From: Damon Ding <damon.ding@rock-chips•com>
To: hjc@rock-chips•com, heiko@sntech•de, andy.yan@rock-chips•com,
maarten.lankhorst@linux•intel.com, mripard@kernel•org,
tzimmermann@suse•de, airlied@gmail•com, simona@ffwll•ch,
robh@kernel•org, krzk+dt@kernel•org, conor+dt@kernel•org,
andrzej.hajda@intel•com, neil.armstrong@linaro•org,
rfoss@kernel•org
Cc: Laurent.pinchart@ideasonboard•com, jonas@kwiboo•se,
jernej.skrabec@gmail•com, nicolas.frattaroli@collabora•com,
cristian.ciocaltea@collabora•com,
sebastian.reichel@collabora•com,
dmitry.baryshkov@oss•qualcomm.com, luca.ceresoli@bootlin•com,
dianders@chromium•org, m.szyprowski@samsung•com,
dri-devel@lists•freedesktop.org, devicetree@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
linux-rockchip@lists•infradead.org, linux-kernel@vger•kernel.org,
Damon Ding <damon.ding@rock-chips•com>,
Conor Dooley <conor.dooley@microchip•com>
Subject: [PATCH v5 1/4] dt-bindings: display: bridge: analogix-dp: Add data-lanes support for endpoint
Date: Thu, 4 Jun 2026 16:52:17 +0800 [thread overview]
Message-ID: <20260604085220.2862986-2-damon.ding@rock-chips.com> (raw)
In-Reply-To: <20260604085220.2862986-1-damon.ding@rock-chips.com>
Add data-lanes property support to the port@1 endpoint for physical
lane mapping configuration.
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.
Additionally, add data-lanes setting in Rockchip eDP DT node example
to show actual lane mapping usage.
Acked-by: Conor Dooley <conor.dooley@microchip•com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora•com>
Signed-off-by: Damon Ding <damon.ding@rock-chips•com>
---
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 data-lanes adjustment of Rockchip eDP DT example into this
commit.
- Add unevaluatedProperties: false to both the port@1 and endpoint
nodes.
Changes in v5
- Add Acked-by and Reviewed-by tags.
---
.../bindings/display/bridge/analogix,dp.yaml | 19 ++++++++++++++-----
.../rockchip/rockchip,analogix-dp.yaml | 1 +
2 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,dp.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,dp.yaml
index 62f0521b0924..ecf206871cdd 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix,dp.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,dp.yaml
@@ -42,13 +42,22 @@ properties:
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
- description:
- Input node to receive pixel data.
+ description: Input node to receive pixel data.
port@1:
- $ref: /schemas/graph.yaml#/properties/port
- description:
- Port node with one endpoint connected to a dp-connector node.
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: Port node with one endpoint connected to sink device node.
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+ items:
+ enum: [ 0, 1, 2, 3 ]
required:
- port@0
diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml
index 6548f157fd96..39dafe75a680 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,analogix-dp.yaml
@@ -160,6 +160,7 @@ examples:
reg = <1>;
edp_out_panel: endpoint {
+ data-lanes = <0 1>;
remote-endpoint = <&panel_in_edp>;
};
};
--
2.34.1
next prev parent reply other threads:[~2026-06-04 8:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-04 8:52 [PATCH v5 0/4] Add eDP lane mapping support Damon Ding
2026-06-04 8:52 ` Damon Ding [this message]
2026-06-04 8:52 ` [PATCH v5 2/4] drm/dp: Add helper to validate DP lane counts Damon Ding
2026-06-04 8:52 ` [PATCH v5 3/4] drm/bridge: analogix_dp: Add validation for samsung,lane-count property Damon Ding
2026-06-04 8:52 ` [PATCH v5 4/4] drm/bridge: analogix_dp: Add support for optional data-lanes mapping Damon Ding
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