Using PWM from sysfs

following Instuction only works for Linux kernel 3.11 or greater

Where to find PWM devices in sysfs

PWM devices are listed under /sys/class/pwm

Enable PWM device

root@MBaXXX:~ cd /sys/class/pwm                                                   // enter pwm folder in sysfs
root@MBaXXX:/sys/class/pwm cd pwmchip<pwmchipnr>                                  // enter the desired pwmchip folder
root@MBaXXX:/sys/your/path/to/pwmchip/pwmchip<pwmchipnr> echo <pwmnr> > export    // export device PWM<pwmnr> 
root@MBaXXX:/sys/your/path/to/pwmchip/pwmchip<pwmchipnr> cd pwm<pwmnr>            // enter exported pwm device folder

example

Disclaimer
TQ-Systems GmbH provides the Board Support Packages (BSP) free of charge. The software included in the shipment has been configured individually for the starter kits. The software is only intended to evaluate the module. The use of the Board Support Packages (BSP) is only allowed within the scope of functionality described by TQ-Systems GmbH. TQ-Systems GmbH does not accept any liability for all further changes of the Board Support Package and for any damage resulting from its use.