Adding lcdif nodes to a power domain currently does work, it results in black/corrupted screens or hangs. While the driver does enable runtime pm it does not deal correctly with the block being unpowered. Changes since v2: * Split into multiple commits. * Use #ifdef CONFIG_PM_SLEEP. * Switch to drm_atomic_helper_commit_tail_rpm Patch 1 was split because it's useful alone. Patches 2/3 could maybe be squashed. I'm not sure patch 4 handles vblanks correctly. It does not replace patch 1 because there is still a small window between enabling the pipe and the first atomic_update and also somebody needs to write to NEXT_BUF. Link to v2: https://lkml.org/lkml/2018/7/17/414 drivers/gpu/drm/mxsfb/mxsfb_crtc.c | 42 +++++++++++++++++++++--------- drivers/gpu/drm/mxsfb/mxsfb_drv.c | 40 ++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 13 deletions(-) -- 2.17.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
