Re: More USB questions (for the MPC8xx)

Hi Christian,

if you use the virtual root hub (Patch 2) the root hub will
be controlled by the built in hub driver of the USB subsystem.
And this driver disables the port if it gets to much errors.
And a disable switches off the SOF.
D+ then goes up because a high speed device is connected to the bus.
D+/D-:
 0/0 if ther is no device or reset.
 1/0 full speed device
 0/1 low speed device
BTW. the HCD should use these signals to recognize a device
on the bus (unpached m8xxhci polls with control messages, patch 2 use
the bus signals)

As there should be no errors I guess you also need a hardware patch.

I would suggest you to use patch 1 only as long there are so much
errors/timeouts.

- Roman

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Re: More USB questions (for the MPC8xx)



      To: Kári Davíðsson [off-list ref]
      Subject: Re: More USB questions (for the MPC8xx)
      From: Christian Schroeder [off-list ref]
      Date: Wed, 21 Mar 2001 10:15:23 +0100 (MET)
      Cc: "Linux Embedded ppc (E-mail)" [off-list ref]
      In-Reply-To: [ref]
      References: [ref]
      User-Agent: IMP/PHP IMAP webmail program 2.2.2



Quoting Kári Davíðsson [off-list ref]:

quoted

Hi,

I managed to get the m8xxhci with the TIMER1 patch to sort of work with
my board.
I.e. the SOF seem to be genrated normally and there seem to be some
traffic on
the usb bus when I plug in keyspan_pda USB device. Althoug the
initialization of
the keyspan_pda fails.
I have also tried a MS USBMouse but then the m8xxhci is totally silent
and there
is no traffic on the USB.

What kind of USB devices have you used to plug to a MPC8xx in HIC mode?

Hi,


I have similar experiences. I use a TQM823L board and applied Roman Weiss-
gaerbers patches. The microcode patch seems to work, because I can see the
SOF packets every 1 ms between D+ and GND. If I disconnect /DREQ1, the
SOFs disappear. So far so good. Now I tried to connect USB devices.

First I connected an USB mouse and got:

rh::int:0 2 1 301 1
m8xxhci_alloc_dev(usb_dev=c0fcca00)
hub.c: USB new device connect on bus1/1, assigned device number 2
usb_control/bulk_msg: timeout
unlink_urb(urb=c04b5f50,qtype=2) status -115
unlink_urb(urb=c04b5f50) done
usb.c: USB device not accepting new address=2 (error=-110)
m8xxhci_free_dev(usb_dev=c0fcca00)
m8xxhci_free_dev(dev=c0fcca00) done
m8xxhci_alloc_dev(usb_dev=c0fcca00)
hub.c: USB new device connect on bus1/1, assigned device number 3
usb_control/bulk_msg: timeout
unlink_urb(urb=c04b5f50,qtype=2) status -115
unlink_urb(urb=c04b5f50) done
usb.c: USB device not accepting new address=3 (error=-110)
m8xxhci_free_dev(usb_dev=c0fcca00)
m8xxhci_free_dev(dev=c0fcca00) done

The SOFs disappear completely and I cannot see any traffic
between D+ and GND. The D+ Line goes up (about 3 V).

If I connct a Thunderbird 4-port USB hub, I get:

rh::int:0 2 2 101 1
m8xxhci_alloc_dev(usb_dev=c0fcca00)
hub.c: USB new device connect on bus1/1, assigned device number 2
rx err sc (status 0x1c54)
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
usb.c: USB device not responding, giving up (error=-110)
m8xxhci_free_dev(usb_dev=c0fcca00)
m8xxhci_free_dev(dev=c0fcca00) done
m8xxhci_alloc_dev(usb_dev=c0fcca00)
hub.c: USB new device connect on bus1/1, assigned device number 3
complete urb c04b5f50, actual_length 8, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 8, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 8, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
complete urb c04b5f50, actual_length 8, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
rx err sc (status 0x1c44)
complete urb c04b5f50, actual_length 0, status -1
unlink_urb(urb=c04b5f50,qtype=2) status -110
unlink_urb(urb=c04b5f50) done
usb.c: USB device not responding, giving up (error=-110)
m8xxhci_free_dev(usb_dev=c0fcca00)
m8xxhci_free_dev(dev=c0fcca00) done

The SOFs disappear too!

In some rare cases (when I connect a HUB), the SOFs don't
disappear. In this cases the 4-port HUB is recognized
partially.


Christian Schroeder

Dr.-Ing. Christian Schroeder
Institut fuer Mikroelektronik- und Mechatronik-Systeme
Langewiesener Strasse 22
98693 Ilmenau
Telefon: +49 3677 678315
Telefax: +49 3677 678337
Mobil:   +49 173 5789172
e-mail:  christian.schroeder@imms.de
www:     http://www.imms.de/~christi/cs.html
pgp:     finger christi@finger.imms.de




      References:
            More USB questions (for the MPC8xx)
                  From: Kári Davíðsson [off-list ref]
            More USB questions (for the MPC8xx)
                  From: Kári Davíðsson [off-list ref]

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