1OMAP UART controller 2 3Required properties: 4- compatible : should be "ti,omap2-uart" for OMAP2 controllers 5- compatible : should be "ti,omap3-uart" for OMAP3 controllers 6- compatible : should be "ti,omap4-uart" for OMAP4 controllers 7- compatible : should be "ti,am4372-uart" for AM437x controllers 8- compatible : should be "ti,am3352-uart" for AM335x controllers 9- compatible : should be "ti,dra742-uart" for DRA7x controllers 10- reg : address and length of the register space 11- interrupts or interrupts-extended : Should contain the uart interrupt 12 specifier or both the interrupt 13 controller phandle and interrupt 14 specifier. 15- ti,hwmods : Must be "uart<n>", n being the instance number (1-based) 16 17Optional properties: 18- clock-frequency : frequency of the clock input to the UART 19- dmas : DMA specifier, consisting of a phandle to the DMA controller 20 node and a DMA channel number. 21- dma-names : "rx" for receive channel, "tx" for transmit channel. 22 23Example: 24 25 uart4: serial@49042000 { 26 compatible = "ti,omap3-uart"; 27 reg = <0x49042000 0x400>; 28 interrupts = <80>; 29 dmas = <&sdma 81 &sdma 82>; 30 dma-names = "tx", "rx"; 31 ti,hwmods = "uart4"; 32 clock-frequency = <48000000>; 33 }; 34