xref: /freebsd/sys/contrib/device-tree/Bindings/display/bridge/google,cros-ec-anx7688.yaml (revision d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/bridge/google,cros-ec-anx7688.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: ChromeOS EC ANX7688 HDMI to DP Converter through Type-C Port
8
9maintainers:
10  - Nicolas Boichat <drinkcat@chromium.org>
11
12description: |
13  ChromeOS EC ANX7688 is a display bridge that converts HDMI 2.0 to
14  DisplayPort 1.3 Ultra-HDi (4096x2160p60). It is an Analogix ANX7688 chip
15  which is connected to and operated by the ChromeOS Embedded Controller
16  (See google,cros-ec.yaml). It is accessed using I2C tunneling through
17  the EC and therefore its node should be a child of an EC I2C tunnel node
18  (See google,cros-ec-i2c-tunnel.yaml).
19
20properties:
21  compatible:
22    const: google,cros-ec-anx7688
23
24  reg:
25    maxItems: 1
26    description: I2C address of the device.
27
28  ports:
29    $ref: /schemas/graph.yaml#/properties/ports
30
31    properties:
32      port@0:
33        $ref: /schemas/graph.yaml#/properties/port
34        description: Video port for HDMI input.
35
36      port@1:
37        $ref: /schemas/graph.yaml#/properties/port
38        description: USB Type-c connector.
39
40    required:
41      - port@0
42      - port@1
43
44required:
45  - compatible
46  - reg
47  - ports
48
49additionalProperties: false
50
51examples:
52  - |
53    i2c_tunnel_b: i2c-tunnel1 {
54        compatible = "google,cros-ec-i2c-tunnel";
55        google,remote-bus = <1>;
56        #address-cells = <1>;
57        #size-cells = <0>;
58
59        anx7688: anx7688@2c {
60            compatible = "google,cros-ec-anx7688";
61            reg = <0x2c>;
62
63            ports {
64                #address-cells = <1>;
65                #size-cells = <0>;
66                port@0 {
67                    reg = <0>;
68                    anx7688_in: endpoint {
69                        remote-endpoint = <&hdmi0_out>;
70                    };
71                };
72                port@1 {
73                    reg = <1>;
74                    anx7688_out: endpoint {
75                        remote-endpoint = <&typec_connector>;
76                    };
77                };
78            };
79        };
80    };
81