1* 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 - "samsung,exynos3250-cmu-dmc" - controller compatible with 11 Exynos3250 SoC for Dynamic Memory Controller domain. 12 - "samsung,exynos3250-cmu-isp" - ISP block clock controller compatible 13 with Exynos3250 SOC 14 15- reg: physical base address of the controller and length of memory mapped 16 region. 17 18- #clock-cells: should be 1. 19 20Each clock is assigned an identifier and client nodes can use this identifier 21to specify the clock which they consume. 22 23All available clocks are defined as preprocessor macros in 24dt-bindings/clock/exynos3250.h header and can be used in device 25tree sources. 26 27Example 1: Examples of clock controller nodes are listed below. 28 29 cmu: clock-controller@10030000 { 30 compatible = "samsung,exynos3250-cmu"; 31 reg = <0x10030000 0x20000>; 32 #clock-cells = <1>; 33 }; 34 35 cmu_dmc: clock-controller@105c0000 { 36 compatible = "samsung,exynos3250-cmu-dmc"; 37 reg = <0x105C0000 0x2000>; 38 #clock-cells = <1>; 39 }; 40 41 cmu_isp: clock-controller@10048000 { 42 compatible = "samsung,exynos3250-cmu-isp"; 43 reg = <0x10048000 0x1000>; 44 #clock-cells = <1>; 45 }; 46 47Example 2: UART controller node that consumes the clock generated by the clock 48 controller. Refer to the standard clock bindings for information 49 about 'clocks' and 'clock-names' property. 50 51 serial@13800000 { 52 compatible = "samsung,exynos4210-uart"; 53 reg = <0x13800000 0x100>; 54 interrupts = <0 109 0>; 55 clocks = <&cmu CLK_UART0>, <&cmu CLK_SCLK_UART0>; 56 clock-names = "uart", "clk_uart_baud0"; 57 }; 58