[PATCH v2 5/9] dt-bindings: media: Convert marvell,mmp2-ccic to json-schema

[Lubomir Rintel]

Convert the marvell,mmp2-ccic binding to DT schema format using
json-schema. While at that this drops the "func" and "phy" clocks.

The driver consumes clocks with those names, but it's not clear
what are they for and they are not used in DT systems. "phy" is
probably a clock for the sensor and it would belong in the sensor
node.

Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>

---
Changes since v1:
- Fix indentation
- Drop clocks other than "axi"
- s/GPL-2.0-or-later/GPL-2.0-only/

 .../bindings/media/marvell,mmp2-ccic.txt      | 50 ----------
 .../bindings/media/marvell,mmp2-ccic.yaml     | 97 +++++++++++++++++++
 2 files changed, 97 insertions(+), 50 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
 create mode 100644 Documentation/devicetree/bindings/media/marvell,mmp2-ccic.yaml

diff --git a/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt b/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
deleted file mode 100644
index 7ec2c8c8a3b9..000000000000
--- a/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-Marvell MMP2 camera host interface
-
-Required properties:
- - compatible: Should be "marvell,mmp2-ccic".
- - reg: Register base and size.
- - interrupts: The interrupt number.
- - #clock-cells: Must be 0.
-
-Optional properties:
- - clocks: Reference to the input clock as specified by
-           Documentation/devicetree/bindings/clock/clock-bindings.txt.
- - clock-names: Names of the clocks used; "axi" for the AXI bus interface,
-                "func" for the peripheral clock and "phy" for the parallel
-                video bus interface.
- - clock-output-names: Optional clock source for sensors. Shall be "mclk".
-
-Required subnodes:
- - port: The parallel bus interface port with a single endpoint linked to
-         the sensor's endpoint as described in
-         Documentation/devicetree/bindings/media/video-interfaces.txt.
-
-Required endpoint properties:
- - bus-type: data bus type, <5> or <6> for Parallel or Bt.656 respectively
- - pclk-sample: pixel clock polarity
- - hsync-active: horizontal synchronization polarity (only required for
-   parallel bus)
- - vsync-active: vertical synchronization polarity (only required for
-   parallel bus)
-
-Example:
-
-	camera0: camera@d420a000 {
-		compatible = "marvell,mmp2-ccic";
-		reg = <0xd420a000 0x800>;
-		interrupts = <42>;
-		clocks = <&soc_clocks MMP2_CLK_CCIC0>;
-		clock-names = "axi";
-		#clock-cells = <0>;
-		clock-output-names = "mclk";
-
-		port {
-			camera0_0: endpoint {
-				remote-endpoint = <&ov7670_0>;
-                                bus-type = <5>;      /* Parallel */
-                                hsync-active = <1>;  /* Active high */
-                                vsync-active = <1>;  /* Active high */
-                                pclk-sample = <0>;   /* Falling */
-			};
-		};
-	};
diff --git a/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.yaml b/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.yaml
new file mode 100644
index 000000000000..fb399de668bb
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/marvell,mmp2-ccic.yaml
@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2019,2020 Lubomir Rintel <lkundrak@xxxxx>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/marvell,mmp2-ccic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell MMP2 camera host interface bindings
+
+maintainers:
+  - Lubomir Rintel <lkundrak@xxxxx>
+
+properties:
+  $nodename:
+    pattern: '^camera@[a-f0-9]+$'
+
+  compatible:
+    const: marvell,mmp2-ccic
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  port:
+    type: object
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        type: object
+        additionalProperties: false
+
+        # Properties described in
+        # Documentation/devicetree/bindings/media/video-interfaces.txt
+        properties:
+          remote-endpoint: true
+          hsync-active: true
+          vsync-active: true
+          pclk-sample: true
+          bus-type: true
+
+        required:
+          - remote-endpoint
+
+    required:
+      - endpoint
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+    items:
+      - description: AXI bus interface clock
+      - description: Peripheral clock
+      - description: Parallel video bus interface clock
+
+  clock-names:
+    const: axi
+
+  '#clock-cells':
+    const: 0
+
+  clock-output-names:
+    const: mclk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - port
+
+examples:
+  - |
+    #include <dt-bindings/clock/marvell,mmp2.h>
+
+    camera@d420a000 {
+      compatible = "marvell,mmp2-ccic";
+      reg = <0xd420a000 0x800>;
+      interrupts = <42>;
+      clocks = <&soc_clocks MMP2_CLK_CCIC0>;
+      clock-names = "axi";
+      #clock-cells = <0>;
+      clock-output-names = "mclk";
+
+      port {
+        camera0_0: endpoint {
+          remote-endpoint = <&ov7670_0>;
+          bus-type = <5>;      /* Parallel */
+          hsync-active = <1>;  /* Active high */
+          vsync-active = <1>;  /* Active high */
+          pclk-sample = <0>;   /* Falling */
+        };
+      };
+    };
+
+...
-- 
2.26.2