About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / serial / samsung_uart.txt




Custom Search

Based on kernel version 3.19. Page generated on 2015-02-13 21:19 EST.

1	* Samsung's UART Controller
2	
3	The Samsung's UART controller is used for interfacing SoC with serial
4	communicaion devices.
5	
6	Required 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	
32	Optional properties:
33	- samsung,uart-fifosize: The fifo size supported by the UART channel
34	
35	Note: 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
38	SoC.
39	
40	Example:
41		aliases {
42			serial0 = &uart0;
43			serial1 = &uart1;
44			serial2 = &uart2;
45		};
46	
47	Example:
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		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.