linux-kernel - Re: [PATCH] USB: serial: ftdi_sio: implement GPIO support for FT230X

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Date:   Tue, 04 Sep 2018 18:07:49 +0000
From:   "Karoly Pados" <pados@...os.hu>
To:     "Johan Hovold" <johan@...nel.org>
Cc:     "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Loic Poulain" <loic.poulain@...aro.org>,
        andy.shevchenko@...il.com, ajaykuee@...il.com,
        daniel.thompson@...aro.org
Subject: Re: [PATCH] USB: serial: ftdi_sio: implement GPIO support for
 FT230X

>>> + priv->gc.ngpio = 4;
>> 
>> Shouldn't this be handled the other way round? IIRC there are two FTX
>> device types with four pins, and one type where only one pin is
>> accessible.
> 
> There are 4 devices with 1 GPIO, 1 device with 2 GPIOs, 2 devices with 4 GPIOs,
> and 1 device with 6 GPIOs. Source: http://www.ftdichip.com/FT-X.htm (2nd table)
> Do you still want me turn this over?
> 

Aaah, but those other devices are not UART bridges. I see what you mean now.
The point for me when developing th original patch