1* Samsung's UART Controller
2
3The Samsung's UART controller is used for interfacing SoC with serial
4communicaion devices.
5
6Required properties:
7- compatible: should be one of following:
8  - "samsung,exynos4210-uart" -  Exynos4210 SoC,
9  - "samsung,s3c2410-uart" - compatible with ports present on S3C2410 SoC,
10  - "samsung,s3c2412-uart" - compatible with ports present on S3C2412 SoC,
11  - "samsung,s3c2440-uart" - compatible with ports present on S3C2440 SoC,
12  - "samsung,s3c6400-uart" - compatible with ports present on S3C6400 SoC,
13  - "samsung,s5pv210-uart" - compatible with ports present on S5PV210 SoC.
14
15- reg: base physical address of the controller and length of memory mapped
16  region.
17
18- interrupts: a single interrupt signal to SoC interrupt controller,
19  according to interrupt bindings documentation [1].
20
21- clock-names: input names of clocks used by the controller:
22  - "uart" - controller bus clock,
23  - "clk_uart_baudN" - Nth baud base clock input (N = 0, 1, ...),
24    according to SoC User's Manual (only N = 0 is allowedfor SoCs without
25    internal baud clock mux).
26- clocks: phandles and specifiers for all clocks specified in "clock-names"
27  property, in the same order, according to clock bindings documentation [2].
28
29[1] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
30[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
31
32Optional properties:
33- samsung,uart-fifosize: The fifo size supported by the UART channel
34
35Note: Each Samsung UART should have an alias correctly numbered in the
36"aliases" node, according to serialN format, where N is the port number
37(non-negative decimal integer) as specified by User's Manual of respective
38SoC.
39
40Example:
41	aliases {
42		serial0 = &uart0;
43		serial1 = &uart1;
44		serial2 = &uart2;
45	};
46
47Example:
48	uart1: serial@7f005400 {
49		compatible = "samsung,s3c6400-uart";
50		reg = <0x7f005400 0x100>;
51		interrupt-parent = <&vic1>;
52		interrupts = <6>;
53		clock-names = "uart", "clk_uart_baud2",
54				"clk_uart_baud3";
55		clocks = <&clocks PCLK_UART1>, <&clocks PCLK_UART1>,
56				<&clocks SCLK_UART>;
57		samsung,uart-fifosize = <16>;
58	};
59