58 lines
1.7 KiB
Plaintext
Executable file
58 lines
1.7 KiB
Plaintext
Executable file
* Samsung Exynos3250 Clock Controller
|
|
|
|
The Exynos3250 clock controller generates and supplies clock to various
|
|
controllers within the Exynos3250 SoC.
|
|
|
|
Required Properties:
|
|
|
|
- compatible: should be one of the following.
|
|
- "samsung,exynos3250-cmu" - controller compatible with Exynos3250 SoC.
|
|
- "samsung,exynos3250-cmu-dmc" - controller compatible with
|
|
Exynos3250 SoC for Dynamic Memory Controller domain.
|
|
- "samsung,exynos3250-cmu-isp" - ISP block clock controller compatible
|
|
with Exynos3250 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/exynos3250.h header and can be used in device
|
|
tree sources.
|
|
|
|
Example 1: Examples of clock controller nodes are listed below.
|
|
|
|
cmu: clock-controller@10030000 {
|
|
compatible = "samsung,exynos3250-cmu";
|
|
reg = <0x10030000 0x20000>;
|
|
#clock-cells = <1>;
|
|
};
|
|
|
|
cmu_dmc: clock-controller@105c0000 {
|
|
compatible = "samsung,exynos3250-cmu-dmc";
|
|
reg = <0x105C0000 0x2000>;
|
|
#clock-cells = <1>;
|
|
};
|
|
|
|
cmu_isp: clock-controller@10048000 {
|
|
compatible = "samsung,exynos3250-cmu-isp";
|
|
reg = <0x10048000 0x1000>;
|
|
#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@13800000 {
|
|
compatible = "samsung,exynos4210-uart";
|
|
reg = <0x13800000 0x100>;
|
|
interrupts = <0 109 0>;
|
|
clocks = <&cmu CLK_UART0>, <&cmu CLK_SCLK_UART0>;
|
|
clock-names = "uart", "clk_uart_baud0";
|
|
};
|