Binding for an external clock signal driven by a PWM pin.
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This binding uses the common clock binding[1] and the common PWM binding[2].
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[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
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[2] Documentation/devicetree/bindings/pwm/pwm.txt
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Required properties:
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- compatible : shall be "pwm-clock".
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- #clock-cells : from common clock binding; shall be set to 0.
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- pwms : from common PWM binding; this determines the clock frequency
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via the period given in the PWM specifier.
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Optional properties:
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- clock-output-names : From common clock binding.
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- clock-frequency : Exact output frequency, in case the PWM period
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is not exact but was rounded to nanoseconds.
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Example:
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clock {
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compatible = "pwm-clock";
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#clock-cells = <0>;
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clock-frequency = <25000000>;
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clock-output-names = "mipi_mclk";
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pwms = <&pwm2 0 40>; /* 1 / 40 ns = 25 MHz */
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};
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