xref: /linux/Documentation/devicetree/bindings/media/i2c/maxim,max96712.yaml (revision cdd5b5a9761fd66d17586e4f4ba6588c70e640ea) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2021 Renesas Electronics Corp.
3%YAML 1.2
4---
5$id: http://devicetree.org/schemas/media/i2c/maxim,max96712.yaml#
6$schema: http://devicetree.org/meta-schemas/core.yaml#
7
8title: Quad GMSL2 to CSI-2 Deserializer with GMSL1 Compatibility
9
10maintainers:
11  - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
12
13description: |
14  The MAX96712 deserializer converts GMSL2 or GMSL1 serial inputs into MIPI
15  CSI-2 D-PHY or C-PHY formatted outputs. The device allows each link to
16  simultaneously transmit bidirectional control-channel data while forward
17  video transmissions are in progress. The MAX96712 can accommodate as many as
18  four remotely located sensors using industry-standard coax or STP
19  interconnects.
20
21  Each GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the
22  forward direction and 187.5Mbps in the reverse direction. In GMSL1 mode, the
23  MAX96712 can be paired with first-generation 3.12Gbps or 1.5Gbps GMSL1
24  serializers or operate up to 3.12Gbps with GMSL2 serializers in GMSL1 mode.
25
26properties:
27  compatible:
28    const: maxim,max96712
29
30  reg:
31    description: I2C device address
32    maxItems: 1
33
34  enable-gpios: true
35
36  ports:
37    $ref: /schemas/graph.yaml#/properties/ports
38
39    properties:
40      port@0:
41        $ref: /schemas/graph.yaml#/properties/port
42        description: GMSL Input 0
43
44      port@1:
45        $ref: /schemas/graph.yaml#/properties/port
46        description: GMSL Input 1
47
48      port@2:
49        $ref: /schemas/graph.yaml#/properties/port
50        description: GMSL Input 2
51
52      port@3:
53        $ref: /schemas/graph.yaml#/properties/port
54        description: GMSL Input 3
55
56      port@4:
57        $ref: /schemas/graph.yaml#/$defs/port-base
58        unevaluatedProperties: false
59        description: CSI-2 Output
60
61        properties:
62          endpoint:
63            $ref: /schemas/media/video-interfaces.yaml#
64            unevaluatedProperties: false
65
66            properties:
67              data-lanes: true
68              bus-type:
69                enum:
70                  - 1 # MEDIA_BUS_TYPE_CSI2_CPHY
71                  - 4 # MEDIA_BUS_TYPE_CSI2_DPHY
72
73            required:
74              - data-lanes
75              - bus-type
76
77    required:
78      - port@4
79
80required:
81  - compatible
82  - reg
83  - ports
84
85additionalProperties: false
86
87examples:
88  - |
89    #include <dt-bindings/gpio/gpio.h>
90    #include <dt-bindings/media/video-interfaces.h>
91
92    i2c@e6508000 {
93            #address-cells = <1>;
94            #size-cells = <0>;
95
96            reg = <0 0xe6508000>;
97
98            gmsl0: gmsl-deserializer@49 {
99                    compatible = "maxim,max96712";
100                    reg = <0x49>;
101                    enable-gpios = <&pca9654_a 0 GPIO_ACTIVE_HIGH>;
102
103                    ports {
104                            #address-cells = <1>;
105                            #size-cells = <0>;
106
107                            port@4 {
108                                    reg = <4>;
109                                    max96712_out0: endpoint {
110                                            bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
111                                            clock-lanes = <0>;
112                                            data-lanes = <1 2 3 4>;
113                                            remote-endpoint = <&csi40_in>;
114                                    };
115                            };
116                    };
117            };
118    };
119