[Intel-gfx] [PATCH 2/2] drm/i915: make sure eDP panel is turned on
jbarnes at virtuousgeek.org
Mon Jul 26 19:23:23 CEST 2010
On Thu, 22 Jul 2010 13:18:19 -0700
Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> When enabling the eDP port, we need to make sure the panel is turned on
> after training the link. If we don't, it likely won't come back after
> suspend or may not come up at all.
> For unknown reasons, unlocking the panel regs before initiating a power
> on sequence is necessary. There are known bugs in the PCH panel
> sequencing logic, apparently this is one possible workaround.
> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28739.
> Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
Tested-by: "Paulo J. S. Silva" <pjssilva at gmail.com>
Jesse Barnes, Intel Open Source Technology Center
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