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This patch adds a DT binding documentation for Fixed Memory Mapped IO clocks. Signed-off-by: Jan Kotas <jank@cadence.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
24 lines
766 B
Text
24 lines
766 B
Text
Binding for simple memory mapped io fixed-rate clock sources.
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The driver reads a clock frequency value from a single 32-bit memory mapped
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I/O register and registers it as a fixed rate clock.
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It was designed for test systems, like FPGA, not for complete, finished SoCs.
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This binding uses the common clock binding[1].
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[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
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Required properties:
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- compatible : shall be "fixed-mmio-clock".
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- #clock-cells : from common clock binding; shall be set to 0.
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- reg : Address and length of the clock value register set.
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Optional properties:
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- clock-output-names : From common clock binding.
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Example:
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sysclock: sysclock@fd020004 {
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#clock-cells = <0>;
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compatible = "fixed-mmio-clock";
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reg = <0xfd020004 0x4>;
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};
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