[Intel-gfx] [PATCH] drm/i915: be sure panel is powered up in eDP configs

Keith Packard keithp at keithp.com
Thu Jul 15 02:27:38 CEST 2010

On Wed, 14 Jul 2010 15:40:56 -0700, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28739.  We need to
> enable power to the panel with the AUX VDD bit in order to properly
> detect the eDP attached panel, and we also need to turn the panel on in
> case it was off when we started (as happens at resume time).
> But this patch raises a couple of questions:
>   1) why does the first panel on sequence time out?
>   2) why do I need to unlock the panel protected regs?
> Keith, I think this is your code, any ideas?

I just wrote the DP code, not the eDP code. I haven't any idea why the
panel on sequence is timing out, although I note that you unlock the
panel regs after turning it on...

keith.packard at intel.com
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