1* Samsung S3C2410 Clock Controller 2 3The S3C2410 clock controller generates and supplies clock to various controllers 4within the SoC. The clock binding described here is applicable to the s3c2410, 5s3c2440 and s3c2442 SoCs in the s3c24x family. 6 7Required Properties: 8 9- compatible: should be one of the following. 10 - "samsung,s3c2410-clock" - controller compatible with S3C2410 SoC. 11 - "samsung,s3c2440-clock" - controller compatible with S3C2440 SoC. 12 - "samsung,s3c2442-clock" - controller compatible with S3C2442 SoC. 13- reg: physical base address of the controller and length of memory mapped 14 region. 15- #clock-cells: should be 1. 16 17Each clock is assigned an identifier and client nodes can use this identifier 18to specify the clock which they consume. Some of the clocks are available only 19on a particular SoC. 20 21All available clocks are defined as preprocessor macros in 22dt-bindings/clock/s3c2410.h header and can be used in device 23tree sources. 24 25External clocks: 26 27The xti clock used as input for the plls is generated outside the SoC. It is 28expected that is are defined using standard clock bindings with a 29clock-output-names value of "xti". 30 31Example: Clock controller node: 32 33 clocks: clock-controller@4c000000 { 34 compatible = "samsung,s3c2410-clock"; 35 reg = <0x4c000000 0x20>; 36 #clock-cells = <1>; 37 }; 38 39Example: UART controller node that consumes the clock generated by the clock 40 controller (refer to the standard clock bindings for information about 41 "clocks" and "clock-names" properties): 42 43 serial@50004000 { 44 compatible = "samsung,s3c2440-uart"; 45 reg = <0x50004000 0x4000>; 46 interrupts = <1 23 3 4>, <1 23 4 4>; 47 clock-names = "uart", "clk_uart_baud2"; 48 clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>; 49 }; 50