Maxime RipardandSasha Levin cf59354875 drm/vc4: hdmi: Make sure the controller is powered in detect ...

[ Upstream commit 9984d6664c ]

If the HPD GPIO is not available and drm_probe_ddc fails, we end up
reading the HDMI_HOTPLUG register, but the controller might be powered
off resulting in a CPU hang. Make sure we have the power domain and the
HSM clock powered during the detect cycle to prevent the hang from
happening.

Fixes: 4f6e3d66ac ("drm/vc4: Add runtime PM support to the HDMI encoder driver")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210525091059.234116-4-maxime@cerno.tech
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-06-30 08:47:17 -04:00

..

drm

drm/vc4: hdmi: Make sure the controller is powered in detect

2021-06-30 08:47:17 -04:00

host1x

gpu: host1x: Split up client initalization and registration

2021-06-18 10:00:04 +02:00

ipu-v3

gpu: ipu-v3: remove unused functions

2020-10-26 10:42:38 +01:00

trace

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vga

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Makefile

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