Since v6.17, there is a regression for the Exynos 7870 DSIM driver. The
display occasionally had random aberration when the panel was turned on.
The first patch addresses that.
The second patch replaces an implicit loop for waiting for PLL
stabilization with an interrupt-based solution, which should be more
reliable. This solution was suggested by Inki Dae in a discussion of an
earlier patch series sent by me. For further details, refer to its
commit description.
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
Changes in v3:
- Add patch for removing conflicting devices for DRM (Sam Day)
- Link to v2: https://lore.kernel.org/r/20260208-exynos-dsim-fixes-v2-0-a857e8130a2a@disroot.org
Changes in v2:
- drop now-not-required [v1 1/3] (Marek Szyprowski)
- Link to v1: https://lore.kernel.org/r/20260124-exynos-dsim-fixes-v1-0-122d047a23d1@disroot.org
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Kaustabh Chakraborty (3):
drm/bridge: samsung-dsim: enable MFLUSH_VS for Exynos 7870 DSIM
drm/bridge: samsung-dsim: use DSIM interrupt to wait for PLL stability
drm/exynos: remove simplefb nodes before init
drivers/gpu/drm/bridge/samsung-dsim.c | 48 +++++++++++++++++++++++----------
drivers/gpu/drm/exynos/exynos_drm_drv.c | 6 +++++
include/drm/bridge/samsung-dsim.h | 1 +
3 files changed, 41 insertions(+), 14 deletions(-)
---
base-commit: 290aaf24a551d5a0dce037e3fab30820f9113a10
change-id: 20260124-exynos-dsim-fixes-5383d6a6f073
Best regards,
--
Kaustabh Chakraborty <kauschluss@disroot.org>