1&pwm0 { 2 status = "disabled"; 3}; 4 5&sw_pwm { 6 status = "okay"; 7 channel-gpios = <&gpio0 28 PWM_POLARITY_INVERTED>; 8}; 9 10&pwm_led0 { 11 pwms = <&sw_pwm 0 PWM_MSEC(20) PWM_POLARITY_INVERTED>; 12}; 13