Lines Matching +full:mux +full:- +full:controls

1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-mux-gpmux.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: General Purpose I2C Bus Mux
10   - Peter Rosin <peda@axentia.se>
13   This binding describes an I2C bus multiplexer that uses a mux controller
14   from the mux subsystem to route the I2C signals.
16                                     .-----.  .-----.
18       .------------.                '-----'  '-----'
20       |            |          .--------+--------'
21       |   .------. |  .------+    child bus A, on MUX value set to 0
22       |   | I2C  |-|--| Mux  |
23       |   '------' |  '--+---+    child bus B, on MUX value set to 1
24       |   .------. |     |    '----------+--------+--------.
25       |   | MUX- | |     |               |        |        |
26       |   | Ctrl |-|-----+            .-----.  .-----.  .-----.
27       |   '------' |                  | dev |  | dev |  | dev |
28       '------------'                  '-----'  '-----'  '-----'
32   - $ref: /schemas/i2c/i2c-mux.yaml#
36     const: i2c-mux
38   i2c-parent:
41       The phandle of the I2C bus that this multiplexer's master-side port is
44   mux-controls:
47       The mux-controller states are the I2C sub-bus numbers.
49   mux-locked:
54        - during setup of the multiplexer
55        - between setup of the multiplexer and the child bus I2C transaction
56        - between the child bus I2C transaction and releasing of the multiplexer
57        - during releasing of the multiplexer
63       If mux-locked is not present, the multiplexer is assumed to be parent-locked.
66       The properties of mux-locked and parent-locked multiplexers are discussed
67       in more detail in Documentation/i2c/i2c-topology.rst.
70   - compatible
71   - i2c-parent
72   - mux-controls
77   - |
78     #include <dt-bindings/gpio/gpio.h>
79     mux: mux-controller {
80         compatible = "gpio-mux";
81         #mux-control-cells = <0>;
83         mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>,
87     i2c-mux {
88         compatible = "i2c-mux";
89         mux-locked;
90         i2c-parent = <&i2c1>;
92         mux-controls = <&mux>;
94         #address-cells = <1>;
95         #size-cells = <0>;
99             #address-cells = <1>;
100             #size-cells = <0>;
104                 gpio-controller;
105                 #gpio-cells = <2>;
112             #address-cells = <1>;
113             #size-cells = <0>;
117                 gpio-controller;
118                 #gpio-cells = <2>;