[mirror_ubuntu-focal-kernel.git] / Documentation / devicetree / bindings / clock / exynos5250-clock.txt

* Samsung Exynos5250 Clock Controller

The Exynos5250 clock controller generates and supplies clock to various
controllers within the Exynos5250 SoC.

Required Properties:

- compatible: should be one of the following.
  - "samsung,exynos5250-clock" - controller compatible with Exynos5250 SoC.

- reg: physical base address of the controller and length of memory mapped
  region.

- #clock-cells: should be 1.

Each clock is assigned an identifier and client nodes can use this identifier
to specify the clock which they consume.

All available clocks are defined as preprocessor macros in
dt-bindings/clock/exynos5250.h header and can be used in device
tree sources.

Example 1: An example of a clock controller node is listed below.

	clock: clock-controller@10010000 {
		compatible = "samsung,exynos5250-clock";
		reg = <0x10010000 0x30000>;
		#clock-cells = <1>;
	};

Example 2: UART controller node that consumes the clock generated by the clock
	   controller. Refer to the standard clock bindings for information
	   about 'clocks' and 'clock-names' property.

	serial@13820000 {
		compatible = "samsung,exynos4210-uart";
		reg = <0x13820000 0x100>;
		interrupts = <0 54 0>;
		clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
		clock-names = "uart", "clk_uart_baud0";
	};
Commit	Line	Data
6e3ad268 TA	1	* Samsung Exynos5250 Clock Controller
	2
	3	The Exynos5250 clock controller generates and supplies clock to various
	4	controllers within the Exynos5250 SoC.
	5
	6	Required Properties:
	7
cdbea098	8	- compatible: should be one of the following.
6e3ad268 TA	9	- "samsung,exynos5250-clock" - controller compatible with Exynos5250 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
fe273c3e AH	16	Each clock is assigned an identifier and client nodes can use this identifier
fe273c3e AH	17	to specify the clock which they consume.
4a453314	18
fe273c3e AH	19	All available clocks are defined as preprocessor macros in
	20	dt-bindings/clock/exynos5250.h header and can be used in device
	21	tree sources.
4a453314	22
6e3ad268 TA	23	Example 1: An example of a clock controller node is listed below.
6e3ad268 TA	24
4c9847b7	25	clock: clock-controller@10010000 {
6e3ad268 TA	26	compatible = "samsung,exynos5250-clock";
	27	reg = <0x10010000 0x30000>;
	28	#clock-cells = <1>;
	29	};
	30
	31	Example 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@13820000 {
	36	compatible = "samsung,exynos4210-uart";
	37	reg = <0x13820000 0x100>;
	38	interrupts = <0 54 0>;
fe273c3e	39	clocks = <&clock CLK_UART2>, <&clock CLK_SCLK_UART2>;
6e3ad268 TA	40	clock-names = "uart", "clk_uart_baud0";
6e3ad268 TA	41	};