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49 lines
1.7 KiB
49 lines
1.7 KiB
* Samsung S3C2410 Clock Controller |
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The S3C2410 clock controller generates and supplies clock to various controllers |
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within the SoC. The clock binding described here is applicable to the s3c2410, |
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s3c2440 and s3c2442 SoCs in the s3c24x family. |
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Required Properties: |
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- compatible: should be one of the following. |
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- "samsung,s3c2410-clock" - controller compatible with S3C2410 SoC. |
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- "samsung,s3c2440-clock" - controller compatible with S3C2440 SoC. |
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- "samsung,s3c2442-clock" - controller compatible with S3C2442 SoC. |
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- reg: physical base address of the controller and length of memory mapped |
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region. |
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- #clock-cells: should be 1. |
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Each clock is assigned an identifier and client nodes can use this identifier |
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to specify the clock which they consume. Some of the clocks are available only |
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on a particular SoC. |
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All available clocks are defined as preprocessor macros in |
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dt-bindings/clock/s3c2410.h header and can be used in device |
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tree sources. |
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External clocks: |
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The xti clock used as input for the plls is generated outside the SoC. It is |
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expected that is are defined using standard clock bindings with a |
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clock-output-names value of "xti". |
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Example: Clock controller node: |
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clocks: clock-controller@4c000000 { |
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compatible = "samsung,s3c2410-clock"; |
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reg = <0x4c000000 0x20>; |
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#clock-cells = <1>; |
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}; |
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Example: UART controller node that consumes the clock generated by the clock |
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controller (refer to the standard clock bindings for information about |
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"clocks" and "clock-names" properties): |
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serial@50004000 { |
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compatible = "samsung,s3c2440-uart"; |
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reg = <0x50004000 0x4000>; |
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interrupts = <1 23 3 4>, <1 23 4 4>; |
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clock-names = "uart", "clk_uart_baud2"; |
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clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>; |
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};
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