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 - reg : address and length of the register space
8 - interrupts or interrupts-extended : Should contain the uart interrupt
9 specifier or both the interrupt
10 controller phandle and interrupt
12 - ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
15 - clock-frequency : frequency of the clock input to the UART
16 - dmas : DMA specifier, consisting of a phandle to the DMA controller
17 node and a DMA channel number.
18 - dma-names : "rx" for receive channel, "tx" for transmit channel.
22 uart4: serial@49042000 {
23 compatible = "ti,omap3-uart";
24 reg = <0x49042000 0x400>;
26 dmas = <&sdma 81 &sdma 82>;
27 dma-names = "tx", "rx";
29 clock-frequency = <48000000>;