0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-frontend.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Allwinner A10 Display Engine Frontend Device Tree Bindings
0008
0009 maintainers:
0010 - Chen-Yu Tsai <wens@csie.org>
0011 - Maxime Ripard <mripard@kernel.org>
0012
0013 description: |
0014 The display engine frontend does formats conversion, scaling,
0015 deinterlacing and color space conversion.
0016
0017 properties:
0018 compatible:
0019 enum:
0020 - allwinner,sun4i-a10-display-frontend
0021 - allwinner,sun5i-a13-display-frontend
0022 - allwinner,sun6i-a31-display-frontend
0023 - allwinner,sun7i-a20-display-frontend
0024 - allwinner,sun8i-a23-display-frontend
0025 - allwinner,sun8i-a33-display-frontend
0026 - allwinner,sun9i-a80-display-frontend
0027
0028 reg:
0029 maxItems: 1
0030
0031 interrupts:
0032 maxItems: 1
0033
0034 clocks:
0035 items:
0036 - description: The frontend interface clock
0037 - description: The frontend module clock
0038 - description: The frontend DRAM clock
0039
0040 clock-names:
0041 items:
0042 - const: ahb
0043 - const: mod
0044 - const: ram
0045
0046 # FIXME: This should be made required eventually once every SoC will
0047 # have the MBUS declared.
0048 interconnects:
0049 maxItems: 1
0050
0051 # FIXME: This should be made required eventually once every SoC will
0052 # have the MBUS declared.
0053 interconnect-names:
0054 const: dma-mem
0055
0056 resets:
0057 maxItems: 1
0058
0059 ports:
0060 $ref: /schemas/graph.yaml#/properties/ports
0061
0062 properties:
0063 port@0:
0064 $ref: /schemas/graph.yaml#/properties/port
0065 description: |
0066 Input endpoints of the controller.
0067
0068 port@1:
0069 $ref: /schemas/graph.yaml#/properties/port
0070 description: |
0071 Output endpoints of the controller.
0072
0073 required:
0074 - port@1
0075
0076 required:
0077 - compatible
0078 - reg
0079 - interrupts
0080 - clocks
0081 - clock-names
0082 - resets
0083 - ports
0084
0085 additionalProperties: false
0086
0087 examples:
0088 - |
0089 #include <dt-bindings/clock/sun4i-a10-ccu.h>
0090 #include <dt-bindings/reset/sun4i-a10-ccu.h>
0091
0092 fe0: display-frontend@1e00000 {
0093 compatible = "allwinner,sun4i-a10-display-frontend";
0094 reg = <0x01e00000 0x20000>;
0095 interrupts = <47>;
0096 clocks = <&ccu CLK_AHB_DE_FE0>, <&ccu CLK_DE_FE0>,
0097 <&ccu CLK_DRAM_DE_FE0>;
0098 clock-names = "ahb", "mod",
0099 "ram";
0100 resets = <&ccu RST_DE_FE0>;
0101
0102 ports {
0103 #address-cells = <1>;
0104 #size-cells = <0>;
0105
0106 fe0_out: port@1 {
0107 #address-cells = <1>;
0108 #size-cells = <0>;
0109 reg = <1>;
0110
0111 fe0_out_be0: endpoint@0 {
0112 reg = <0>;
0113 remote-endpoint = <&be0_in_fe0>;
0114 };
0115
0116 fe0_out_be1: endpoint@1 {
0117 reg = <1>;
0118 remote-endpoint = <&be1_in_fe0>;
0119 };
0120 };
0121 };
0122 };
0123
0124
0125 ...
