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Chanwoo Choi664c6582014-05-17 07:37:37 +09001* Samsung Exynos3250 Clock Controller
2
3The Exynos3250 clock controller generates and supplies clock to various
4controllers within the Exynos3250 SoC.
5
6Required Properties:
7
8- compatible: should be one of the following.
9 - "samsung,exynos3250-cmu" - controller compatible with Exynos3250 SoC.
10
11- reg: physical base address of the controller and length of memory mapped
12 region.
13
14- #clock-cells: should be 1.
15
16Each clock is assigned an identifier and client nodes can use this identifier
17to specify the clock which they consume.
18
19All available clocks are defined as preprocessor macros in
20dt-bindings/clock/exynos3250.h header and can be used in device
21tree sources.
22
23Example 1: An example of a clock controller node is listed below.
24
25 cmu: clock-controller@10030000 {
26 compatible = "samsung,exynos3250-cmu";
27 reg = <0x10030000 0x20000>;
28 #clock-cells = <1>;
29 };
30
31Example 2: UART controller node that consumes the clock generated by the clock
32 controller. Refer to the standard clock bindings for information
33 about 'clocks' and 'clock-names' property.
34
35 serial@13800000 {
36 compatible = "samsung,exynos4210-uart";
37 reg = <0x13800000 0x100>;
38 interrupts = <0 109 0>;
39 clocks = <&cmu CLK_UART0>, <&cmu CLK_SCLK_UART0>;
40 clock-names = "uart", "clk_uart_baud0";
41 };