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
|
* NXP PCA953x I2C GPIO multiplexer
Required properties:
- compatible: Has to contain one of the following:
nxp,pca9505
nxp,pca9534
nxp,pca9535
nxp,pca9536
nxp,pca9537
nxp,pca9538
nxp,pca9539
nxp,pca9554
nxp,pca9555
nxp,pca9556
nxp,pca9557
nxp,pca9574
nxp,pca9575
nxp,pca9698
nxp,pcal6524
nxp,pcal9555a
maxim,max7310
maxim,max7312
maxim,max7313
maxim,max7315
ti,pca6107
ti,pca9536
ti,tca6408
ti,tca6416
ti,tca6424
ti,tca9539
ti,tca9554
onnn,pca9654
exar,xra1202
- gpio-controller: if used as gpio expander.
- #gpio-cells: if used as gpio expander.
- interrupt-controller: if to be used as interrupt expander.
- #interrupt-cells: if to be used as interrupt expander.
Optional properties:
- interrupts: interrupt specifier for the device's interrupt output.
- reset-gpios: GPIO specification for the RESET input. This is an
active low signal to the PCA953x.
- vcc-supply: power supply regulator.
Example:
gpio@20 {
compatible = "nxp,pca9505";
reg = <0x20>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pca9505>;
gpio-controller;
#gpio-cells = <2>;
interrupt-parent = <&gpio3>;
interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
};
Example with Interrupts:
gpio99: gpio@22 {
compatible = "nxp,pcal6524";
reg = <0x22>;
interrupt-parent = <&gpio6>;
interrupts = <1 IRQ_TYPE_EDGE_FALLING>; /* gpio6_161 */
interrupt-controller;
#interrupt-cells = <2>;
vcc-supply = <&vdds_1v8_main>;
gpio-controller;
#gpio-cells = <2>;
gpio-line-names =
"hdmi-ct-hpd", "hdmi.ls-oe", "p02", "p03", "vibra", "fault2", "p06", "p07",
"en-usb", "en-host1", "en-host2", "chg-int", "p14", "p15", "mic-int", "en-modem",
"shdn-hs-amp", "chg-status+red", "green", "blue", "en-esata", "fault1", "p26", "p27";
};
ts3a227@3b {
compatible = "ti,ts3a227e";
reg = <0x3b>;
interrupt-parent = <&gpio99>;
interrupts = <14 IRQ_TYPE_EDGE_RISING>;
ti,micbias = <0>; /* 2.1V */
};
|
