[PATCH v3 1/4] dt-bindings: display: bridge: ldb: allow a single reg for fsl,imx6sx-ldb
From: <hidden>
Date: 2026-07-23 19:14:34
Also in:
dri-devel, imx, linux-devicetree, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, open firmware and flattened device tree bindings, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Frank Li <Frank.Li@nxp.com> The i.MX6SX LDB only provides a single register region for the LDB block, while other supported LDB variants require two register regions. Update the binding schema to allow a single reg entry for fsl,imx6sx-ldb while keeping the existing constraints unchanged for the other compatible strings. Fix below DTB_CHECK warings: arch/arm/boot/dts/nxp/imx/imx6sx-nitrogen6sx.dtb: bridge@18 (fsl,imx6sx-ldb): reg: [[24, 4]] is too short Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Frank Li <Frank.Li@nxp.com> --- Related two theads: - https://lore.kernel.org/imx/178154922879.1630652.11500293336634076421.robh@kernel.org/ (local) Mixing the addressable and non-addressable child nodes is allowed according to discussion [1]. Link: https://lore.kernel.org/all/n6akxiayi3g6gxcqhreb4iaohmeokoalnqup6h5r2fwdt4zijt@u2wyps55ayqm/ (local) [1] --- .../bindings/display/bridge/fsl,ldb.yaml | 23 +++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml
index 7f380879fffdf..e5a8870bb76a6 100644
--- a/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml@@ -28,9 +28,11 @@ properties: const: ldb reg: + minItems: 1 maxItems: 2 reg-names: + minItems: 1 items: - const: ldb - const: lvds
@@ -83,15 +85,6 @@ allOf: ports: properties: port@2: false - - if: - not: - properties: - compatible: - contains: - const: fsl,imx6sx-ldb - then: - required: - - reg-names - if: properties:
@@ -100,7 +93,19 @@ allOf: const: fsl,imx6sx-ldb then: properties: + reg: + maxItems: 1 + reg-names: + maxItems: 1 nxp,enable-termination-resistor: false + else: + required: + - reg-names + properties: + reg: + minItems: 2 + reg-names: + minItems: 2 additionalProperties: false
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2.43.0