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Message-ID: <20251208012826.GA340359-robh@kernel.org>
Date: Sun, 7 Dec 2025 19:28:26 -0600
From: Rob Herring <robh@...nel.org>
To: Marco Felsch <m.felsch@...gutronix.de>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>,
Liu Ying <victor.liu@....com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
devicetree@...r.kernel.org, imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v7 1/3] dt-bindings: soc: imx93-media-blk-ctrl: Add PDFC
subnode to schema and example
On Tue, Dec 02, 2025 at 02:32:58PM +0100, Marco Felsch wrote:
> From: Liu Ying <victor.liu@....com>
>
> 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.
>
> Signed-off-by: Liu Ying <victor.liu@....com>
> [m.felsch@...gutronix.de: port to v6.18-rc1]
> [m.felsch@...gutronix.de: add bus-width]
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> ---
> .../bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml | 92 ++++++++++++++++++++++
> 1 file changed, 92 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..6e2d86d9341c75108b492bcbabc8a560d8e707cd 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
> @@ -26,6 +26,12 @@ properties:
> reg:
> maxItems: 1
>
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 1
> +
And 'ranges' needed.
> '#power-domain-cells':
> const: 1
>
> @@ -40,6 +46,60 @@ properties:
> minItems: 8
> maxItems: 10
>
> + bridge@60:
> + type: object
> + additionalProperties: false
> +
> + properties:
> + compatible:
> + const: nxp,imx93-pdfc
> +
> + reg:
> + maxItems: 1
> +
> + 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:
> + $ref: /schemas/graph.yaml#/$defs/endpoint-base
> + 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 lanes 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
> + - reg
> + - ports
> +
> allOf:
> - if:
> properties:
> @@ -81,9 +141,12 @@ allOf:
> - const: isi
> - const: csi
> - const: dsi
> +
> required:
> - compatible
> - reg
> + - '#address-cells'
> + - '#size-cells'
> - power-domains
> - clocks
> - clock-names
> @@ -112,4 +175,33 @@ examples:
> clock-names = "apb", "axi", "nic", "disp", "cam",
> "pxp", "lcdif", "isi", "csi", "dsi";
> #power-domain-cells = <1>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + bridge@60 {
> + compatible = "nxp,imx93-pdfc";
> + reg = <0x60 0x4>;
> +
> + 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>;
> + };
> + };
> + };
> + };
> };
>
> --
> 2.47.3
>
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