[PATCH v3] dt-bindings: media: st,stmipid02: Convert the text bindings to YAML

[Marek Vasut <marex@denx.de>]

Convert the text STMIPID02 DT bindings to YAML DT format to permit
validation of DTs using this I2C CSI-2 to CPI bridge.

Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sylvain Petinot <sylvain.petinot@foss.st.com>
Cc: devicetree@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
---
V2: - Update YAML DT schema maintainers, add Benjamin and Sylvain, drop myself
    - Update MAINTAINERS file, replace st,st-mipid02.txt to st,st-mipid02.yaml
    - Fix bus-width to be 6,7,8,10,12 and drop default:
    - Require port@2 and either or both port@0 or port@1
V3: - Add RB from Benjamin
    - Fix lane-polarity property name to lane-polarities
    - Fill in newlines
    - Replace clock-names: subnodes with plain "const: xclk"
---
 .../bindings/media/i2c/st,st-mipid02.txt      |  82 --------
 .../bindings/media/i2c/st,st-mipid02.yaml     | 176 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 3 files changed, 177 insertions(+), 83 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt
 create mode 100644 Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt b/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt
deleted file mode 100644
index 7976e6c40a80a..0000000000000
--- a/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt
+++ /dev/null
@@ -1,82 +0,0 @@
-STMicroelectronics MIPID02 CSI-2 to PARALLEL bridge
-
-MIPID02 has two CSI-2 input ports, only one of those ports can be active at a
-time. Active port input stream will be de-serialized and its content outputted
-through PARALLEL output port.
-CSI-2 first input port is a dual lane 800Mbps per lane whereas CSI-2 second
-input port is a single lane 800Mbps. Both ports support clock and data lane
-polarity swap. First port also supports data lane swap.
-PARALLEL output port has a maximum width of 12 bits.
-Supported formats are RAW6, RAW7, RAW8, RAW10, RAW12, RGB565, RGB888, RGB444,
-YUV420 8-bit, YUV422 8-bit and YUV420 10-bit.
-
-Required Properties:
-- compatible: shall be "st,st-mipid02"
-- clocks: reference to the xclk input clock.
-- clock-names: shall be "xclk".
-- VDDE-supply: sensor digital IO supply. Must be 1.8 volts.
-- VDDIN-supply: sensor internal regulator supply. Must be 1.8 volts.
-
-Optional Properties:
-- reset-gpios: reference to the GPIO connected to the xsdn pin, if any.
-	       This is an active low signal to the mipid02.
-
-Required subnodes:
-  - ports: A ports node with one port child node per device input and output
-	   port, in accordance with the video interface bindings defined in
-	   Documentation/devicetree/bindings/media/video-interfaces.txt. The
-	   port nodes are numbered as follows:
-
-	   Port Description
-	   -----------------------------
-	   0    CSI-2 first input port
-	   1    CSI-2 second input port
-	   2    PARALLEL output
-
-Endpoint node required property for CSI-2 connection is:
-- data-lanes: shall be <1> for Port 1. for Port 0 dual-lane operation shall be
-<1 2> or <2 1>. For Port 0 single-lane operation shall be <1> or <2>.
-Endpoint node optional property for CSI-2 connection is:
-- lane-polarities: any lane can be inverted or not.
-
-Endpoint node required property for PARALLEL connection is:
-- bus-width: shall be set to <6>, <7>, <8>, <10> or <12>.
-Endpoint node optional properties for PARALLEL connection are:
-- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
-LOW being the default.
-- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
-LOW being the default.
-
-Example:
-
-mipid02: csi2rx@14 {
-	compatible = "st,st-mipid02";
-	reg = <0x14>;
-	status = "okay";
-	clocks = <&clk_ext_camera_12>;
-	clock-names = "xclk";
-	VDDE-supply = <&vdd>;
-	VDDIN-supply = <&vdd>;
-	ports {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		port@0 {
-			reg = <0>;
-
-			ep0: endpoint {
-				data-lanes = <1 2>;
-				remote-endpoint = <&mipi_csi2_in>;
-			};
-		};
-		port@2 {
-			reg = <2>;
-
-			ep2: endpoint {
-				bus-width = <8>;
-				hsync-active = <0>;
-				vsync-active = <0>;
-				remote-endpoint = <&parallel_out>;
-			};
-		};
-	};
-};
diff --git a/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml b/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml
new file mode 100644
index 0000000000000..19a39d753aade
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml
