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Documentation / devicetree / bindings / clock / exynos4-clock.txt




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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:00 EST.

1	* Samsung Exynos4 Clock Controller
2	
3	The Exynos4 clock controller generates and supplies clock to various controllers
4	within the Exynos4 SoC. The clock binding described here is applicable to all
5	SoC's in the Exynos4 family.
6	
7	Required Properties:
8	
9	- compatible: should be one of the following.
10	  - "samsung,exynos4210-clock" - controller compatible with Exynos4210 SoC.
11	  - "samsung,exynos4412-clock" - controller compatible with Exynos4412 SoC.
12	
13	- reg: physical base address of the controller and length of memory mapped
14	  region.
15	
16	- #clock-cells: should be 1.
17	
18	Each clock is assigned an identifier and client nodes can use this identifier
19	to specify the clock which they consume.
20	
21	All available clocks are defined as preprocessor macros in
22	dt-bindings/clock/exynos4.h header and can be used in device
23	tree sources.
24	
25	Example 1: An example of a clock controller node is listed below.
26	
27		clock: clock-controller@0x10030000 {
28			compatible = "samsung,exynos4210-clock";
29			reg = <0x10030000 0x20000>;
30			#clock-cells = <1>;
31		};
32	
33	Example 2: UART controller node that consumes the clock generated by the clock
34		   controller. Refer to the standard clock bindings for information
35		   about 'clocks' and 'clock-names' property.
36	
37		serial@13820000 {
38			compatible = "samsung,exynos4210-uart";
39			reg = <0x13820000 0x100>;
40			interrupts = <0 54 0>;
41			clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
42			clock-names = "uart", "clk_uart_baud0";
43		};
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