xref: /linux/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml (revision 2dc15ff73b6a7b47db0e848498cb5b0479e781c6) 
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        unevaluatedProperties: false
73        description: Input port
74
75        properties:
76          endpoint:
77            $ref: /schemas/media/video-interfaces.yaml#
78            unevaluatedProperties: false
79
80            properties:
81              hsync-active: true
82              vsync-active: true
83              bus-type:
84                enum: [ 5, 6 ]
85
86            required:
87              - hsync-active
88              - vsync-active
89              - bus-type
90
91      port@1:
92        $ref: /schemas/graph.yaml#/$defs/port-base
93        unevaluatedProperties: false
94        description: Output port
95
96        properties:
97          endpoint:
98            $ref: /schemas/media/video-interfaces.yaml#
99            unevaluatedProperties: false
100
101            properties:
102              data-lanes:
103                minItems: 1
104                maxItems: 4
105
106              clock-noncontinuous: true
107              link-frequencies: true
108
109            required:
110              - data-lanes
111              - link-frequencies
112
113    required:
114      - port@0
115      - port@1
116
117required:
118  - compatible
119  - reg
120  - clocks
121  - clock-names
122  - vddc-supply
123  - vddio-supply
124  - vddmipi-supply
125  - ports
126
127additionalProperties: false
128
129examples:
130  - |
131    #include <dt-bindings/gpio/gpio.h>
132
133    i2c {
134      #address-cells = <1>;
135      #size-cells = <0>;
136
137      csi-bridge@e {
138        compatible = "toshiba,tc358746";
139        reg = <0xe>;
140
141        clocks = <&refclk>;
142        clock-names = "refclk";
143
144        reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
145
146        vddc-supply = <&v1_2d>;
147        vddio-supply = <&v1_8d>;
148        vddmipi-supply = <&v1_2d>;
149
150        /* sensor mclk provider */
151        #clock-cells = <0>;
152
153        ports {
154          #address-cells = <1>;
155          #size-cells = <0>;
156
157          /* Input */
158          port@0 {
159            reg = <0>;
160            tc358746_in: endpoint {
161              remote-endpoint = <&sensor_out>;
162              hsync-active = <0>;
163              vsync-active = <0>;
164              bus-type = <5>;
165            };
166          };
167
168          /* Output */
169          port@1 {
170            reg = <1>;
171            tc358746_out: endpoint {
172              remote-endpoint = <&mipi_csi2_in>;
173              data-lanes = <1 2>;
174              clock-noncontinuous;
175              link-frequencies = /bits/ 64 <216000000>;
176            };
177          };
178        };
179      };
180    };
181