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 configurations 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