[Intel-gfx] [PATCH 1/2] drm/i915: clear up backlight inversion confusion on gen4

Daniel Vetter daniel at ffwll.ch
Mon Apr 23 15:48:46 CEST 2012

On Mon, Apr 23, 2012 at 01:32:31PM +0100, Chris Wilson wrote:
> On Mon, 23 Apr 2012 14:21:20 +0200, Daniel Vetter <daniel at ffwll.ch> wrote:
> > On my specs bit29 is pipe assignement, we should set it if the panel is on
> > pipe B (well, it just takes the pll to do the modulation from that pipe
> > then).
> On CTL1 rather than CTL2, if that makes a difference. Listed in both the
> IBX and CPT specs as bit 29, backlight polarity. The joy of ever
> changing documentation.

Ah, in the PCH part, not the north display unit. I guess we have a little
mess here.
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48

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