Messages in this thread | | | From | Doug Anderson <> | Date | Thu, 15 Jul 2021 08:05:31 -0700 | Subject | Re: [PATCH] drm/panel-simple: Power the panel when probing DP AUX backlight |
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Hi,
On Wed, Jul 14, 2021 at 9:34 AM Douglas Anderson <dianders@chromium.org> wrote: > > When I tried booting up a device that needed the DP AUX backlight, I > found an error in the logs: > panel-simple-dp-aux: probe of aux-ti_sn65dsi86.aux.0 failed with error -110 > > The aux transfers were failing because the panel wasn't powered. Just > like when reading the EDID we need to power the panel when trying to > talk to it. Add the needed pm_runtime calls. > > After I do this I can successfully probe the panel and adjust the > backlight on my board. > > Fixes: bfd451403d70 ("drm/panel-simple: Support DP AUX backlight") > Signed-off-by: Douglas Anderson <dianders@chromium.org> > --- > > drivers/gpu/drm/panel/panel-simple.c | 3 +++ > 1 file changed, 3 insertions(+)
Pushed with Lyude's review to drm-misc-next:
5ead9b5b1575 drm/panel-simple: Power the panel when probing DP AUX backlight
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