Kernel-3.10.0-957.el7_atmel-usart

• Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)

Required properties:

• compatible: Should be “atmel,-usart”
  The compatible indicated will be the first SoC to support an
  additional mode or an USART new feature.
• reg: Should contain registers location and length
• interrupts: Should contain interrupt

Optional properties:

• atmel,use-dma-rx: use of PDC or DMA for receiving data
• atmel,use-dma-tx: use of PDC or DMA for transmitting data

compatible description:

• at91rm9200: legacy USART support
• at91sam9260: generic USART implementation for SAM9 SoCs

Example:

usart0: serial@fff8c000 {
    compatible = "atmel,at91sam9260-usart";
    reg = <0xfff8c000 0x4000>;
    interrupts = <7>;
    atmel,use-dma-rx;
    atmel,use-dma-tx;
};