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Re: USB slave

To: Simone Vellei <simone.vellei@xxxxxxxxxxxxxxxxxxx>
Subject: Re: USB slave
From: Jachym Holecek <freza@xxxxxxxxxxx>
Date: Thu, 30 Mar 2006 18:46:46 +0200
Cc: Jachym Holecek <freza@xxxxxxxxxxx>, dev-etrax <dev-etrax@xxxxxxxx>
In-reply-to: <442C01E3.10407@xxxxxxx.com>
References: <BFECAF9E178F144FAEF2BF4CE739C668038E94A1@xxxxxxx.com> <442B8B79.6020708@xxxxxxx.com> <20060330151631.GA1464@xxxxxxx.cz> <442C01E3.10407@xxxxxxx.com>
Reply-to: Jachym Holecek <freza@xxxxxxxxxxx>
Sender: owner-dev-etrax@xxxxxxxx
User-agent: Mutt/1.4.2.1i

> Ok, I'm reading some specification and code of linux-2.4 usb-gadget 
> support...I noticed that i must have a USB device controller (such as 
> NetChip-2280 or Toshiba-TC86C001) connected to PCI bus.

Not quite. This is the part you want to write -- Etrax USB controller
in device mode to provide "USB gadget controller" driver, on which you
can connect (controller independent) "USB gadget" drivers, such as
ether.c.

> The "gadget-zero" driver (a skeleton for usb gadget development) depends 
> from CONFIG_PCI...so I think that without a PCI bus (and related usb 
> device controller) we can't develop a kernel driver for this device.

Nope, as far as I can see at a glance. The PCI devices you quote are
just particular USB gadget controllers that happen to live on PCI.

	-- Jachym

Follow-Ups:
- Re: USB slave
  - From: Tomasz Motylewski

References:
- RE: USB slave
  - From: Mikael Starvik
- Re: USB slave
  - From: Simone Vellei
- Re: USB slave
  - From: Jachym Holecek
- Re: USB slave
  - From: Simone Vellei

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