@@ -0,0 +1,176 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/st,st-mipid02.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics MIPID02 CSI-2 to PARALLEL bridge
+
+maintainers:
+  - Benjamin Mugnier <benjamin.mugnier@foss.st.com>
+  - Sylvain Petinot <sylvain.petinot@foss.st.com>
+
+description:
+  MIPID02 has two CSI-2 input ports, only one of those ports can be
+  active at a time. Active port input stream will be de-serialized
+  and its content outputted through PARALLEL output port.
+  CSI-2 first input port is a dual lane 800Mbps per lane whereas CSI-2
+  second input port is a single lane 800Mbps. Both ports support clock
+  and data lane polarity swap. First port also supports data lane swap.
+  PARALLEL output port has a maximum width of 12 bits.
+  Supported formats are RAW6, RAW7, RAW8, RAW10, RAW12, RGB565, RGB888,
+  RGB444, YUV420 8-bit, YUV422 8-bit and YUV420 10-bit.
+
+properties:
+  compatible:
+    const: st,st-mipid02
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: xclk
+
+  VDDE-supply:
+    description:
+      Sensor digital IO supply. Must be 1.8 volts.
+
+  VDDIN-supply:
+    description:
+      Sensor internal regulator supply. Must be 1.8 volts.
+
+  reset-gpios:
+    description:
+      Reference to the GPIO connected to the xsdn pin, if any.
+      This is an active low signal to the mipid02.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description: CSI-2 first input port
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description:
+                  Single-lane operation shall be <1> or <2> .
+                  Dual-lane operation shall be <1 2> or <2 1> .
+                minItems: 1
+                maxItems: 2
+
+              lane-polarities:
+                description:
+                  Any lane can be inverted or not.
+                minItems: 1
+                maxItems: 2
+
+            required:
+              - data-lanes
+
+      port@1:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description: CSI-2 second input port
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description:
+                  Single-lane operation shall be <1> or <2> .
+                maxItems: 1
+
+              lane-polarities:
+                description:
+                  Any lane can be inverted or not.
+                maxItems: 1
+
+            required:
+              - data-lanes
+
+      port@2:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description: Output port
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              bus-width:
+                enum: [6, 7, 8, 10, 12]
+
+            required:
+              - bus-width
+
+    anyOf:
+      - required:
+          - port@0
+      - required:
+          - port@1
+
+    required:
+      - port@2
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - VDDE-supply
+  - VDDIN-supply
+  - ports
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        mipid02: csi2rx@14 {
+            compatible = "st,st-mipid02";
+            reg = <0x14>;
+            status = "okay";
+            clocks = <&clk_ext_camera_12>;
+            clock-names = "xclk";
+            VDDE-supply = <&vdd>;
+            VDDIN-supply = <&vdd>;
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                port@0 {
+                    reg = <0>;
+
+                    ep0: endpoint {
+                        data-lanes = <1 2>;
+                        remote-endpoint = <&mipi_csi2_in>;
+                    };
+                };
+                port@2 {
+                    reg = <2>;
+
+                    ep2: endpoint {
+                        bus-width = <8>;
+                        hsync-active = <0>;
+                        vsync-active = <0>;
+                        remote-endpoint = <&parallel_out>;
+                    };
+                };
+            };
+        };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 3f7082a08ac4c..5e19c109eeb37 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19444,7 +19444,7 @@ M:	Sylvain Petinot <sylvain.petinot@foss.st.com>
 L:	linux-media@vger.kernel.org
 S:	Maintained
 T:	git git://linuxtv.org/media_tree.git
-F:	Documentation/devicetree/bindings/media/i2c/st,st-mipid02.txt
+F:	Documentation/devicetree/bindings/media/i2c/st,st-mipid02.yaml
 F:	drivers/media/i2c/st-mipid02.c
 
 ST STM32 I2C/SMBUS DRIVER
-- 
2.35.1