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* USB host on 83xx
@ 2010-01-27 20:20 Gary Thomas
  2010-01-28  0:05 ` Gary Thomas
  0 siblings, 1 reply; 4+ messages in thread
From: Gary Thomas @ 2010-01-27 20:20 UTC (permalink / raw)
  To: linuxppc-dev

I have two nearly identical boards, with very different behavior.

Older 8347 (PVR: 0x80830011)
New   8347 (PVR: 0x80830031)

I've tried a number of kernels (vintages) on both with wild results.

2.6.20   - Same kernel works on both(*)
2.6.28   - Kernel runs great on OLD, machine check on NEW
2.6.32.6 - Ditto

The problem occurs (only on the new silicon) during the USB host
initialization.  The root hub is found and initialized, then the
EHCI subsystem is reset (to force it to find siblings on the bus).
This results in a machine check at the point where the PHY is
being reinitialized.

I've peppered the driver with messages - here's what I see:

     ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
     fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
     fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
     ********** ehci_fsl_setup.272
     ********** ehci_fsl_setup.296
     ********** ehci_fsl_setup.299
     ********** ehci_fsl_reinit.257
     ********** mpc83xx_usb_setup.192
     ********** mpc83xx_usb_setup.207
     ********** mpc83xx_usb_setup.215
     ********** mpc83xx_usb_setup.220
     ********** mpc83xx_setup_phy.163
     ********** mpc83xx_setup_phy.180
     ********** mpc83xx_setup_phy.182
     ********** mpc83xx_usb_setup.238
     ********** mpc83xx_usb_setup.245
     ********** mpc83xx_usb_setup.249
     ********** mpc83xx_usb_setup.251
     ********** ehci_fsl_reinit.259
     ********** ehci_hub_control.559 - req: 8961
     ********** ehci_hub_control.574
     ********** ehci_hub_control.559 - req: 8961
     ********** ehci_hub_control.574
     ********** ehci_fsl_reinit.261
     ********** ehci_fsl_setup.301
     fsl-ehci fsl-ehci.0: irq 39, io base 0xff022000
     fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00
     usb usb1: configuration #1 chosen from 1 choice
     hub 1-0:1.0: USB hub found
     ********** ehci_hub_control.559 - req: 40966
     ********** ehci_hub_control.637
     hub 1-0:1.0: 2 ports detected
     ********** ehci_hub_control.559 - req: 40960
     ********** ehci_hub_control.642
     ********** ehci_hub_control.559 - req: 8963
     ********** ehci_hub_control.805
     ********** ehci_hub_control.559 - req: 8963
     ********** ehci_hub_control.805
     usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
     usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
     usb usb1: Product: Freescale On-Chip EHCI Host Controller
     usb usb1: Manufacturer: Linux 2.6.28 ehci_hcd
     usb usb1: SerialNumber: fsl-ehci.0
     fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller
     fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2
     ********** ehci_fsl_setup.272
     ********** ehci_fsl_setup.296
     ********** ehci_fsl_setup.299
     ********** ehci_fsl_reinit.257
     ********** mpc83xx_usb_setup.192
     ********** mpc83xx_usb_setup.207
     ********** mpc83xx_usb_setup.215
     ********** mpc83xx_setup_phy.163
     ********** mpc83xx_setup_phy.180
       MACHINE CHECK - so dead it can't even print the message!

At this point, it should carry on like this:

     ********** ehci_hub_control.559 - req: 8963
     ********** ehci_hub_control.805
     ********** ehci_hub_control.559 - req: 41728
     ********** ehci_hub_control.648
     ********** ehci_hub_control.559 - req: 8961
     ********** ehci_hub_control.574
     usb 1-1: configuration #1 chosen from 1 choice
     hub 1-1:1.0: USB hub found
     hub 1-1:1.0: 4 ports detected
     usb 1-1: New USB device found, idVendor=05e3, idProduct=0608
     usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
     usb 1-1: Product: USB2.0 Hub
     ********** ehci_hub_control.559 - req: 41728
     ********** ehci_hub_control.648

You can see that it successfully found the connected external HUB.

Any ideas why this happens?  This [basic] code used to work (2.6.20)
on both platforms.  I know that's a long time ago, but MACHINE CHECK??

