46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
* Amlogic GXBB AO Clock and Reset Unit
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The Amlogic GXBB AO clock controller generates and supplies clock to various
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controllers within the Always-On part of the SoC.
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Required Properties:
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- compatible: should be "amlogic,gxbb-aoclkc"
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- reg: physical base address of the clock controller and length of memory
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mapped 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. All available clocks are defined as
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preprocessor macros in the dt-bindings/clock/gxbb-aoclkc.h header and can be
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used in device tree sources.
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- #reset-cells: should be 1.
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Each reset is assigned an identifier and client nodes can use this identifier
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to specify the reset which they consume. All available resets are defined as
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preprocessor macros in the dt-bindings/reset/gxbb-aoclkc.h header and can be
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used in device tree sources.
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Example: AO Clock controller node:
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clkc_AO: clock-controller@040 {
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compatible = "amlogic,gxbb-aoclkc";
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reg = <0x0 0x040 0x0 0x4>;
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#clock-cells = <1>;
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#reset-cells = <1>;
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};
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Example: UART controller node that consumes the clock and reset generated
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by the clock controller:
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uart_AO: serial@4c0 {
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compatible = "amlogic,meson-uart";
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reg = <0x4c0 0x14>;
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interrupts = <0 90 1>;
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clocks = <&clkc_AO CLKID_AO_UART1>;
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resets = <&clkc_AO RESET_AO_UART1>;
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status = "disabled";
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};
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