Messages in this thread | | | Date | Tue, 7 Apr 2009 11:03:53 +0200 | From | Luotao Fu <> | Subject | Re: [PATCH] USB: serial: add FTDI FT4232H ID |
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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/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | [unhandled content-type:application/pgp-signature] | |