On Fri, Jun 09, 2017 at 08:33:18PM +0200, Jan Kiszka wrote: > This implements the setup of RS232 and the switch-over to RS485 or RS422 > for the Siemens IOT2040. That uses an EXAR XR17V352 with external logic > to switch between the different modes. The external logic is controlled > via MPIO pins of the EXAR controller. > > Only pin 10 can be exported as GPIO on the IOT2040. It is connected to > an LED. > > As the XR17V352 used on the IOT2040 is not equipped with an external > EEPROM, it cannot present itself as IOT2040-variant via subvendor/ > subdevice IDs. Thus, we have to check via DMI for the target platform. > > Co-developed with Sascha Weisenberger. > > Signed-off-by: Sascha Weisenberger <[email protected]> > Signed-off-by: Jan Kiszka <[email protected]> > Reviewed-by: Andy Shevchenko <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
