xref: /linux/Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml (revision 79790b6818e96c58fe2bffee1b418c16e64e7b80) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/media/i2c/techwell,tw9900.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Techwell TW9900 NTSC/PAL video decoder
8
9maintainers:
10  - Mehdi Djait <mehdi.djait@bootlin.com>
11
12description:
13  The tw9900 is a multi-standard video decoder, supporting NTSC, PAL standards
14  with auto-detection features.
15
16properties:
17  compatible:
18    const: techwell,tw9900
19
20  reg:
21    maxItems: 1
22
23  vdd-supply:
24    description: VDD power supply
25
26  reset-gpios:
27    description: GPIO descriptor for the RESET input pin
28    maxItems: 1
29
30  powerdown-gpios:
31    description: GPIO descriptor for the POWERDOWN input pin
32    maxItems: 1
33
34  ports:
35    $ref: /schemas/graph.yaml#/properties/ports
36
37    properties:
38      port@0:
39        $ref: /schemas/graph.yaml#/properties/port
40        description: Analog input port
41
42        properties:
43          endpoint@0:
44            $ref: /schemas/graph.yaml#/properties/endpoint
45            description: CVBS over MUX0
46
47          endpoint@1:
48            $ref: /schemas/graph.yaml#/properties/endpoint
49            description: CVBS over MUX1
50
51          endpoint@2:
52            $ref: /schemas/graph.yaml#/properties/endpoint
53            description: Chroma over CIN0 and Y over MUX0
54
55          endpoint@3:
56            $ref: /schemas/graph.yaml#/properties/endpoint
57            description: Chroma over CIN0 and Y over MUX1
58
59        oneOf:
60          - required:
61              - endpoint@0
62          - required:
63              - endpoint@1
64          - required:
65              - endpoint@2
66          - required:
67              - endpoint@3
68
69      port@1:
70        $ref: /schemas/graph.yaml#/properties/port
71        description: Video port for the decoder output.
72
73
74    required:
75      - port@0
76      - port@1
77
78required:
79  - compatible
80  - ports
81  - reg
82  - vdd-supply
83
84additionalProperties: false
85
86examples:
87  - |
88    #include <dt-bindings/display/sdtv-standards.h>
89    #include <dt-bindings/gpio/gpio.h>
90
91    composite_connector {
92        compatible = "composite-video-connector";
93        label = "tv";
94        sdtv-standards = <(SDTV_STD_PAL | SDTV_STD_NTSC)>;
95
96        port {
97            composite_to_tw9900: endpoint {
98                remote-endpoint = <&tw9900_to_composite>;
99            };
100        };
101    };
102
103    i2c {
104        #address-cells = <1>;
105        #size-cells = <0>;
106
107        video-decoder@44 {
108            compatible = "techwell,tw9900";
109            reg = <0x44>;
110
111            vdd-supply = <&tw9900_supply>;
112            reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
113
114            ports {
115                #address-cells = <1>;
116                #size-cells = <0>;
117
118                port@0 {
119                    #address-cells = <1>;
120                    #size-cells = <0>;
121
122                    reg = <0>;
123                    tw9900_to_composite: endpoint@0 {
124                        reg = <0>;
125                        remote-endpoint = <&composite_to_tw9900>;
126                    };
127                };
128
129                port@1 {
130                    reg = <1>;
131                    endpoint {
132                        remote-endpoint = <&cif_in>;
133                    };
134                };
135            };
136        };
137    };
138