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authorDave Stevenson <dave.stevenson@raspberrypi.com>2022-12-07 11:22:49 +0100
committerMaxime Ripard <maxime@cerno.tech>2022-12-15 08:57:17 +0100
commit7d7bf35d630751fb27f2041c680a5ddccae9d83c (patch)
tree4fca951626fd3f6788b8cba91d4da0eb0b071679 /drivers/gpu/drm/ingenic/ingenic-ipu.c
parent78df640394cd0de88b9f84982f90f2079e60a5b7 (diff)
downloadlinux-7d7bf35d630751fb27f2041c680a5ddccae9d83c.tar.gz
drm/vc4: dsi: Remove entry to ULPS from vc4_dsi post_disable
Post_disable was sending the D-PHY sequence to put any device into ULPS suspend mode, and then cutting power to the DSI block. The power-on reset state of the DSI block is for DSI to be in an operational state, not ULPS, so it then never sent the sequence for exiting ULPS. Any attached device that didn't have an external reset therefore remained in ULPS / standby, and didn't function. Use of ULPS isn't well specified in DRM, therefore remove entering it to avoid the above situation. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> Link: https://lore.kernel.org/r/20221207-rpi-dsi-bridge-v1-6-8f68ee0b0adb@cerno.tech Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/ingenic/ingenic-ipu.c')
0 files changed, 0 insertions, 0 deletions