Re: USB 3.0 xhci questions

[Ryo ONODERA <ryo_on%yk.rim.or.jp@localhost>]

From: Takahiro HAYASHI <t.hash425%gmail.com@localhost>, Date: Tue, 12 Aug 2014 
21:49:35 +0900

> On 08/12/14 20:37, Ryo ONODERA wrote:
>> From: Takahiro HAYASHI <t.hash425%gmail.com@localhost>, Date: Tue, 12 Aug 
>> 2014
>> 02:14:43 +0900
> [snip]
>>> I have some questions.
>>>
>>> 1) Do you have PCI_INTR_FIXUP in your kernel config?
>>
>> I had no PCI_INTR_FIXUP in kernel config.
>> I have added PCI_INTR_FIXUP to my kernel config, and no effects.
> 
> hmm..
> 
>>> 2) Is the port enabled -- has XHCI_PS_PED in PORTSC?
>>
>> All PORTSC is 0x2a0.
>> It means port is disabled?
> 
> Yes, disabled.
> 
> xHCI 1.1 section 5.4.8 PORTSC reg says 0x2a0 means
> XHCI_PS_CCS = 0: device is not connected
> XHCI_PS_PED = 0: port disabled
> XHCI_PS_PLS = 0x5: Link is in the RxDetect state
> XHCI_PS_PP = 1: not power-off state
> 
> RxDetect is the state after port warm reset.
> In this state controller is waiting for device.
> 
> 
> - xHCI specification 1.1
> http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/extensible-host-controler-interface-usb-xhci.pdf

Hi,

Thanks for your explanation.
I read xhci spec already.
But I cannot find missing something for Intel xhci device...

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Ryo ONODERA // ryo_on%yk.rim.or.jp@localhost
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