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

Chris Wilson chris at chris-wilson.co.uk
Mon Apr 23 14:32:31 CEST 2012

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.

Chris Wilson, Intel Open Source Technology Centre

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