(*) To get this platform to run 2.6.20, I had to patch the CPU tables
to recognize it as 8347 (kernels of that vintage relied on the SVR to
make choices, not PVR)

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: USB host on 83xx
  2010-01-27 20:20 USB host on 83xx Gary Thomas
@ 2010-01-28  0:05 ` Gary Thomas
  2010-01-28 12:17   ` Gary Thomas
  0 siblings, 1 reply; 4+ messages in thread
From: Gary Thomas @ 2010-01-28  0:05 UTC (permalink / raw)
  To: linuxppc-dev

On 01/27/2010 01:20 PM, Gary Thomas wrote:
> I have two nearly identical boards, with very different behavior.
>
> Older 8347 (PVR: 0x80830011)
> New 8347 (PVR: 0x80830031)

I lied (more precisely I was lied to and I passed it on - I've never
seen these boards in person, just worked on them from thousands of
miles away).

The boards have more than a rev difference:
   OLD - 8347EA (SVR: 0x80540011, PVR: 0x80830011)
   NEW - 8343E  (SVR: 0x80570030, PVR: 0x80830031)

Could this have any bearing on the problems?

> I've tried a number of kernels (vintages) on both with wild results.
>
> 2.6.20 - Same kernel works on both(*)
> 2.6.28 - Kernel runs great on OLD, machine check on NEW
> 2.6.32.6 - Ditto
>
> The problem occurs (only on the new silicon) during the USB host
> initialization. The root hub is found and initialized, then the
> EHCI subsystem is reset (to force it to find siblings on the bus).
> This results in a machine check at the point where the PHY is
> being reinitialized.
>
> I've peppered the driver with messages - here's what I see:
>
> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
> fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
> ********** ehci_fsl_setup.272
> ********** ehci_fsl_setup.296
> ********** ehci_fsl_setup.299
> ********** ehci_fsl_reinit.257
> ********** mpc83xx_usb_setup.192
> ********** mpc83xx_usb_setup.207
> ********** mpc83xx_usb_setup.215
> ********** mpc83xx_usb_setup.220
> ********** mpc83xx_setup_phy.163
> ********** mpc83xx_setup_phy.180
> ********** mpc83xx_setup_phy.182
> ********** mpc83xx_usb_setup.238
> ********** mpc83xx_usb_setup.245
> ********** mpc83xx_usb_setup.249
> ********** mpc83xx_usb_setup.251
> ********** ehci_fsl_reinit.259
> ********** ehci_hub_control.559 - req: 8961
> ********** ehci_hub_control.574
> ********** ehci_hub_control.559 - req: 8961
> ********** ehci_hub_control.574
> ********** ehci_fsl_reinit.261
> ********** ehci_fsl_setup.301
> fsl-ehci fsl-ehci.0: irq 39, io base 0xff022000
> fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00
> usb usb1: configuration #1 chosen from 1 choice
> hub 1-0:1.0: USB hub found
> ********** ehci_hub_control.559 - req: 40966
> ********** ehci_hub_control.637
> hub 1-0:1.0: 2 ports detected
> ********** ehci_hub_control.559 - req: 40960
> ********** ehci_hub_control.642
> ********** ehci_hub_control.559 - req: 8963
> ********** ehci_hub_control.805
> ********** ehci_hub_control.559 - req: 8963
> ********** ehci_hub_control.805
> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> usb usb1: Product: Freescale On-Chip EHCI Host Controller
> usb usb1: Manufacturer: Linux 2.6.28 ehci_hcd
> usb usb1: SerialNumber: fsl-ehci.0
> fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller
> fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2
> ********** ehci_fsl_setup.272
> ********** ehci_fsl_setup.296
> ********** ehci_fsl_setup.299
> ********** ehci_fsl_reinit.257
> ********** mpc83xx_usb_setup.192
> ********** mpc83xx_usb_setup.207
> ********** mpc83xx_usb_setup.215
> ********** mpc83xx_setup_phy.163
> ********** mpc83xx_setup_phy.180
> MACHINE CHECK - so dead it can't even print the message!
>
> At this point, it should carry on like this:
>
> ********** ehci_hub_control.559 - req: 8963
> ********** ehci_hub_control.805
> ********** ehci_hub_control.559 - req: 41728
> ********** ehci_hub_control.648
> ********** ehci_hub_control.559 - req: 8961
> ********** ehci_hub_control.574
> usb 1-1: configuration #1 chosen from 1 choice
> hub 1-1:1.0: USB hub found
> hub 1-1:1.0: 4 ports detected
> usb 1-1: New USB device found, idVendor=05e3, idProduct=0608
> usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
> usb 1-1: Product: USB2.0 Hub
> ********** ehci_hub_control.559 - req: 41728
> ********** ehci_hub_control.648
>
> You can see that it successfully found the connected external HUB.
>
> Any ideas why this happens? This [basic] code used to work (2.6.20)
> on both platforms. I know that's a long time ago, but MACHINE CHECK??
>
> (*) To get this platform to run 2.6.20, I had to patch the CPU tables
> to recognize it as 8347 (kernels of that vintage relied on the SVR to
> make choices, not PVR)
>

