Re: Unable to boot mainline on snow chromebook since 3.15

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Hi all,

Sorry for the radio silence, the weekend happened :)

On Fri, Sep 05, 2014 at 02:56:42PM +0100, Vivek Gautam wrote:
> On Fri, Sep 5, 2014 at 7:16 PM, Ajay kumar <ajaynumb@xxxxxxxxx> wrote:
> >>> I'd usually try to debug this a bit further, but without a console it's
> >>> really painful to get anywhere. I've been working with 3.15, but now I'm
> >>> having to backport patches when I want to test them, which is more effort
> >>> than I can be bothered with.
> >>>
> >>> Is anybody else running mainline on this device and are these known/fixed
> >>> problems?
> > AFAIK, ARM chromebooks use DRM based display drivers and the required
> > patches are still not merged:
> > http://www.spinics.net/lists/dri-devel/msg66740.html
> >
> > Corresponding DT patches are also still not merged:
> > http://www.spinics.net/lists/arm-kernel/msg358324.html
> > http://www.spinics.net/lists/arm-kernel/msg358325.html
> >
> > There is a patch for configs as well:
> > https://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg35828.html
> >
> > Try these patches(I hope they will apply directly on 3.17-rc3) and you should
> > be able to use display on snow.
> 
> We have pushed 3.17-rc3 kernel with above mentioned patches to github [1]
> Please use that, and in case you have some other requirements let us know.
> 
> [1] https://github.com/exynos-reference/kernel/tree/exynos5-v3.17-rc3-display

I can give these a go but, as Marc has pointed out, things *used* to work
and it's a shame that I need to start carrying patches after vanilla 3.15
was usable.

Will
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