MPC8360E USB Host Controller Driver

[Claus Gindhart]

Hi all,

i have a MPC8347E running with the Freescale E(F)HCI driver and Kernel 2.6.17 (Freescale LTIB).

Because of this mail, i checked, if there are any periodical interrupts, without real USB payload.

The result is: NO

If i attach a USB-mouse, i get 5 interrupts.
If i remove it again, 1 additional.

Nothing else, silence !

USB works well with USB 1.1 and 2.0 devices 
(This was not the case with earlier Kernels, e.g. 2.6.13, because for the switching between 1.1 and 2.0 you need a transaction translator driver).

-- 
Mit freundlichen Gruessen / Best regards

Claus Gindhart
SW R&D
Kontron Modular Computers
phone :++49 (0)8341-803-374
mailto:claus.gindhart at kontron-modular.com
http://www.kontron.com

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-----Original Message-----
From: linuxppc-embedded-bounces+claus.gindhart=kontron.com at ozlabs.org
[mailto:linuxppc-embedded-bounces+claus.gindhart=kontron.com at ozlabs.org]
On Behalf Of Alex Zeffertt
Sent: Donnerstag, 7. September 2006 12:59
To: Li Yang-r58472
Cc: n.balaji at gdatech.co.in; linuxppc-embedded at ozlabs.org
Subject: Re: MPC8360E USB Host Controller Driver


>> manual, they told that this controller does not belong to 
>> UHCI or OHCI standard.
> 
> Yes, you can call it FHCI if you like. :)

I heard that on the PQII (82xx) devices the FHCI required
intervention from the core, even when there was zero traffic
on the USB.  I think this was because the core had to
continuously service a 1ms interrupt.  This generates significant
extra loading, making it worth considering using a cheap EHCI chip
instead....

Does anyone know if this is still the case with the PQII Pro (83xx)?

Alex
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