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: USB host on 83xx
  2010-01-28  0:05 ` Gary Thomas
@ 2010-01-28 12:17   ` Gary Thomas
  2010-01-28 13:20     ` Gary Thomas
  0 siblings, 1 reply; 4+ messages in thread
From: Gary Thomas @ 2010-01-28 12:17 UTC (permalink / raw)
  To: linuxppc-dev

On 01/27/2010 05:05 PM, Gary Thomas wrote:
> On 01/27/2010 01:20 PM, Gary Thomas wrote:
>> I have two nearly identical boards, with very different behavior.
>>
>> Older 8347 (PVR: 0x80830011)
>> New 8347 (PVR: 0x80830031)
>
> I lied (more precisely I was lied to and I passed it on - I've never
> seen these boards in person, just worked on them from thousands of
> miles away).
>
> The boards have more than a rev difference:
> OLD - 8347EA (SVR: 0x80540011, PVR: 0x80830011)
> NEW - 8343E (SVR: 0x80570030, PVR: 0x80830031)

This turned out to be a powerup/strapping issue.  This is now fixed
and the SVR is 0x80550030 on the failing board.  No change in behavior.

Does anyone have any ideas about this?

>
> Could this have any bearing on the problems?
>
>> I've tried a number of kernels (vintages) on both with wild results.
>>
>> 2.6.20 - Same kernel works on both(*)
>> 2.6.28 - Kernel runs great on OLD, machine check on NEW
>> 2.6.32.6 - Ditto
>>
>> The problem occurs (only on the new silicon) during the USB host
>> initialization. The root hub is found and initialized, then the
>> EHCI subsystem is reset (to force it to find siblings on the bus).
>> This results in a machine check at the point where the PHY is
>> being reinitialized.
>>
>> I've peppered the driver with messages - here's what I see:
>>
>> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>> fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
>> fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
>> ********** ehci_fsl_setup.272
>> ********** ehci_fsl_setup.296
>> ********** ehci_fsl_setup.299
>> ********** ehci_fsl_reinit.257
>> ********** mpc83xx_usb_setup.192
>> ********** mpc83xx_usb_setup.207
>> ********** mpc83xx_usb_setup.215
>> ********** mpc83xx_usb_setup.220
>> ********** mpc83xx_setup_phy.163
>> ********** mpc83xx_setup_phy.180
>> ********** mpc83xx_setup_phy.182
>> ********** mpc83xx_usb_setup.238
>> ********** mpc83xx_usb_setup.245
>> ********** mpc83xx_usb_setup.249
>> ********** mpc83xx_usb_setup.251
>> ********** ehci_fsl_reinit.259
>> ********** ehci_hub_control.559 - req: 8961
>> ********** ehci_hub_control.574
>> ********** ehci_hub_control.559 - req: 8961
>> ********** ehci_hub_control.574
>> ********** ehci_fsl_reinit.261
>> ********** ehci_fsl_setup.301
>> fsl-ehci fsl-ehci.0: irq 39, io base 0xff022000
>> fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00
>> usb usb1: configuration #1 chosen from 1 choice
>> hub 1-0:1.0: USB hub found
>> ********** ehci_hub_control.559 - req: 40966
>> ********** ehci_hub_control.637
>> hub 1-0:1.0: 2 ports detected
>> ********** ehci_hub_control.559 - req: 40960
>> ********** ehci_hub_control.642
>> ********** ehci_hub_control.559 - req: 8963
>> ********** ehci_hub_control.805
>> ********** ehci_hub_control.559 - req: 8963
>> ********** ehci_hub_control.805
>> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
>> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>> usb usb1: Product: Freescale On-Chip EHCI Host Controller
>> usb usb1: Manufacturer: Linux 2.6.28 ehci_hcd
>> usb usb1: SerialNumber: fsl-ehci.0
>> fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller
>> fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2
>> ********** ehci_fsl_setup.272
>> ********** ehci_fsl_setup.296
>> ********** ehci_fsl_setup.299
>> ********** ehci_fsl_reinit.257
>> ********** mpc83xx_usb_setup.192
>> ********** mpc83xx_usb_setup.207
>> ********** mpc83xx_usb_setup.215
>> ********** mpc83xx_setup_phy.163
>> ********** mpc83xx_setup_phy.180
>> MACHINE CHECK - so dead it can't even print the message!
>>
>> At this point, it should carry on like this:
>>
>> ********** ehci_hub_control.559 - req: 8963
>> ********** ehci_hub_control.805
>> ********** ehci_hub_control.559 - req: 41728
>> ********** ehci_hub_control.648
>> ********** ehci_hub_control.559 - req: 8961
>> ********** ehci_hub_control.574
>> usb 1-1: configuration #1 chosen from 1 choice
>> hub 1-1:1.0: USB hub found
>> hub 1-1:1.0: 4 ports detected
>> usb 1-1: New USB device found, idVendor=05e3, idProduct=0608
>> usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
>> usb 1-1: Product: USB2.0 Hub
>> ********** ehci_hub_control.559 - req: 41728
>> ********** ehci_hub_control.648
>>
>> You can see that it successfully found the connected external HUB.
>>
>> Any ideas why this happens? This [basic] code used to work (2.6.20)
>> on both platforms. I know that's a long time ago, but MACHINE CHECK??
>>
>> (*) To get this platform to run 2.6.20, I had to patch the CPU tables
>> to recognize it as 8347 (kernels of that vintage relied on the SVR to
>> make choices, not PVR)
>>
>

