On Mon, Mar 02, 2026 at 05:10:40PM +0100, Marco Felsch wrote:
> From: Liu Ying <[email protected]>
>
> i.MX93 SoC mediamix blk-ctrl contains one DISPLAY_MUX register which
> configures parallel display format by using the "PARALLEL_DISP_FORMAT"
> field. Document the Parallel Display Format Configuration(PDFC) subnode
> and add the subnode to example.
>
> Reviewed-by: Rob Herring (Arm) <[email protected]>
> Signed-off-by: Liu Ying <[email protected]>
> [[email protected]: port to v7.0-rc1]
> [[email protected]: add bus-width]
> Signed-off-by: Marco Felsch <[email protected]>
> ---
> .../bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml | 78
> ++++++++++++++++++++++
> 1 file changed, 78 insertions(+)
>
> diff --git
> a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
> b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
> index
> 34aea58094e55365a2f9c86092f637e533f954ff..d828c2e82965c7a4cd69a67136047d83c96b0a35
> 100644
> --- a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
> +++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
> @@ -40,6 +40,58 @@ properties:
> minItems: 8
> maxItems: 10
>
> + dpi-bridge:
Cc'ing Frank.
fsl,ldb.yaml documents fsl,imx6sx-ldb, fsl,imx8mp-ldb and fsl,imx93-ldb
with a reg property. Since all of them are child devices of either GPR
or BLK_CTRL and this dpi-bridge is a child device of BLK_CTRL without a
reg property, how can we handle the inconsistency? At least, with this
patch and the current fsl,ldb.yaml, we cannot add an i.MX93 LDB child
node.
> + type: object
> + additionalProperties: false
> +
> + properties:
> + compatible:
> + enum:
> + - nxp,imx91-pdfc
> + - nxp,imx93-pdfc
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: Input port node to receive pixel data.
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description: Output port node to downstream pixel data receivers.
> +
> + properties:
> + endpoint:
> + $ref: /schemas/media/video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + bus-width:
> + enum: [ 16, 18, 24 ]
> + description:
> + Specify the physical parallel bus width.
> +
> + This property is optional if the display bus-width
> + matches the SoC bus-width, e.g. a 18-bit RGB666
> (display)
> + is connected and all 18-bit data lines are muxed to the
> + parallel-output pads.
> +
> + This property must be set to 18 to cut only the LSBs
> + instead of the MSBs in case a 24-bit RGB888 display is
> + connected and only the lower 18-bit data lanes are
> muxed
> + to the parallel-output pads.
> +
> + required:
> + - port@0
> + - port@1
> +
> + required:
> + - compatible
> + - ports
> +
> allOf:
> - if:
> properties:
> @@ -112,4 +164,30 @@ examples:
> clock-names = "apb", "axi", "nic", "disp", "cam",
> "pxp", "lcdif", "isi", "csi", "dsi";
> #power-domain-cells = <1>;
> +
> + dpi-bridge {
> + compatible = "nxp,imx93-pdfc";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + pdfc_from_lcdif: endpoint {
> + remote-endpoint = <&lcdif_to_pdfc>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + pdfc_to_panel: endpoint {
> + remote-endpoint = <&panel_from_pdfc>;
> + bus-width = <18>;
> + };
> + };
> + };
> + };
> };
>
--
Regards,
Liu Ying
