1 * Allwinner A1X Pin Controller
3 The pins controlled by sunXi pin controller are organized in banks,
4 each bank has 32 pins. Each pin has 7 multiplexing functions, with
5 the first two functions being GPIO in and out. The configuration on
6 the pins includes drive strength and pull-up.
9 - compatible: Should be one of the followings (depending on you SoC):
10 "allwinner,sun4i-a10-pinctrl"
11 "allwinner,sun5i-a10s-pinctrl"
12 "allwinner,sun5i-a13-pinctrl"
13 "allwinner,sun6i-a31-pinctrl"
14 "allwinner,sun6i-a31s-pinctrl"
15 "allwinner,sun6i-a31-r-pinctrl"
16 "allwinner,sun7i-a20-pinctrl"
17 "allwinner,sun8i-a23-pinctrl"
18 "allwinner,sun8i-a23-r-pinctrl"
19 "allwinner,sun8i-a33-pinctrl"
20 "allwinner,sun9i-a80-pinctrl"
21 "allwinner,sun9i-a80-r-pinctrl"
22 "allwinner,sun8i-a83t-pinctrl"
23 "allwinner,sun8i-h3-pinctrl"
24 "allwinner,sun8i-h3-r-pinctrl"
25 "allwinner,sun50i-a64-pinctrl"
26 "nextthing,gr8-pinctrl"
28 - reg: Should contain the register physical address and length for the
31 - clocks: phandle to the clocks feeding the pin controller:
32 - "apb": the gated APB parent clock
33 - "hosc": the high frequency oscillator in the system
34 - "losc": the low frequency oscillator in the system
36 Note: For backward compatibility reasons, the hosc and losc clocks are only
37 required if you need to use the optional input-debounce property. Any new
38 device tree should set them.
41 - input-debounce: Array of debouncing periods in microseconds. One period per
42 irq bank found in the controller. 0 if no setup required.
45 Please refer to pinctrl-bindings.txt in this directory for details of the
46 common pinctrl bindings used by client devices.
48 A pinctrl node should contain at least one subnodes representing the
49 pinctrl groups available on the machine. Each subnode will list the
50 pins it needs, and how they should be configured, with regard to muxer
51 configuration, drive strength and pullups. If one of these options is
52 not set, its actual value will be unspecified.
54 This driver supports the generic pin multiplexing and configuration
55 bindings. For details on each properties, you can refer to
56 ./pinctrl-bindings.txt.
58 Required sub-node properties:
62 Optional sub-node properties:
68 *** Deprecated pin configuration and multiplexing binding
70 Required subnode-properties:
72 - allwinner,pins: List of strings containing the pin name.
73 - allwinner,function: Function to mux the pins listed above to.
75 Optional subnode-properties:
76 - allwinner,drive: Integer. Represents the current sent to the pin
81 - allwinner,pull: Integer.
88 pio: pinctrl@01c20800 {
89 compatible = "allwinner,sun5i-a13-pinctrl";
90 reg = <0x01c20800 0x400>;
94 uart1_pins_a: uart1@0 {
95 allwinner,pins = "PE10", "PE11";
96 allwinner,function = "uart1";
97 allwinner,drive = <0>;
101 uart1_pins_b: uart1@1 {
102 allwinner,pins = "PG3", "PG4";
103 allwinner,function = "uart1";
104 allwinner,drive = <0>;
105 allwinner,pull = <0>;
110 GPIO and interrupt controller
111 -----------------------------
113 This hardware also acts as a GPIO controller and an interrupt
116 Consumers that would want to refer to one or the other (or both)
117 should provide through the usual *-gpios and interrupts properties a
118 cell with 3 arguments, first the number of the bank, then the pin
119 inside that bank, and finally the flags for the GPIO/interrupts.
124 compatible = "nxp,pcf8574a";
130 interrupt-parent = <&pio>;
131 interrupts = <6 0 IRQ_TYPE_EDGE_FALLING>;
132 interrupt-controller;
133 #interrupt-cells = <2>;
136 reg_usb1_vbus: usb1-vbus {
137 compatible = "regulator-fixed";
138 regulator-name = "usb1-vbus";
139 regulator-min-microvolt = <5000000>;
140 regulator-max-microvolt = <5000000>;
141 gpio = <&pio 7 6 GPIO_ACTIVE_HIGH>;