Hi, just looked a bit around in the source and stumbled across drivers/mfd/rn5t568.c It contains * MFD core driver for Ricoh RN5T618 PMIC but the filename is rn5t568.c That is very confusing. a compatible ricoh,rn5t568 (but 567) does not exist in the kernel. So which chip this is really about? Did not analyse things deeper yet. I am also curious because I wrote most stuff in the kernel about the rn5t618/rc5t619. Regards, Andreas