drm/bridge: analogix_dp: Add support for optional data-lanes mapping

Browse source

Parse the optional 'data-lanes' device tree property to support
custom physical lane mapping configuration.

If no valid configuration is found, fall back to the default
lane map (0, 1, 2, 3) automatically and keep the driver running.

Lane mapping is mainly used for below scenarios:
1. Correct PCB lane swap and differential line routing crossover
   without hardware changes;
2. Adapt mismatched lane pin definitions between SoC and eDP panel;
3. Support multiple panel hardware variants on the same board
   by configuring data-lanes in device tree only.

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20260828065153.590802-6-damon.ding@rock-chips.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

...

This commit is contained in:

Damon Ding 2026-08-28 14:51:53 +08:00 • committed by Luca Ceresoli

parent 4ff2f941b7

commit bf63a72ea0

4 changed files with 84 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

70

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c

View file

4

drivers/gpu/drm/bridge/analogix/analogix_dp_core.h

View file

15

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c

View file

4

drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h

View file