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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1* NXP PCA953x I2C GPIO multiplexer
2
3Required properties:
4 - compatible: Has to contain one of the following:
5 nxp,pca6416
6 nxp,pca9505
7 nxp,pca9534
8 nxp,pca9535
9 nxp,pca9536
10 nxp,pca9537
11 nxp,pca9538
12 nxp,pca9539
13 nxp,pca9554
14 nxp,pca9555
15 nxp,pca9556
16 nxp,pca9557
17 nxp,pca9574
18 nxp,pca9575
19 nxp,pca9698
20 nxp,pcal6416
21 nxp,pcal6524
22 nxp,pcal9555a
23 maxim,max7310
24 maxim,max7312
25 maxim,max7313
26 maxim,max7315
27 ti,pca6107
28 ti,pca9536
29 ti,tca6408
30 ti,tca6416
31 ti,tca6424
32 ti,tca9539
33 ti,tca9554
34 onnn,cat9554
35 onnn,pca9654
36 exar,xra1202
37 - gpio-controller: if used as gpio expander.
38 - #gpio-cells: if used as gpio expander.
39 - interrupt-controller: if to be used as interrupt expander.
40 - #interrupt-cells: if to be used as interrupt expander.
41
42Optional properties:
43 - interrupts: interrupt specifier for the device's interrupt output.
44 - reset-gpios: GPIO specification for the RESET input. This is an
45 active low signal to the PCA953x.
46 - vcc-supply: power supply regulator.
47
48Example:
49
50
51 gpio@20 {
52 compatible = "nxp,pca9505";
53 reg = <0x20>;
54 pinctrl-names = "default";
55 pinctrl-0 = <&pinctrl_pca9505>;
56 gpio-controller;
57 #gpio-cells = <2>;
58 interrupt-parent = <&gpio3>;
59 interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
60 };
61
62
63Example with Interrupts:
64
65
66 gpio99: gpio@22 {
67 compatible = "nxp,pcal6524";
68 reg = <0x22>;
69 interrupt-parent = <&gpio6>;
70 interrupts = <1 IRQ_TYPE_EDGE_FALLING>; /* gpio6_161 */
71 interrupt-controller;
72 #interrupt-cells = <2>;
73 vcc-supply = <&vdds_1v8_main>;
74 gpio-controller;
75 #gpio-cells = <2>;
76 gpio-line-names =
77 "hdmi-ct-hpd", "hdmi.ls-oe", "p02", "p03", "vibra", "fault2", "p06", "p07",
78 "en-usb", "en-host1", "en-host2", "chg-int", "p14", "p15", "mic-int", "en-modem",
79 "shdn-hs-amp", "chg-status+red", "green", "blue", "en-esata", "fault1", "p26", "p27";
80 };
81
82 ts3a227@3b {
83 compatible = "ti,ts3a227e";
84 reg = <0x3b>;
85 interrupt-parent = <&gpio99>;
86 interrupts = <14 IRQ_TYPE_EDGE_RISING>;
87 ti,micbias = <0>; /* 2.1V */
88 };
89