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