4 - compatible: should be "litex,pwm".
5 - reg: base address and length of the register set for this device.
6 - clock: frequency of the main clock.
7 - #pwm-cells: should be 6. See pwm.txt in this directory for a description of
14 compatible = "litex,pwm";
15 reg = <0x0 0xf0003000 0x0 0x24>;