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BCM2835 PWM controller (Raspberry Pi controller)
Required properties:
- compatible: should be "brcm,bcm2835-pwm"
- reg: physical base address and length of the controller's registers
- clock: This clock defines the base clock frequency of the PWM hardware
system, the period and the duty_cycle of the PWM signal is a multiple of
the base period.
- #pwm-cells: Should be 2. See pwm.txt in this directory for a description of
the cells format.
Examples:
pwm@2020c000 {
compatible = "brcm,bcm2835-pwm";
reg = <0x2020c000 0x28>;
clocks = <&clk_pwm>;
#pwm-cells = <2>;
};
clocks {
....
clk_pwm: pwm {
compatible = "fixed-clock";
reg = <3>;
#clock-cells = <0>;
clock-frequency = <9200000>;
};
....
};
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