[PATCH v5 0/4] Add eDP lane mapping support

[Damon Ding]

Hi all,

Gentle ping on this patch series.

Best regards,
Damon

On 6/4/2026 4:52 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: Add validation for samsung,lane-count property as preparation
> Patch 4: Implement lane mapping in analogix_dp driver
> 
> Damon Ding (4):
>    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: 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    | 64 ++++++++++++++++++-
>   .../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, 97 insertions(+), 16 deletions(-)
> 
> ---
> 
> Changes in v2:
> - Add lane mapping application scenarios in commit message.
> - Remove redundant deprecated property 'data-lanes' for eDP node.
> - Update port at 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 at 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.
>