1* Microchip PIC32 Pin Controller
2
3Please refer to pinctrl-bindings.txt, ../gpio/gpio.txt, and
4../interrupt-controller/interrupts.txt for generic information regarding
5pin controller, GPIO, and interrupt bindings.
6
7PIC32 'pin configuration node' is a node of a group of pins which can be
8used for a specific device or function. This node represents configuraions of
9pins, optional function, and optional mux related configuration.
10
11Required properties for pin controller node:
12 - compatible: "microchip,pic32mada-pinctrl"
13 - reg: Address range of the pinctrl registers.
14 - clocks: Clock specifier (see clock bindings for details)
15
16Required properties for pin configuration sub-nodes:
17 - pins: List of pins to which the configuration applies.
18
19Optional properties for pin configuration sub-nodes:
20----------------------------------------------------
21 - function: Mux function for the specified pins.
22 - bias-pull-up: Enable weak pull-up.
23 - bias-pull-down: Enable weak pull-down.
24 - input-enable: Set the pin as an input.
25 - output-low: Set the pin as an output level low.
26 - output-high: Set the pin as an output level high.
27 - microchip,digital: Enable digital I/O.
28 - microchip,analog: Enable analog I/O.
29
30Example:
31
32pic32_pinctrl: pinctrl@1f801400{
33	#address-cells = <1>;
34	#size-cells = <1>;
35	compatible = "microchip,pic32mzda-pinctrl";
36	reg = <0x1f801400 0x400>;
37	clocks = <&rootclk PB1CLK>;
38
39	pinctrl_uart2: pinctrl_uart2 {
40		uart2-tx {
41			pins = "G9";
42			function = "U2TX";
43			microchip,digital;
44			output-low;
45		};
46		uart2-rx {
47			pins = "B0";
48			function = "U2RX";
49			microchip,digital;
50			input-enable;
51		};
52	};
53};
54
55uart2: serial@1f822200 {
56	compatible = "microchip,pic32mzda-uart";
57	reg = <0x1f822200 0x50>;
58	pinctrl-names = "default";
59	pinctrl-0 = <&pinctrl_uart2>;
60};
61