linux-kernel - [PATCH 1/2] media: dt-bindings: Add CSI Pixel Formatter DT bindings

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Message-Id: <20251203-csi_formatter-v1-1-eb9e1147b49e@nxp.com>
Date: Wed, 03 Dec 2025 14:30:02 +0800
From: Guoniu Zhou <guoniu.zhou@....nxp.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Rob Herring <robh@...nel.org>, 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>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Frank Li <frank.li@....com>
Cc: imx@...ts.linux.dev, linux-media@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Guoniu Zhou <guoniu.zhou@....com>
Subject: [PATCH 1/2] media: dt-bindings: Add CSI Pixel Formatter DT
 bindings

From: Guoniu Zhou <guoniu.zhou@....com>

The i.MX9 CSI pixel formatting module uses packet info, pixel and
non-pixel data from the CSI-2 host controller and reformat them to
match Pixel Link(PL) definition.

Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
---
 .../bindings/media/nxp,imx9-csi-formatter.yaml     | 96 ++++++++++++++++++++++
 1 file changed, 96 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml b/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..c992a2a225519d3b7934f48cf1646d2cd7089319
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/nxp,imx9-csi-formatter.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/nxp,imx9-csi-formatter.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: i.MX9 CSI Pixel Formatter
+
+maintainers:
+  - Guoniu Zhou <guoniu.zhou@....com>
+
+description: |
+  The CSI pixel formatting module uses packet info, pixel and non-pixel
+  data from the CSI-2 host controller and reformat them to match Pixel
+  Link(PL) definition.
+
+properties:
+  compatible:
+    const: fsl,imx9-csi-formatter
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description: MIPI CSI-2 RX IDI interface
+
+        properties:
+          endpoint:
+            $ref: video-interfaces.yaml#
+            unevaluatedProperties: false
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Pixel Link Interface
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - power-domains
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/nxp,imx95-clock.h>
+
+    /*
+     * Power domain definitions from arch/arm64/boot/dts/freescale/imx95-power.h
+     */
+
+    #define IMX95_PD_CAMERA		3
+
+    formatter@20 {
+        compatible = "fsl,imx9-csi-formatter";
+        reg = <0x20 0x100>;
+        clocks = <&cameramix_csr IMX95_CLK_CAMBLK_CSI2_FOR0>;
+        clock-names = "pixel";
+        power-domains = <&scmi_devpd IMX95_PD_CAMERA>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                formatter_in: endpoint {
+                    remote-endpoint = <&mipi_csi_0_out>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+                formatter_out: endpoint {
+                    remote-endpoint = <&isi_in_2>;
+                };
+            };
+        };
+    };

-- 
2.34.1