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Commit 81dfdd39 authored by Andrei Pistirica's avatar Andrei Pistirica Committed by Ralf Baechle
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dt/bindings: Add bindings for PIC32 UART driver 



Document the devicetree bindings for the UART peripheral found on
Microchip PIC32 class devices.

Signed-off-by: default avatarAndrei Pistirica <andrei.pistirica@microchip.com>
Signed-off-by: default avatarJoshua Henderson <joshua.henderson@microchip.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12100/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 0c94fa33

Documentation/devicetree/bindings/serial/microchip,pic32-uart.txt

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* Microchip Universal Asynchronous Receiver Transmitter (UART)



Required properties:

- compatible: Should be "microchip,pic32mzda-uart"

- reg: Should contain registers location and length

- interrupts: Should contain interrupt

- clocks: Phandle to the clock.

          See: Documentation/devicetree/bindings/clock/clock-bindings.txt

- pinctrl-names: A pinctrl state names "default" must be defined.

- pinctrl-0: Phandle referencing pin configuration of the UART peripheral.

             See: Documentation/devicetree/bindings/pinctrl/pinctrl-binding.txt



Optional properties:

- cts-gpios: CTS pin for UART



Example:

	uart1: serial@1f822000 {

		compatible = "microchip,pic32mzda-uart";

		reg = <0x1f822000 0x50>;

		interrupts = <112 IRQ_TYPE_LEVEL_HIGH>,

			<113 IRQ_TYPE_LEVEL_HIGH>,

			<114 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&PBCLK2>;

		pinctrl-names = "default";

		pinctrl-0 = <&pinctrl_uart1

				&pinctrl_uart1_cts

				&pinctrl_uart1_rts>;

		cts-gpios = <&gpio1 15 0>;

	};