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- 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
11                                      specifier.
12- ti,hwmods : Must be "uart<n>", n being the instance number (1-based)
13
14Optional properties:
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.
19
20Example:
21
22                uart4: serial@49042000 {
23                        compatible = "ti,omap3-uart";
24                        reg = <0x49042000 0x400>;
25                        interrupts = <80>;
26                        dmas = <&sdma 81 &sdma 82>;
27                        dma-names = "tx", "rx";
28                        ti,hwmods = "uart4";
29                        clock-frequency = <48000000>;
30                };
31