Some LVDS panels, such as the innolux,g101ice-l01 support multiple LVDS data mapping modes, which can be configured by strapping a dataformat pin on the display to a specific voltage. This can be particularly useful for using the jeida-18 format, which requires only 3 instead of 4 LVDS lanes. This series moves the data-mapping property for LVDS panels in a separate file and optionally adds it to simple-panel when matching to the innolux,g101ice-l01 compatible. This property allows to override the default data mapping set in the panel description in simple-panel. The last patch in this series actually adds the driver support for parsing the data format override device tree property and modifying the corresponding values for bit per color and media bus format in the panel descriptor. Best regards Johannes --- Changelog: v2 -> v3: - dt bindings: Worked in Conor's and Laurent's Feedback (thanks for your review): Drop the chomping indicator - dt bindings: Worked in Laurent's Feedback: fix typos - driver: worked in Laurent's review findings: - extract function for fixing up the bus format - only call this function on LVDS panels - fix typo - Link to v2: https://lore.kernel.org/r/20230523-simplepanel_support_nondefault_datamapping-v2-0-87196f0d0b64@xxxxxxxxxxxxxx v1 -> v2: - dt bindings: Worked in Rob's review findings (thanks for your review), refactored to use common include instead of duplication - driver: added missing error unwinding goto, as found by Dan Carpenter's test robot: Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <error27@xxxxxxxxx> Link: https://lore.kernel.org/r/202304160359.4LHmFOlU-lkp@xxxxxxxxx/ To: David Airlie <airlied@xxxxxxxxx> To: Daniel Vetter <daniel@xxxxxxxx> To: Rob Herring <robh+dt@xxxxxxxxxx> To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx> To: Conor Dooley <conor+dt@xxxxxxxxxx> To: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> To: Thierry Reding <thierry.reding@xxxxxxxxx> To: Neil Armstrong <neil.armstrong@xxxxxxxxxx> To: Sam Ravnborg <sam@xxxxxxxxxxxx> Cc: patchwork-jzi@xxxxxxxxxxxxxx Cc: kernel@xxxxxxxxxxxxxx Cc: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx Signed-off-by: Johannes Zink <j.zink@xxxxxxxxxxxxxx> --- Johannes Zink (3): dt-bindings: display: move LVDS data-mapping definition to separate file dt-bindings: display: simple: support non-default data-mapping drm/panel-simple: allow LVDS format override .../bindings/display/lvds-data-mapping.yaml | 84 ++++++++++++++++++++++ .../devicetree/bindings/display/lvds.yaml | 77 +++----------------- .../bindings/display/panel/panel-simple.yaml | 26 ++++++- drivers/gpu/drm/panel/panel-simple.c | 55 +++++++++++++- 4 files changed, 172 insertions(+), 70 deletions(-) --- base-commit: 52920704df878050123dfeb469aa6ab8022547c1 change-id: 20230523-simplepanel_support_nondefault_datamapping-13c3f2ea28f8 Best regards, -- Johannes Zink <j.zink@xxxxxxxxxxxxxx>