commit b776b0f00f24 ("drm: mxsfb: Use bus_format from the nearest bridge if present") added bus format probing to mxsfb this exposed several issues in the display stack as used on the Librem 5:
The nwl bridge and the panels didn't bother to set any media bus formats and in that case mxsfb would not pick a reasonable default. This series aims to fix this. This series includes the patch from https://lore.kernel.org/dri-devel/yvlyh%2fsgbritg%2...@qwark.sigxcpu.org/ with a `dev_warn` added. The patches are against 5.15-rc3. I've marked a single patch with a 'fixes' which is enough to unbreak the display stack in 5.15. All patches of this series can be applied independently. Changes from v1: - Review comment by Marek Vasut https://lore.kernel.org/dri-devel/67e6056a-6157-795d-908d-d65cc803c...@denx.de/ Improve warning message - Move mxsfb patches to the end of the queue and the actual nwl fix to the front. Changes from v2: - Review comments by Lucas Stach https://lore.kernel.org/dri-devel/cover.1633332399.git....@sigxcpu.org/T/#m961c22bf2a437a16b29214913d6f0d523fbe88e2 Drop fixes tag from mxsfb driver and tweak commit message - Add Reviewed-by from Lucas https://lore.kernel.org/dri-devel/cover.1633332399.git....@sigxcpu.org/T/#m9f3337a673ae1adbb1f0152a48270b0e1104b0c1 https://lore.kernel.org/dri-devel/cover.1633332399.git....@sigxcpu.org/T/#m5706d5b93cb6879b6bb4a1810b88800fe4180f74 https://lore.kernel.org/dri-devel/cover.1633332399.git....@sigxcpu.org/T/#m961c22bf2a437a16b29214913d6f0d523fbe88e2 - Add Reviewd-by from Rober Foss https://lore.kernel.org/dri-devel/cag3jfyteqcpnzqrfsggcrnpdfsggqvibfhbezw+1hcf3-z9...@mail.gmail.com/ Guido Günther (5): drm/bridge: nwl-dsi: Add atomic_get_input_bus_fmts drm/panel: mantix: Add media bus format drm/panel: st7703: Add media bus format drm: mxsfb: Print failed bus format in hex drm: mxsfb: Set fallback bus format when the bridge doesn't provide one drivers/gpu/drm/bridge/nwl-dsi.c | 35 +++++++++++++++++++ drivers/gpu/drm/mxsfb/mxsfb_kms.c | 8 ++++- .../gpu/drm/panel/panel-mantix-mlaf057we51.c | 9 +++++ drivers/gpu/drm/panel/panel-sitronix-st7703.c | 8 +++++ 4 files changed, 59 insertions(+), 1 deletion(-) -- 2.33.0