bindings/i2c/i2c-demux-pinctrl.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-demux-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Pinctrl-based I2C Bus Demultiplexer
10   - Wolfram Sang <wsa+renesas@sang-engineering.com>
21       +-------------------------------+
23       |                               |   +-----+  +-----+
24       |   +------------+              |   | dev |  | dev |
25       |   |I2C IP Core1|--\           |   +-----+  +-----+
26       |   +------------+   \-------+  |      |        |
27       |                    |Pinctrl|--|------+--------+
28       |   +------------+   +-------+  |
29       |   |I2C IP Core2|--/           |
30       |   +------------+              |
32       +-------------------------------+
35   - $ref: /schemas/i2c/i2c-controller.yaml#
39     const: i2c-demux-pinctrl
41   i2c-parent:
42     $ref: /schemas/types.yaml#/definitions/phandle-array
49   i2c-bus-name:
52       The name of this bus.  Also needed as pinctrl-name for the I2C parents.
55   - compatible
56   - i2c-parent
57   - i2c-bus-name
62   - |
63     #include <dt-bindings/gpio/gpio.h>
64     #include <dt-bindings/interrupt-controller/irq.h>
66     gpioi2c2: i2c-9 {
67         #address-cells = <1>;
68         #size-cells = <0>;
69         compatible = "i2c-gpio";
70         scl-gpios = <&gpio5 5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
71         sda-gpios = <&gpio5 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
72         i2c-gpio,delay-us = <5>;
81         pinctrl-0 = <&iic2_pins>;
83         // state with the same name as i2c-bus-name in the I2C bus demultiplexer
85         pinctrl-names = "i2c-hdmi";
87         clock-frequency = <100000>;
96         pinctrl-0 = <&i2c2_pins>;
98         // state with the same name as i2c-bus-name in the I2C bus demultiplexer
100         pinctrl-names = "i2c-hdmi";
102         clock-frequency = <100000>;
110     // HDMI, so the bus is named "i2c-hdmi":
111     i2chdmi: i2c-mux3 {
112         compatible = "i2c-demux-pinctrl";
113         i2c-parent = <&iic2>, <&i2c2>, <&gpioi2c2>;
114         i2c-bus-name = "i2c-hdmi";
115         #address-cells = <1>;
116         #size-cells = <0>;
119             compatible = "asahi-kasei,ak4643";
120             #sound-dai-cells = <0>;
124         composite-in@20 {
130                     bus-width = <8>;
131                     remote-endpoint = <&vin1ep0>;
139             interrupt-parent = <&gpio1>;
142             clock-names = "cec";
144             avdd-supply = <&fixedregulator1v8>;
145             dvdd-supply = <&fixedregulator1v8>;
146             pvdd-supply = <&fixedregulator1v8>;
147             dvdd-3v-supply = <&fixedregulator3v3>;
148             bgvdd-supply = <&fixedregulator1v8>;
150             adi,input-depth = <8>;
151             adi,input-colorspace = "rgb";
152             adi,input-clock = "1x";
155                 #address-cells = <1>;
156                 #size-cells = <0>;
161                         remote-endpoint = <&lvds0_out>;
168                         remote-endpoint = <&hdmi_con_out>;