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: USB host on 83xx
  2010-01-28 12:17   ` Gary Thomas
@ 2010-01-28 13:20     ` Gary Thomas
  0 siblings, 0 replies; 4+ messages in thread
From: Gary Thomas @ 2010-01-28 13:20 UTC (permalink / raw)
  To: linuxppc-dev

On 01/28/2010 05:17 AM, Gary Thomas wrote:
> On 01/27/2010 05:05 PM, Gary Thomas wrote:
>> On 01/27/2010 01:20 PM, Gary Thomas wrote:
>>> I have two nearly identical boards, with very different behavior.
>>>
>>> Older 8347 (PVR: 0x80830011)
>>> New 8347 (PVR: 0x80830031)
>>
>> I lied (more precisely I was lied to and I passed it on - I've never
>> seen these boards in person, just worked on them from thousands of
>> miles away).
>>
>> The boards have more than a rev difference:
>> OLD - 8347EA (SVR: 0x80540011, PVR: 0x80830011)
>> NEW - 8343E (SVR: 0x80570030, PVR: 0x80830031)
>
> This turned out to be a powerup/strapping issue. This is now fixed
> and the SVR is 0x80550030 on the failing board. No change in behavior.
>
> Does anyone have any ideas about this?
>

Even more data; it turns out that after the first write to the USB/DR
port status/control register, the processor is dead :-(  Using a BDI:

** Dump the USB/DR machine registers
asp8347>md 0xff023100
ff023100 : 40000001 11000100 06000000 00000000  @...............
ff023110 : 00000000 00000000 00000000 00000000  ................
ff023120 : 01000000 86010000 00000000 00000000  ................
ff023130 : 00000000 00000000 00000000 00000000  ................
ff023140 : 00000800 00000000 00000000 00000000  ................
ff023150 : 00000000 00000000 00000000 00000000  ................
ff023160 : 10100000 00000000 00000000 00000000  ................
ff023170 : 00000008 00000000 00000000 00000000  ................
ff023180 : 01000000 00000090 00000000 00000000  ................
ff023190 : 00000000 00000000 00000000 00000000  ................
ff0231a0 : 00000000 20100000 00000000 00000000  .... ...........
ff0231b0 : 00000000 00000000 00000000 00000000  ................
ff0231c0 : 80008000 00000000 00000000 00000000  ................
ff0231d0 : 00000000 00000000 00000000 00000000  ................
ff0231e0 : 00000000 00000000 00000000 00000000  ................
ff0231f0 : 00000000 00000000 00000000 00000000  ................

** Write to the port status/control register
asp8347>mm 0xff023184 0x80

** Display the USB/DR registers
asp8347>md 0xff023100
# SAP: read access failed

This of course works fine on the 1.1 silicon.

