linux-kernel - Re: [PATCH] USB: serial: ftdi_sio: only bind FT232H if UART mode is enabled

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Message-ID: <20170719090311.GV29638@localhost>
Date:   Wed, 19 Jul 2017 11:03:11 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Anatolij Gustschin <agust@...x.de>
Cc:     Johan Hovold <johan@...nel.org>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] USB: serial: ftdi_sio: only bind FT232H if UART mode is
 enabled

On Thu, Jul 13, 2017 at 06:25:25PM +0200, Anatolij Gustschin wrote:
> On FT232H the interface mode can be configured in the EEPROM,
> and the async UART mode is configured by default. The chip is
> also in async UART mode if no EEPROM is connected.
> 
> Check the EEPROM configuration and do not bind as serial device
> when different interface mode is programmed in the EEPROM.

Thanks for the patch. As you may have inferred from my reply to your MFD
series, this won't be needed for a while still however.

Also note that some people already use asynchronous FIFO mode using this
driver (also mentioned in the datasheets as an option) so only binding
in UART mode would be too restrictive.

Thanks,
Johan