| * 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"; |
| }; |