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