Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8be3da65 authored by Boris BREZILLON's avatar Boris BREZILLON Committed by Greg Kroah-Hartman
Browse files

tty/serial: at91: document clock properties 



Document the clock properties required by the at91 usart driver.

Signed-off-by: default avatarBoris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5855b210

Documentation/devicetree/bindings/serial/atmel-usart.txt

+7 −0
Original line number Diff line number Diff line
@@ -6,6 +6,9 @@ Required properties: 
  additional mode or an USART new feature.

- reg: Should contain registers location and length

- interrupts: Should contain interrupt

- clock-names: tuple listing input clock names.

	Required elements: "usart"

- clocks: phandles to input clocks.



Optional properties:

- atmel,use-dma-rx: use of PDC or DMA for receiving data
@@ -26,6 +29,8 @@ Example: 
		compatible = "atmel,at91sam9260-usart";

		reg = <0xfff8c000 0x4000>;

		interrupts = <7>;

		clocks = <&usart0_clk>;

		clock-names = "usart";

		atmel,use-dma-rx;

		atmel,use-dma-tx;

	};
@@ -35,6 +40,8 @@ Example: 
		compatible = "atmel,at91sam9260-usart";

		reg = <0xf001c000 0x100>;

		interrupts = <12 4 5>;

		clocks = <&usart0_clk>;

		clock-names = "usart";

		atmel,use-dma-rx;

		atmel,use-dma-tx;

		dmas = <&dma0 2 0x3>,