[Intel-gfx] [PATCH] drm/dp: Increase link status size

Thierry Reding thierry.reding at gmail.com
Tue Oct 29 14:07:25 UTC 2019


On Tue, Oct 29, 2019 at 03:32:41PM +0200, Jani Nikula wrote:
> On Tue, 29 Oct 2019, Thierry Reding <thierry.reding at gmail.com> wrote:
> > From: Thierry Reding <treding at nvidia.com>
> >
> > The current link status contains bytes 0x202 through 0x207, but we also
> > want to make sure to include the DP_ADJUST_REQUEST_POST_CURSOR2 (0x20c)
> > so that the post-cursor adjustment can be queried during link training.
> 
> We don't currently use this in i915 (we probably should), so the impact
> here is that we'll just read more DPCD than before. I quickly perused
> i915, and this does not appear to directly break anything. I think the
> change is probably fine, but at the same time it freaks me out a bit...
> 
> If you don't mind, please resend this with Cc:
> intel-gfx at lists.freedesktop.org to have our CI crunch through it across
> a number of platforms. Would give me a warm fuzzy feeling. :)
> 
> With the caveat that I didn't look at any other drivers besides i915,
> 
> Reviewed-by: Jani Nikula <jani.nikula at intel.com>

Done, thanks.

Thierry
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