* USB Host at full speed
@ 2007-05-29 9:11 axelnico
2007-05-29 11:01 ` Li Yang-r58472
0 siblings, 1 reply; 3+ messages in thread
From: axelnico @ 2007-05-29 9:11 UTC (permalink / raw)
To: Linuxppc-embedded
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Hello ALL,
I m currently trying to force the USB host controller from MPC8349 to only work at full speed i.e. whatever is the connected device, the bandwidth should be 12MB.
I thought i could perform it just by setting some registers to right value but it aren't working.
I fear i have to force software to always use TT and split transfer but i dont know exactly where to start..
If anybody could help, would be so great!!
Thank you,
Pierre-Axel.
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^ permalink raw reply [flat|nested] 3+ messages in thread* RE: USB Host at full speed
2007-05-29 9:11 USB Host at full speed axelnico
@ 2007-05-29 11:01 ` Li Yang-r58472
2007-05-29 11:07 ` [linux-usb-devel] " Oliver Neukum
0 siblings, 1 reply; 3+ messages in thread
From: Li Yang-r58472 @ 2007-05-29 11:01 UTC (permalink / raw)
To: axelnico, Linuxppc-embedded; +Cc: linux-usb-devel
> -----Original Message-----
> From: linuxppc-embedded-bounces+leoli=3Dfreescale.com@ozlabs.org
> [mailto:linuxppc-embedded-bounces+leoli=3Dfreescale.com@ozlabs.org] On
Behalf Of
> axelnico@yahoo.fr
> Sent: Tuesday, May 29, 2007 5:11 PM
> To: Linuxppc-embedded@ozlabs.org
> Subject: USB Host at full speed
>=20
> Hello ALL,
>=20
> I m currently trying to force the USB host controller from MPC8349 to
only work
> at full speed i.e. whatever is the connected device, the bandwidth
should be 12MB.
> I thought i could perform it just by setting some registers to right
value but it
> aren't working.
> I fear i have to force software to always use TT and split transfer
but i dont
> know exactly where to start..
>=20
> If anybody could help, would be so great!!
Your question can be interpreted as how to force EHCI host driver to
work in full speed. Usb-devel list cc'ed should be a better place for
such a question.
- Leo
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-usb-devel] USB Host at full speed
2007-05-29 11:01 ` Li Yang-r58472
@ 2007-05-29 11:07 ` Oliver Neukum
0 siblings, 0 replies; 3+ messages in thread
From: Oliver Neukum @ 2007-05-29 11:07 UTC (permalink / raw)
To: linux-usb-devel; +Cc: axelnico, Linuxppc-embedded
Am Dienstag, 29. Mai 2007 13:01 schrieb Li Yang-r58472:
> Your question can be interpreted as how to force EHCI host driver to
> work in full speed. =A0Usb-devel list cc'ed should be a better place for
> such a question.
It can't, which is the reason you pair EHCI with OHCI/UHCI.
Regards
Oliver
^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-05-29 9:11 USB Host at full speed axelnico
2007-05-29 11:01 ` Li Yang-r58472
2007-05-29 11:07 ` [linux-usb-devel] " Oliver Neukum
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