xref: /linux/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml (revision db5d28c0bfe566908719bec8e25443aabecbb802) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/bridge/ite,it6505.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: ITE it6505
8
9maintainers:
10  - Allen Chen <allen.chen@ite.com.tw>
11
12allOf:
13  - $ref: /schemas/sound/dai-common.yaml#
14
15description: |
16  The IT6505 is a high-performance DisplayPort 1.1a transmitter,
17  fully compliant with DisplayPort 1.1a, HDCP 1.3 specifications.
18  The IT6505 supports color depth of up to 36 bits (12 bits/color)
19  and ensures robust transmission of high-quality uncompressed video
20  content, along with uncompressed and compressed digital audio content.
21
22  Aside from the various video output formats supported, the IT6505
23  also encodes and transmits up to 8 channels of I2S digital audio,
24  with sampling rate up to 192kHz and sample size up to 24 bits.
25  In addition, an S/PDIF input port takes in compressed audio of up to
26  192kHz frame rate.
27
28  Each IT6505 chip comes preprogrammed with an unique HDCP key,
29  in compliance with the HDCP 1.3 standard so as to provide secure
30  transmission of high-definition content. Users of the IT6505 need not
31  purchase any HDCP keys or ROMs.
32
33properties:
34  compatible:
35    const: ite,it6505
36
37  reg:
38    maxItems: 1
39
40  ovdd-supply:
41    description: I/O voltage
42
43  pwr18-supply:
44    description: core voltage
45
46  interrupts:
47    maxItems: 1
48    description: interrupt specifier of INT pin
49
50  reset-gpios:
51    maxItems: 1
52    description: gpio specifier of RESET pin
53
54  extcon:
55    maxItems: 1
56    description: extcon specifier for the Power Delivery
57
58  "#sound-dai-cells":
59    const: 0
60
61  ports:
62    $ref: /schemas/graph.yaml#/properties/ports
63
64    properties:
65      port@0:
66        $ref: /schemas/graph.yaml#/$defs/port-base
67        unevaluatedProperties: false
68        description: A port node pointing to DPI host port node
69
70        properties:
71          endpoint:
72            $ref: /schemas/graph.yaml#/$defs/endpoint-base
73            unevaluatedProperties: false
74
75            properties:
76              link-frequencies:
77                minItems: 1
78                maxItems: 1
79                description: Allowed max link frequencies in Hz
80
81      port@1:
82        $ref: /schemas/graph.yaml#/$defs/port-base
83        unevaluatedProperties: false
84        description: Video port for DP output
85
86        properties:
87          endpoint:
88            $ref: /schemas/graph.yaml#/$defs/endpoint-base
89            unevaluatedProperties: false
90
91            properties:
92              data-lanes:
93                minItems: 1
94                uniqueItems: true
95                items:
96                  - enum: [ 0, 1 ]
97                  - const: 1
98                  - const: 2
99                  - const: 3
100
101    required:
102      - port@0
103      - port@1
104
105required:
106  - compatible
107  - ovdd-supply
108  - pwr18-supply
109  - interrupts
110  - reset-gpios
111  - extcon
112  - ports
113
114unevaluatedProperties: false
115
116examples:
117  - |
118    #include <dt-bindings/interrupt-controller/irq.h>
119
120    i2c {
121        #address-cells = <1>;
122        #size-cells = <0>;
123
124        dp-bridge@5c {
125            compatible = "ite,it6505";
126            interrupts = <152 IRQ_TYPE_EDGE_FALLING 152 0>;
127            reg = <0x5c>;
128            pinctrl-names = "default";
129            pinctrl-0 = <&it6505_pins>;
130            ovdd-supply = <&mt6358_vsim1_reg>;
131            pwr18-supply = <&it6505_pp18_reg>;
132            reset-gpios = <&pio 179 1>;
133            extcon = <&usbc_extcon>;
134
135            ports {
136                #address-cells = <1>;
137                #size-cells = <0>;
138
139                port@0 {
140                    reg = <0>;
141                    it6505_in: endpoint {
142                        remote-endpoint = <&dpi_out>;
143                        link-frequencies = /bits/ 64 <150000000>;
144                    };
145                };
146
147                port@1 {
148                    reg = <1>;
149                    it6505_out: endpoint {
150                        remote-endpoint = <&dp_in>;
151                        data-lanes = <0 1>;
152                    };
153                };
154            };
155        };
156    };
157