Hi! > This is for the development kit board for the Librem 5. The current level > of support yields a working console and is able to boot userspace from > the network or eMMC. > > Additional subsystems that are active : > - haptic motor Haptic motor is not a LED. It should be controlled by input subsystem. > + pwmleds { > + compatible = "pwm-leds"; > + > + haptic { > + label = "librem5::haptic"; > + pwms = <&pwm2 0 200000>; > + active-low; > + max-brightness = <255>; > + power-supply = <®_3v3_p>; > + }; > + }; You can take a look at N900, that has reasonable interface. Thanks, Pavel