dt-bindings: display: convert rockchip vop bindings to yaml

Current dts files with 'vop' nodes are manually verified.
In order to automate this process rockchip-vop.txt
has to be converted to yaml.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200403142235.8870-1-jbx6244@gmail.com

Documentation/devicetree/bindings/display/rockchip/rockchip-vop.txt

-device-tree bindings for rockchip soc display controller (vop)
-
-VOP (Visual Output Processor) is the Display Controller for the Rockchip
-series of SoCs which transfers the image data from a video memory
-buffer to an external LCD interface.
-
-Required properties:
-- compatible: value should be one of the following
-		"rockchip,rk3036-vop";
-		"rockchip,rk3126-vop";
-		"rockchip,px30-vop-lit";
-		"rockchip,px30-vop-big";
-		"rockchip,rk3066-vop";
-		"rockchip,rk3188-vop";
-		"rockchip,rk3288-vop";
-		"rockchip,rk3368-vop";
-		"rockchip,rk3366-vop";
-		"rockchip,rk3399-vop-big";
-		"rockchip,rk3399-vop-lit";
-		"rockchip,rk3228-vop";
-		"rockchip,rk3328-vop";
-
-- reg: Must contain one entry corresponding to the base address and length
-	of the register space. Can optionally contain a second entry
-	corresponding to the CRTC gamma LUT address.
-
-- interrupts: should contain a list of all VOP IP block interrupts in the
-		 order: VSYNC, LCD_SYSTEM. The interrupt specifier
-		 format depends on the interrupt controller used.
-
-- clocks: must include clock specifiers corresponding to entries in the
-		clock-names property.
-
-- clock-names: Must contain
-		aclk_vop: for ddr buffer transfer.
-		hclk_vop: for ahb bus to R/W the phy regs.
-		dclk_vop: pixel clock.
-
-- resets: Must contain an entry for each entry in reset-names.
-  See ../reset/reset.txt for details.
-- reset-names: Must include the following entries:
-  - axi
-  - ahb
-  - dclk
-
-- iommus: required a iommu node
-
-- port: A port node with endpoint definitions as defined in
-  Documentation/devicetree/bindings/media/video-interfaces.txt.
-
-Example:
-SoC specific DT entry:
-	vopb: vopb@ff930000 {
-		compatible = "rockchip,rk3288-vop";
-		reg = <0x0 0xff930000 0x0 0x19c>, <0x0 0xff931000 0x0 0x1000>;
-		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&cru ACLK_VOP0>, <&cru DCLK_VOP0>, <&cru HCLK_VOP0>;
-		clock-names = "aclk_vop", "dclk_vop", "hclk_vop";
-		resets = <&cru SRST_LCDC1_AXI>, <&cru SRST_LCDC1_AHB>, <&cru SRST_LCDC1_DCLK>;
-		reset-names = "axi", "ahb", "dclk";
-		iommus = <&vopb_mmu>;
-		vopb_out: port {
-			#address-cells = <1>;
-			#size-cells = <0>;
-			vopb_out_edp: endpoint@0 {
-				reg = <0>;
-				remote-endpoint=<&edp_in_vopb>;
-			};
-			vopb_out_hdmi: endpoint@1 {
-				reg = <1>;
-				remote-endpoint=<&hdmi_in_vopb>;
-			};
-		};
-	};

Documentation/devicetree/bindings/display/rockchip/rockchip-vop.yaml

+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/rockchip/rockchip-vop.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip SoC display controller (VOP)
+
+description:
+  VOP (Video Output Processor) is the display controller for the Rockchip
+  series of SoCs which transfers the image data from a video memory
+  buffer to an external LCD interface.
+
+maintainers:
+  - Sandy Huang <hjc@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,px30-vop-big
+      - rockchip,px30-vop-lit
+      - rockchip,rk3036-vop
+      - rockchip,rk3066-vop
+      - rockchip,rk3126-vop
+      - rockchip,rk3188-vop
+      - rockchip,rk3228-vop
+      - rockchip,rk3288-vop
+      - rockchip,rk3328-vop
+      - rockchip,rk3366-vop
+      - rockchip,rk3368-vop
+      - rockchip,rk3399-vop-big
+      - rockchip,rk3399-vop-lit
+
+  reg:
+    minItems: 1
+    items:
+      - description:
+          Must contain one entry corresponding to the base address and length
+          of the register space.
+      - description:
+          Can optionally contain a second entry corresponding to
+          the CRTC gamma LUT address.
+
+  interrupts:
+    maxItems: 1
+    description:
+      The VOP interrupt is shared by several interrupt sources, such as
+      frame start (VSYNC), line flag and other status interrupts.
+
+  clocks:
+    items:
+      - description: Clock for ddr buffer transfer.
+      - description: Pixel clock.
+      - description: Clock for the ahb bus to R/W the phy regs.
+
+  clock-names:
+    items:
+      - const: aclk_vop
+      - const: dclk_vop
+      - const: hclk_vop
+
+  resets:
+    maxItems: 3
+
+  reset-names:
+    items:
+      - const: axi
+      - const: ahb
+      - const: dclk
+
+  port:
+    type: object
+    description:
+      A port node with endpoint definitions as defined in
+      Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+  iommus:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3288-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    vopb: vopb@ff930000 {
+      compatible = "rockchip,rk3288-vop";
+      reg = <0x0 0xff930000 0x0 0x19c>,
+            <0x0 0xff931000 0x0 0x1000>;
+      interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&cru ACLK_VOP0>,
+               <&cru DCLK_VOP0>,
+               <&cru HCLK_VOP0>;
+      clock-names = "aclk_vop", "dclk_vop", "hclk_vop";
+      resets = <&cru SRST_LCDC1_AXI>,
+               <&cru SRST_LCDC1_AHB>,
+               <&cru SRST_LCDC1_DCLK>;
+      reset-names = "axi", "ahb", "dclk";
+      iommus = <&vopb_mmu>;
+      vopb_out: port {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        vopb_out_edp: endpoint@0 {
+          reg = <0>;
+          remote-endpoint=<&edp_in_vopb>;
+        };
+        vopb_out_hdmi: endpoint@1 {
+          reg = <1>;
+          remote-endpoint=<&hdmi_in_vopb>;
+        };
+      };
+    };