[PATCH 2/9] drm/i915/intel_i2c: assign HDMI port D to pin pair 6
djkurtz at chromium.org
Wed Mar 7 10:03:14 PST 2012
On Wed, Mar 7, 2012 at 9:23 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Wed, 7 Mar 2012 19:50:43 +0800, Daniel Kurtz <djkurtz at chromium.org>
> > According to i915 documentation , "Port D" (DP/HDMI Port D) is
> > actually gmbus pin pair 6 (gmbus0.2:0 == 110b GPIOF), not 7 (111b).
> > Pin pair 7 is a reserved pair.
> >  Documentation for [DevSNB+] and [DevIBX], as found on
> > http://intellinuxgraphics.org
> The problem is I took those definitions from the gen2 specs, and munged
> in the obvious changes with gen3... And it appears that the GPIO pin
> assignment versus GMBUS has changed over the years. And so the can of
> worms is opened!
I'm not sure what exactly you mean by gen2 and gen3 specs, but, as far
as I can tell, the GPIO pin assignment is the same for both Cougar
Point (Sandy Bridge)  and Ibex Peak (?) . Although, the
documentation is a bit confusing and it is difficult to tell.
What do you mean exactly by gen2 & gen3? Can you point to docs?
> Chris Wilson, Intel Open Source Technology Centre
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