>>
>> Could this have any bearing on the problems?
>>
>>> I've tried a number of kernels (vintages) on both with wild results.
>>>
>>> 2.6.20 - Same kernel works on both(*)
>>> 2.6.28 - Kernel runs great on OLD, machine check on NEW
>>> 2.6.32.6 - Ditto
>>>
>>> The problem occurs (only on the new silicon) during the USB host
>>> initialization. The root hub is found and initialized, then the
>>> EHCI subsystem is reset (to force it to find siblings on the bus).
>>> This results in a machine check at the point where the PHY is
>>> being reinitialized.
>>>
>>> I've peppered the driver with messages - here's what I see:
>>>
>>> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>>> fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
>>> fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
>>> ********** ehci_fsl_setup.272
>>> ********** ehci_fsl_setup.296
>>> ********** ehci_fsl_setup.299
>>> ********** ehci_fsl_reinit.257
>>> ********** mpc83xx_usb_setup.192
>>> ********** mpc83xx_usb_setup.207
>>> ********** mpc83xx_usb_setup.215
>>> ********** mpc83xx_usb_setup.220
>>> ********** mpc83xx_setup_phy.163
>>> ********** mpc83xx_setup_phy.180
>>> ********** mpc83xx_setup_phy.182
>>> ********** mpc83xx_usb_setup.238
>>> ********** mpc83xx_usb_setup.245
>>> ********** mpc83xx_usb_setup.249
>>> ********** mpc83xx_usb_setup.251
>>> ********** ehci_fsl_reinit.259
>>> ********** ehci_hub_control.559 - req: 8961
>>> ********** ehci_hub_control.574
>>> ********** ehci_hub_control.559 - req: 8961
>>> ********** ehci_hub_control.574
>>> ********** ehci_fsl_reinit.261
>>> ********** ehci_fsl_setup.301
>>> fsl-ehci fsl-ehci.0: irq 39, io base 0xff022000
>>> fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00
>>> usb usb1: configuration #1 chosen from 1 choice
>>> hub 1-0:1.0: USB hub found
>>> ********** ehci_hub_control.559 - req: 40966
>>> ********** ehci_hub_control.637
>>> hub 1-0:1.0: 2 ports detected
>>> ********** ehci_hub_control.559 - req: 40960
>>> ********** ehci_hub_control.642
>>> ********** ehci_hub_control.559 - req: 8963
>>> ********** ehci_hub_control.805
>>> ********** ehci_hub_control.559 - req: 8963
>>> ********** ehci_hub_control.805
>>> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
>>> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>>> usb usb1: Product: Freescale On-Chip EHCI Host Controller
>>> usb usb1: Manufacturer: Linux 2.6.28 ehci_hcd
>>> usb usb1: SerialNumber: fsl-ehci.0
>>> fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller
>>> fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2
>>> ********** ehci_fsl_setup.272
>>> ********** ehci_fsl_setup.296
>>> ********** ehci_fsl_setup.299
>>> ********** ehci_fsl_reinit.257
>>> ********** mpc83xx_usb_setup.192
>>> ********** mpc83xx_usb_setup.207
>>> ********** mpc83xx_usb_setup.215
>>> ********** mpc83xx_setup_phy.163
>>> ********** mpc83xx_setup_phy.180
>>> MACHINE CHECK - so dead it can't even print the message!
>>>
>>> At this point, it should carry on like this:
>>>
>>> ********** ehci_hub_control.559 - req: 8963
>>> ********** ehci_hub_control.805
>>> ********** ehci_hub_control.559 - req: 41728
>>> ********** ehci_hub_control.648
>>> ********** ehci_hub_control.559 - req: 8961
>>> ********** ehci_hub_control.574
>>> usb 1-1: configuration #1 chosen from 1 choice
>>> hub 1-1:1.0: USB hub found
>>> hub 1-1:1.0: 4 ports detected
>>> usb 1-1: New USB device found, idVendor=05e3, idProduct=0608
>>> usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
>>> usb 1-1: Product: USB2.0 Hub
>>> ********** ehci_hub_control.559 - req: 41728
>>> ********** ehci_hub_control.648
>>>
>>> You can see that it successfully found the connected external HUB.
>>>
>>> Any ideas why this happens? This [basic] code used to work (2.6.20)
>>> on both platforms. I know that's a long time ago, but MACHINE CHECK??
>>>
>>> (*) To get this platform to run 2.6.20, I had to patch the CPU tables
>>> to recognize it as 8347 (kernels of that vintage relied on the SVR to
>>> make choices, not PVR)
>>>
>>
>

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2010-01-28 13:20 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-01-27 20:20 USB host on 83xx Gary Thomas
2010-01-28  0:05 ` Gary Thomas
2010-01-28 12:17   ` Gary Thomas
2010-01-28 13:20     ` Gary Thomas

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