linux-kernel - Re: [PATCH v4 9/9] serial: exar: Add support for IOT2040 device

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Message-ID: <CAHp75VeUp_Ucg81BEL45P=dQVst_TMV2azcESB6-zFWm3oARPg@mail.gmail.com>
Date:   Tue, 30 May 2017 21:38:02 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>,
        Sascha Weisenberger <sascha.weisenberger@...mens.com>
Subject: Re: [PATCH v4 9/9] serial: exar: Add support for IOT2040 device

On Tue, May 30, 2017 at 10:01 AM, Jan Kiszka <jan.kiszka@...mens.com> 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.

Take into consideration comments per patch 2.
Otherwise looks good to me.

-- 
With Best Regards,
Andy Shevchenko