On 2/29/2016 2:35 PM, Jani Nikula wrote:
On Fri, 26 Feb 2016, Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> wrote:
Hi Jani and Daniel,
I believe I forgot to cc:stable on this one and this is missing on
most branches out there including Linus 4.5-r5.
Is there any chance to get this patch in for 4.5? without this i915 is
not working on KBL.
Is the referenced commit by Michel also required?
Michel had found the main error first and his
fix had better details on the history and got
merged already:
commit 16fbc291cb87c7defcd13ad715d3e4af0d523e43
Author: Michel Thierry <michel.thierry@xxxxxxxxx>
Date: Wed Jan 6 12:08:36 2016 +0000
drm/i915/kbl: Enable PW1 and Misc I/O power wells
If that's needed, what else is needed? Where does the rabbit hole end?
Good thing is that this platform is still protected by preliminary_hw_support.
We do not backport cc: stable fixes for platforms that only have
preliminary hw support.
v4.5 is not released yet, and although towards the later -rc's the rules
are pretty much the same as for stable kernels, I might consider
cherry-picking kbl fixes that make platform enabling or early adoption
easier.
Hi Jani,
Now that v4.5 has been released, would you consider _backporting_ these
two patches to allow kbl to boot?
AFAIK, these are the only patches needed,
drm/i915/kbl: Enable PW1 and Misc I/O power wells
[https://cgit.freedesktop.org/drm-intel/commit/?id=16fbc291cb87c7defcd13ad715d3e4af0d523e43]
and
drm/i915/kbl: Adding missing IS_KABYLAKE checks
[https://cgit.freedesktop.org/drm-intel/commit/?id=8d7a1c4a579c4ecfe360044c24dc1fbf97096752]
Thanks,
-Michel
BR,
Jani.
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