Add support for voltage, current, and temperature peak (historic maximum) attributes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
MAX8688 has its own driver, thus should have its own documentation instead of being mentioned in the generic PMBus driver documentation. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>