51 lines
1.7 KiB
Plaintext
51 lines
1.7 KiB
Plaintext
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* 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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status = "disabled";
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};
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