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Re: [PATCH v6 10/10] serial: exar: Add support for IOT2040 device

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  Re: [PATCH v6 10/10] serial: exar: Add support for IOT2040 device Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-06-29 16:50 +0200

#1677829 — Re: [PATCH v6 10/10] serial: exar: Add support for IOT2040 device

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 <sascha.weisenberger@siemens.com>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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