Re: [PATCH v6 0/5] Add eDP lane mapping support

[Damon Ding <damon.ding@rock-chips.com>]

Gentle ping.

On 7/7/2026 12:06 PM, Damon Ding wrote:
> This series adds configurable eDP physical lane mapping support via
> device tree data-lanes property.
> 
> 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.
> 
> The series includes driver implementation and device tree binding
> updates to support custom lane mapping configuration from endpoint
> node, and keeps default linear lane order if no configuration is given.
> 
> Patch 1: Add endpoint data-lanes property to analogix-dp binding
> Patch 2: Add DRM DP helper API to validate DP lane counts
> Patch 3: Restore mandatory for samsung,link-rate and samsung,lane-count
>           properties
> Patch 4: Add validation for samsung,lane-count property as preparation
> Patch 5: Implement lane mapping in analogix_dp driver
> 
> Damon Ding (5):
>    dt-bindings: display: bridge: analogix-dp: Add data-lanes support for
>      endpoint
>    drm/dp: Add helper to validate DP lane counts
>    drm/bridge: analogix_dp: Restore mandatory samsung DP DT properties
>    drm/bridge: analogix_dp: Add validation for samsung,lane-count
>      property
>    drm/bridge: analogix_dp: Add support for optional data-lanes mapping
> 
>   .../bindings/display/bridge/analogix,dp.yaml  | 19 +++--
>   .../rockchip/rockchip,analogix-dp.yaml        |  1 +
>   .../drm/bridge/analogix/analogix_dp_core.c    | 70 +++++++++++++++++--
>   .../drm/bridge/analogix/analogix_dp_core.h    |  4 +-
>   .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 15 ++--
>   .../gpu/drm/bridge/analogix/analogix_dp_reg.h |  4 ++
>   include/drm/display/drm_dp_helper.h           |  6 ++
>   7 files changed, 101 insertions(+), 18 deletions(-)
> 
> ---
> 
> Changes in v2:
> - Add lane mapping application scenarios in commit message.
> - Remove redundant deprecated property 'data-lanes' for eDP node.
> - Update port@1 $ref to /schemas/graph.yaml#/$defs/port-base.
> 
> Changes in v3:
> - Squash [PATCH v2 2/3] into [PATCH v2 1/3].
> - Add unevaluatedProperties: false to both the port@1 and endpoint
>    nodes.
> 
> Changes in v4:
> - Add validation for samsung,lane-count property as preparation.
> 
> Changes in v5:
> - Add DRM DP helper API to validate DP lane counts.
> - Apply DRM DP helper API to check the validity of samsung,lane-count
>    property.
> - Add Acked-by and Reviewed-by tags.
> 
> Changes in v6:
> - Add a seperate commit to restore mandatory samsung DP DT properties.
> - Add Reviewed-by tag.
> 


_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip