Re: [PATCH 00/49] DRM driver for Hikey 970

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On Wed, Aug 19, 2020 at 2:36 PM John Stultz <john.stultz@xxxxxxxxxx> wrote:
>
> On Wed, Aug 19, 2020 at 4:46 AM Mauro Carvalho Chehab
> <mchehab+huawei@xxxxxxxxxx> wrote:
> > So, IMO, the best is to keep it on staging for a while, until those
> > remaining bugs gets solved.
> >
> > I added this series, together with the regulator driver and
> > a few other patches (including a hack to fix a Kernel 5.8
> > regression at WiFi ) at:
> >
> >         https://gitlab.freedesktop.org/mchehab_kernel/hikey-970/-/commits/master
>
> Sorry, one more small request: Could you create a branch that only has
> the DRM driver changes in it?
>
> The reason I ask, is that since the HiKey960 isn't affected by the
> majority of the problems you listed as motivation for going through
> staging. So if we can validate that your tree works fine on HiKey960,
> the series can be cleaned up and submitted properly upstream to enable
> that SoC, and the outstanding 970 issues can be worked out afterwards
> against mainline.

Just as a heads up, I tried testing your tree with my HiKey960, and
after fixing the compat string inconsistency, the drivers seem to load
properly. However the drm_hwcomposer seems to have some trouble with
the driver:
01-01 00:12:41.456   345   345 E hwc-drm-display-compositor: Commit
test failed for display 0, FIXME
01-01 00:12:41.456   345   345 E hwc-drm-two: Failed to apply the
frame composition ret=-22
01-01 00:12:41.456   351   351 E HWComposer:
presentAndGetReleaseFences: present failed for display 0: BadParameter
(4)

I'll dig in a bit further as to why, but wanted to give you a heads up.

thanks
-john
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