Re: [git pull] drm fixes

Ed Tomlinson
2014-04-22T15:46:40Z

On Monday 21 April 2014 17:26:15 Ed Tomlinson wrote:
> On Monday 21 April 2014 15:08:24 Ed Tomlinson wrote:
> > On Monday 21 April 2014 10:25:25 Ed Tomlinson wrote:
> > > On Saturday 19 April 2014 21:03:05 Markus Trippelsdorf wrote:
> > > > On 2014.04.19 at 08:19 +0100, Dave Airlie wrote:
> > > > >
> > > > > Unfortunately this contains no easter eggs, its a bit larger than I'd
> > > > > like, but I included a patch that just moves code from one file to another
> > > > > and I'd like to avoid merge conflicts with that later, so it makes it seem
> > > > > worse than it is,
> > > >
> > > > > Christian König (2):
> > > > > drm/radeon: apply more strict limits for PLL params v2
> > > > > drm/radeon: improve PLL params if we don't match exactly v2
> > > >
> > > > commit f8a2645ecede4eaf90b3d785f2805c8ecb76d43e
> > > > Author: Christian König <christian.koenig@amd.com>
> > > > Date: Wed Apr 16 11:54:21 2014 +0200
> > > >
> > > > drm/radeon: improve PLL params if we don't match exactly v2
> > > >
> > > > The commit above causes my monitor to just stay blank after boot.
> > > > No framebuffer, no Xorg, no nothing. I'm using a Radeon RS780.
>
> Reverting
>
> commit 379dfc25e257ffe10eb53b86d2375f7c0f4f33ef
> Author: Alex Deucher <alexdeucher@gmail.com>
> Date: Mon Apr 7 10:33:46 2014 -0400
>
> drm/radeon/dp: switch to the common i2c over aux code
>
> Provides a nice cleanup in radeon.
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
> Signed-off-by: Christian König <christian.koenig@amd.com>
>
> Restores the display - no more i2c errors

This fixed here without reverts by the patch from Alex Deucher attached in the thread:
"Re: 3.15.0-rc2 radeon HD 7480D [Aruba] blank display"

Thanks
Ed

> > > I have the same symptoms with rc2 and a r7 260x using display port. I cannot
> > > seem to get a dmesg of a failure (I _really_ need to figure out how to add
> > > a serial console). I'll try reverting once I figure out how to get pacman to
> > > do a revert when building from git.
> >
> > Neither reverting the above patch or add the fix from "https://bugs.freedesktop.org/show_bug.cgi?id=77673"
> > helps here. I managed to get dmesg(s) from 14.1 and 15-rc2. The major difference has to do with i2c. On the
> > 14.1 kernel I see: