You are right, the problem is related with the PWMCLK parameter. Im currently working on a set of patches for the winbond family, including w83627 and w83697 to enable access to these registers. You may want to take a look at http://www.tinet.org/~com.ea/rtsensors/ that application works for w83697 and most likely for w83627 in the isa range. Regards Carlos http://www.tinet.org/~com.ea