Hi all,
We are developing an embedded product which can connect ipod and play
its contents.
But for some particular reason we need to force the ipod to connect at
full-speed.
Chipidea usb ip did not provide an companion HC, but it provide
embedded TT to handle
full-speed. And we found that there
answer in the spec yet.
On Wed, Jul 3, 2013 at 2:18 AM, Greg KH wrote:
> On Tue, Jul 02, 2013 at 01:58:29PM +0800, Rong Wang wrote:
>> Hi all,
>>
>> We are developing an embedded product which can connect ipod and play
>> its contents.
>> But for some particular rea
t software.
Thanks again for your help.
Regards
Wang Rong
On Thu, Jul 4, 2013 at 11:05 PM, Alan Stern wrote:
> On Thu, 4 Jul 2013, Rong Wang wrote:
>
>> Hi Greg,
>>
>> Thanks for your suggestion. We are trying to move to kernel-3.10.
>>
>> But I still have a qu
usb: udc: add gadget state kobject uevent
Add USB_UDC_STATE environment variable in udc uevent
callback and trigger kobject_uevent in usb_gadget_set_state
to inform the user-space the state of the gadget.
Signed-off-by: Rong Wang
diff --git a/drivers/usb/gadget/udc-core.c b
usb: udc: add gadget state kobject uevent
Add USB_UDC_STATE environment variable in udc uevent
callback and trigger kobject_uevent in usb_gadget_set_state
to inform the user-space the state of the gadget.
Signed-off-by: Rong Wang
diff --git a/drivers/usb/gadget/udc-core.c b
52 AM, Greg KH wrote:
> On Mon, Jul 15, 2013 at 11:57:24AM +0800, Rong Wang wrote:
>> usb: udc: add gadget state kobject uevent
>>
>> Add USB_UDC_STATE environment variable in udc uevent
>> callback and trigger kobject_uevent in usb_gadget_set_state
>>
Hi Greg,
On Tue, Jul 16, 2013 at 2:31 PM, Greg KH wrote:
> On Tue, Jul 16, 2013 at 11:49:07AM +0800, Rong Wang wrote:
>> Hi Greg,
>>
>> The USB on our platform can change roles between HOST and GADGET, but
>> it is not capable of OTG.
>
> That kind of sounds l
gt; no ?
I do not know if udev can polling sysfs file content change. I'll study this.
But the change is triggered by calling usb_gadget_set_state, and I find
composite framework do not call this. Then we should do this common work
in every udc driver?
>
> --
> balbi
====
Hi Peter,
On Wed, Jul 17, 2013 at 10:36 AM, Peter Chen wrote:
> On Mon, Jul 15, 2013 at 11:31:17PM -0700, Greg KH wrote:
>> On Tue, Jul 16, 2013 at 11:49:07AM +0800, Rong Wang wrote:
>> > Hi Greg,
>> >
>> > The USB on our platform can change roles between
On Wed, Jul 17, 2013 at 9:27 PM, Felipe Balbi wrote:
> On Wed, Jul 17, 2013 at 09:04:54PM +0800, Rong Wang wrote:
>> Hi Felipe,
>>
>> On Wed, Jul 17, 2013 at 3:57 PM, Felipe Balbi wrote:
>> > Hi,
>> >
>> > On Mon, Jul 15, 2013 at 11:31:17PM -0700,
2013 at 04:33:43PM +0800, Rong Wang wrote:
>> On Wed, Jul 17, 2013 at 9:27 PM, Felipe Balbi wrote:
>> > On Wed, Jul 17, 2013 at 09:04:54PM +0800, Rong Wang wrote:
>> >> Hi Felipe,
>> >>
>> >> On Wed, Jul 17, 2013 at 3:57 PM, Felipe Balbi wrote:
&
ibute file under sysfs is
registered as "state", while usb_gadget_set_state
take it as "status" when it's going to update.
Here it is made consistent as "state".
Signed-off-by: Rong Wang
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.
Hi all,
I'm on USB certification of a vendor SoC, and there's a case called
"Bus powered hub power exceeded test" in the compliance plan defined
by the usb.org. It requires an error message when a device (Max power
descriptor >100mA) is attached to an external bus powered hub.
But when I attached
an Stern wrote:
> On Tue, 31 Mar 2015, Rong Wang wrote:
>
>> Hi all,
>>
>> I'm on USB certification of a vendor SoC, and there's a case called
>> "Bus powered hub power exceeded test" in the compliance plan defined
>> by the usb.org. It requ
On Thu, Apr 2, 2015 at 9:10 AM, Peter Chen wrote:
> On Wed, Apr 01, 2015 at 10:57:54AM +0800, Rong Wang wrote:
>> Hi Alan,
>>
>> Thanks for the confirmative answer, since I suspect it's the bug
>> of the hub first, but all the three hubs at my hand report the sam
On Thu, Apr 2, 2015 at 11:48 AM, Peter Chen wrote:
>
>> Yes
>>
>> >> reported as self powered, per port power limit is 500 mA, so the
>> >> device may be configured and maybe work normal.
>> >>
>> >
>> > I see your hub report its max power is 100 mA, so if it can report as
>> > self powered, then
Hi,
We have one USB 2.0 Controller on an ARM SoC, with internal PHY
confirming to UTMI.
The PHY would detect unexpected disconnect (amplitude of the
differential envelop still < 625 mV)
and assert the HostDisconnect signal to the Controller to indicate a
disconnection event.
When the HostDisconnec
On Fri, May 22, 2015 at 10:06 PM, Alan Stern wrote:
> On Fri, 22 May 2015, Rong Wang wrote:
>
>> Hi,
>>
>> We have one USB 2.0 Controller on an ARM SoC, with internal PHY
>> confirming to UTMI.
>> The PHY would detect unexpected disconnect (amplitude of the
&g
Hi Alan,
On Mon, May 25, 2015 at 10:16 PM, Alan Stern wrote:
> On Mon, 25 May 2015, Rong Wang wrote:
>
>> On Fri, May 22, 2015 at 10:06 PM, Alan Stern
>> wrote:
>> > On Fri, 22 May 2015, Rong Wang wrote:
>> >
>> >> Hi,
>> >>
>>
Hi Alan,
On Tue, May 26, 2015 at 11:32 PM, Alan Stern wrote:
> On Tue, 26 May 2015, Rong Wang wrote:
>
>> > It seems that your customer wants to change the hardware, not the
>> > software.
>>
>> Yes. We plan to do a hardware modification. But we want to make
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