Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
[pandora-kernel.git] / Documentation / devicetree / bindings / tty / serial / atmel-usart.txt
1 * Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)
2
3 Required properties:
4 - compatible: Should be "atmel,<chip>-usart"
5   The compatible <chip> indicated will be the first SoC to support an
6   additional mode or an USART new feature.
7 - reg: Should contain registers location and length
8 - interrupts: Should contain interrupt
9
10 Optional properties:
11 - atmel,use-dma-rx: use of PDC or DMA for receiving data
12 - atmel,use-dma-tx: use of PDC or DMA for transmitting data
13
14 <chip> compatible description:
15 - at91rm9200:  legacy USART support
16 - at91sam9260: generic USART implementation for SAM9 SoCs
17
18 Example:
19
20         usart0: serial@fff8c000 {
21                 compatible = "atmel,at91sam9260-usart";
22                 reg = <0xfff8c000 0x4000>;
23                 interrupts = <7>;
24                 atmel,use-dma-rx;
25                 atmel,use-dma-tx;
26         };
27