10:32:47PM +0300, Ville Syrjälä wrote: On Fri, May 23, 2014 at 01:16:40PM -0700, Jesse Barnes wrote: This is a bit like the CMN reset de-assert we do in DPIO_CTL, except that it resets the whole common

Re: [Intel-gfx] [PATCH 1/6] drm/i915/vlv: assert and de-assert sideband reset at boot and resume v3

2014-05-27 Thread Daniel Vetter
On Tue, May 27, 2014 at 10:32:47PM +0300, Ville Syrjälä wrote: On Fri, May 23, 2014 at 01:16:40PM -0700, Jesse Barnes wrote: This is a bit like the CMN reset de-assert we do in DPIO_CTL, except that it resets the whole common lane section of the PHY. This is required on machines where the

[Intel-gfx] [PATCH 1/6] drm/i915/vlv: assert and de-assert sideband reset at boot and resume v3

2014-05-23 Thread Jesse Barnes
This is a bit like the CMN reset de-assert we do in DPIO_CTL, except that it resets the whole common lane section of the PHY. This is required on machines where the BIOS doesn't do this for us on boot or resume to properly re-calibrate and get the PHY ready to transmit data. Without this patch,