xref: /linux/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml (revision de80193308f43d3ae52cd3561e8ba77cd1437311) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/media/i2c/toshiba,tc358746.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Toshiba TC358746 Parallel to MIPI CSI2 Bridge
8
9maintainers:
10  - Marco Felsch <kernel@pengutronix.de>
11
12description: |-
13  The Toshiba TC358746 converts a parallel video stream into a MIPI CSI-2
14  stream. The direction can be either parallel-in -> csi-out or csi-in ->
15  parallel-out The chip is programmable through I2C and SPI but the SPI
16  interface is only supported in parallel-in -> csi-out mode.
17
18  Note that the current device tree bindings only support the
19  parallel-in -> csi-out path.
20
21properties:
22  compatible:
23    const: toshiba,tc358746
24
25  reg:
26    maxItems: 1
27
28  clocks:
29    description:
30      The phandle to the reference clock source. This corresponds to the
31      hardware pin REFCLK.
32    maxItems: 1
33
34  clock-names:
35    const: refclk
36
37  "#clock-cells":
38    description: |
39      The bridge can act as clock provider for the sensor. To enable this
40      support #clock-cells must be specified. Attention if this feature is used
41      then the mclk rate must be at least: (2 * link-frequency) / 8
42                                           `------------------´   ^
43                                           internal PLL rate   smallest possible
44                                                                   mclk-div
45    const: 0
46
47  clock-output-names:
48    description:
49      The clock name of the MCLK output, the default name is tc358746-mclk.
50    maxItems: 1
51
52  vddc-supply:
53    description: Digital core voltage supply, 1.2 volts
54
55  vddio-supply:
56    description: Digital I/O voltage supply, 1.8 volts
57
58  vddmipi-supply:
59    description: MIPI CSI phy voltage supply, 1.2 volts
60
61  reset-gpios:
62    description:
63      The phandle and specifier for the GPIO that controls the chip reset.
64      This corresponds to the hardware pin RESX which is physically active low.
65    maxItems: 1
66
67  ports:
68    $ref: /schemas/graph.yaml#/properties/ports
69    properties:
70      port@0:
71        $ref: /schemas/graph.yaml#/$defs/port-base
72        description: Input port
73
74        properties:
75          endpoint:
76            $ref: /schemas/media/video-interfaces.yaml#
77            unevaluatedProperties: false
78
79            properties:
80              hsync-active: true
81              vsync-active: true
82              bus-type:
83                enum: [ 5, 6 ]
84
85            required:
86              - hsync-active
87              - vsync-active
88              - bus-type
89
90      port@1:
91        $ref: /schemas/graph.yaml#/$defs/port-base
92        description: Output port
93
94        properties:
95          endpoint:
96            $ref: /schemas/media/video-interfaces.yaml#
97            unevaluatedProperties: false
98
99            properties:
100              data-lanes:
101                minItems: 1
102                maxItems: 4
103
104              clock-noncontinuous: true
105              link-frequencies: true
106
107            required:
108              - data-lanes
109              - link-frequencies
110
111    required:
112      - port@0
113      - port@1
114
115required:
116  - compatible
117  - reg
118  - clocks
119  - clock-names
120  - vddc-supply
121  - vddio-supply
122  - vddmipi-supply
123  - ports
124
125additionalProperties: false
126
127examples:
128  - |
129    #include <dt-bindings/gpio/gpio.h>
130
131    i2c {
132      #address-cells = <1>;
133      #size-cells = <0>;
134
135      csi-bridge@e {
136        compatible = "toshiba,tc358746";
137        reg = <0xe>;
138
139        clocks = <&refclk>;
140        clock-names = "refclk";
141
142        reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
143
144        vddc-supply = <&v1_2d>;
145        vddio-supply = <&v1_8d>;
146        vddmipi-supply = <&v1_2d>;
147
148        /* sensor mclk provider */
149        #clock-cells = <0>;
150
151        ports {
152          #address-cells = <1>;
153          #size-cells = <0>;
154
155          /* Input */
156          port@0 {
157            reg = <0>;
158            tc358746_in: endpoint {
159              remote-endpoint = <&sensor_out>;
160              hsync-active = <0>;
161              vsync-active = <0>;
162              bus-type = <5>;
163            };
164          };
165
166          /* Output */
167          port@1 {
168            reg = <1>;
169            tc358746_out: endpoint {
170              remote-endpoint = <&mipi_csi2_in>;
171              data-lanes = <1 2>;
172              clock-noncontinuous;
173              link-frequencies = /bits/ 64 <216000000>;
174            };
175          };
176        };
177      };
178    };
179