1* PWM controlled by ChromeOS EC 2 3Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller 4(EC) and controlled via a host-command interface. 5 6An EC PWM node should be only found as a sub-node of the EC node (see 7Documentation/devicetree/bindings/mfd/cros-ec.txt). 8 9Required properties: 10- compatible: Must contain "google,cros-ec-pwm" 11- #pwm-cells: Should be 1. The cell specifies the PWM index. 12 13Example: 14 cros-ec@0 { 15 compatible = "google,cros-ec-spi"; 16 17 ... 18 19 cros_ec_pwm: ec-pwm { 20 compatible = "google,cros-ec-pwm"; 21 #pwm-cells = <1>; 22 }; 23 }; 24