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tty/serial: at91: document clock properties

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Document the clock properties required by the at91 usart driver.

Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Boris BREZILLON 2013-12-17 17:22:20 +01:00 committed by Greg Kroah-Hartman
parent 5855b2104b
commit 8be3da65d9
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/serial/atmel-usart.txt
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@ -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>,