1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/i2c-mux-pca954x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP PCA954x I2C bus switch
maintainers:
- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
description:
The binding supports NXP PCA954x and PCA984x I2C mux/switch devices.
allOf:
- $ref: /schemas/i2c/i2c-mux.yaml#
properties:
compatible:
oneOf:
- enum:
- nxp,pca9540
- nxp,pca9542
- nxp,pca9543
- nxp,pca9544
- nxp,pca9545
- nxp,pca9546
- nxp,pca9547
- nxp,pca9548
- nxp,pca9846
- nxp,pca9847
- nxp,pca9848
- nxp,pca9849
- items:
- const: nxp,pca9646
- const: nxp,pca9546
reg:
maxItems: 1
interrupts:
maxItems: 1
"#interrupt-cells":
const: 2
interrupt-controller: true
reset-gpios:
maxItems: 1
i2c-mux-idle-disconnect:
type: boolean
description: Forces mux to disconnect all children in idle state. This is
necessary for example, if there are several multiplexers on the bus and
the devices behind them use same I2C addresses.
idle-state:
description: if present, overrides i2c-mux-idle-disconnect
$ref: /schemas/mux/mux-controller.yaml#/properties/idle-state
required:
- compatible
- reg
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
i2c-mux@74 {
compatible = "nxp,pca9548";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x74>;
interrupt-parent = <&ipic>;
interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
i2c@2 {
#address-cells = <1>;
#size-cells = <0>;
reg = <2>;
eeprom@54 {
compatible = "atmel,24c08";
reg = <0x54>;
};
};
i2c@4 {
#address-cells = <1>;
#size-cells = <0>;
reg = <4>;
rtc@51 {
compatible = "nxp,pcf8563";
reg = <0x51>;
};
};
};
};
...
|
