Re: OMAP DRM regression on N900

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Hi Adam,

On Wed, Aug 21, 2019 at 01:45:28PM -0500, Adam Ford wrote:
> On Wed, Aug 21, 2019 at 1:37 PM Laurent Pinchart wrote:
> > On Sun, Aug 18, 2019 at 05:08:38PM +0300, Aaro Koskinen wrote:
> > > Hi,
> > >
> > > I haven't got display working on N900 since v5.1. Bisected to:
> > >
> > > d17eb4537a7eb16da9eafbfd5717e12b45b77251 is the first bad commit
> > > commit d17eb4537a7eb16da9eafbfd5717e12b45b77251
> > > Author: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > > Date:   Wed Sep 12 19:41:31 2018 +0300
> > >
> > >     drm/omap: Factor out common init/cleanup code for output devices
> >
> > Sorry :-(
> >
> > I'll send a tentative fix, I'd appreciate if you could test it.
> 
> Can you point me to this patch?  I was in the process of
> troubleshooting both a DM37, OMAP35 and AM35 board who all have blank
> screens.  I'd like to try this patch too.

https://lists.freedesktop.org/archives/dri-devel/2019-August/232222.html

I forgot to CC linux-omap, I'll bounce the patch to do so now.

> > > looks like with this commit I get only the TV out:
> > >
> > > $ ls -l /sys/class/drm/
> > > total 0
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:15 card0 -> ../../devices/platform/omapdrm.0/drm/card0
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:15 card0-SVIDEO-1 -> ../../devices/platform/omapdrm.0/drm/card0/card0-SVIDEO-1
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:15 renderD128 -> ../../devices/platform/omapdrm.0/drm/renderD128
> > > -r--r--r--    1 root     root          4096 Aug 18 16:15 version
> > >
> > > with the previous commit both outputs are there:
> > >
> > > $ ls -l /sys/class/drm/
> > > total 0
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:28 card0 -> ../../devices/platform/omapdrm.0/drm/card0
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:28 card0-LVDS-1 -> ../../devices/platform/omapdrm.0/drm/card0/card0-LVDS-1
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:28 card0-SVIDEO-1 -> ../../devices/platform/omapdrm.0/drm/card0/card0-SVIDEO-1
> > > lrwxrwxrwx    1 root     root             0 Aug 18 16:28 renderD128 -> ../../devices/platform/omapdrm.0/drm/renderD128
> > > -r--r--r--    1 root     root          4096 Aug 18 16:28 version
> > >
> > > Used .config below.
> >
> > [snip]

-- 
Regards,

Laurent Pinchart



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