From: Luotao Fu <l.fu@pengutronix.de>
To: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>
Cc: Luotao Fu <l.fu@pengutronix.de>,
gregkh@suse.de, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] USB: serial: add FTDI FT4232H ID
Date: Tue, 7 Apr 2009 11:03:53 +0200 [thread overview]
Message-ID: <20090407090353.GA12669@pengutronix.de> (raw)
In-Reply-To: <18907.3900.117808.251116@elektron.ikp.physik.tu-darmstadt.de>
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On Tue, Apr 07, 2009 at 10:30:52AM +0200, Uwe Bonnes wrote:
> >>>>> "Luotao" == Luotao Fu <l.fu@pengutronix.de> writes:
>
> Luotao> add the ID of FT4232H Hi-Speed quad channel serial converter.
>
> This probably isn't enough to make the devices work.
>
> The FT2232H and FT4432H are High Speed devices with defaul buffer sizes of
> 512 bytes. A recieve buffer contains two status bytes and then up to 510
> bytes of data against 62 bytes on the old devices.
Shame on me. I did only check whether the device with its four channels are
registered. Since the chip is built-in on our board and I still need some
additional libraries to check the devices connected to it. I haven't done any
function tests still. Will keep an eye on this. Sounds that it could be a little
hairy then. Afais the PID 6001 is e.g. shared by common/high speed devices. I
didn't grab deeper in the ftdi code, probably it'll be some way to work around
this.
cheers
Luotao Fu
--
Pengutronix e.K. | Dipl.-Ing. Luotao Fu |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2009-04-07 9:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-07 7:49 Luotao Fu
2009-04-07 8:30 ` Uwe Bonnes
2009-04-07 9:03 ` Luotao Fu [this message]
2009-04-07 9:45 ` Uwe Bonnes
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