| * Samsung S3C2410 Clock Controller |
| |
| The S3C2410 clock controller generates and supplies clock to various controllers |
| within the SoC. The clock binding described here is applicable to the s3c2410, |
| s3c2440 and s3c2442 SoCs in the s3c24x family. |
| |
| Required Properties: |
| |
| - compatible: should be one of the following. |
| - "samsung,s3c2410-clock" - controller compatible with S3C2410 SoC. |
| - "samsung,s3c2440-clock" - controller compatible with S3C2440 SoC. |
| - "samsung,s3c2442-clock" - controller compatible with S3C2442 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. Some of the clocks are available only |
| on a particular SoC. |
| |
| All available clocks are defined as preprocessor macros in |
| dt-bindings/clock/s3c2410.h header and can be used in device |
| tree sources. |
| |
| External clocks: |
| |
| The xti clock used as input for the plls is generated outside the SoC. It is |
| expected that is are defined using standard clock bindings with a |
| clock-output-names value of "xti". |
| |
| Example: Clock controller node: |
| |
| clocks: clock-controller@4c000000 { |
| compatible = "samsung,s3c2410-clock"; |
| reg = <0x4c000000 0x20>; |
| #clock-cells = <1>; |
| }; |
| |
| Example: 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" properties): |
| |
| serial@50004000 { |
| compatible = "samsung,s3c2440-uart"; |
| reg = <0x50004000 0x4000>; |
| interrupts = <1 23 3 4>, <1 23 4 4>; |
| clock-names = "uart", "clk_uart_baud2"; |
| clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>; |
| status = "disabled"; |
| }; |