61 lines
1.7 KiB
Plaintext
Executable file
61 lines
1.7 KiB
Plaintext
Executable file
* Microchip PIC32 Pin Controller
|
|
|
|
Please refer to pinctrl-bindings.txt, ../gpio/gpio.txt, and
|
|
../interrupt-controller/interrupts.txt for generic information regarding
|
|
pin controller, GPIO, and interrupt bindings.
|
|
|
|
PIC32 'pin configuration node' is a node of a group of pins which can be
|
|
used for a specific device or function. This node represents configuraions of
|
|
pins, optional function, and optional mux related configuration.
|
|
|
|
Required properties for pin controller node:
|
|
- compatible: "microchip,pic32mada-pinctrl"
|
|
- reg: Address range of the pinctrl registers.
|
|
- clocks: Clock specifier (see clock bindings for details)
|
|
|
|
Required properties for pin configuration sub-nodes:
|
|
- pins: List of pins to which the configuration applies.
|
|
|
|
Optional properties for pin configuration sub-nodes:
|
|
----------------------------------------------------
|
|
- function: Mux function for the specified pins.
|
|
- bias-pull-up: Enable weak pull-up.
|
|
- bias-pull-down: Enable weak pull-down.
|
|
- input-enable: Set the pin as an input.
|
|
- output-low: Set the pin as an output level low.
|
|
- output-high: Set the pin as an output level high.
|
|
- microchip,digital: Enable digital I/O.
|
|
- microchip,analog: Enable analog I/O.
|
|
|
|
Example:
|
|
|
|
pic32_pinctrl: pinctrl@1f801400{
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
compatible = "microchip,pic32mzda-pinctrl";
|
|
reg = <0x1f801400 0x400>;
|
|
clocks = <&rootclk PB1CLK>;
|
|
|
|
pinctrl_uart2: pinctrl_uart2 {
|
|
uart2-tx {
|
|
pins = "G9";
|
|
function = "U2TX";
|
|
microchip,digital;
|
|
output-low;
|
|
};
|
|
uart2-rx {
|
|
pins = "B0";
|
|
function = "U2RX";
|
|
microchip,digital;
|
|
input-enable;
|
|
};
|
|
};
|
|
};
|
|
|
|
uart2: serial@1f822200 {
|
|
compatible = "microchip,pic32mzda-uart";
|
|
reg = <0x1f822200 0x50>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_uart2>;
|
|
};
|