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Linux_Drivers/linux_5.10/Documentation/devicetree/bindings/clock/fixed-mmio-clock.txt
sam.xiang 5c7dd7acc3 [linux] create linux_5.10.4 from T-head official:
repo: https://github.com/T-head-Semi/linux
	commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb

Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
2023-03-10 20:32:41 +08:00

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Binding for simple memory mapped io fixed-rate clock sources.
The driver reads a clock frequency value from a single 32-bit memory mapped
I/O register and registers it as a fixed rate clock.
It was designed for test systems, like FPGA, not for complete, finished SoCs.
This binding uses the common clock binding[1].
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
Required properties:
- compatible : shall be "fixed-mmio-clock".
- #clock-cells : from common clock binding; shall be set to 0.
- reg : Address and length of the clock value register set.
Optional properties:
- clock-output-names : From common clock binding.
Example:
sysclock: sysclock@fd020004 {
#clock-cells = <0>;
compatible = "fixed-mmio-clock";
reg = <0xfd020004 0x4>;
};