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
15 - ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
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.
25 uart4: serial@49042000 {
26 compatible = "ti,omap3-uart";
27 reg = <0x49042000 0x400>;
29 dmas = <&sdma 81 &sdma 82>;
30 dma-names = "tx", "rx";
32 clock-frequency = <48000000>;