[meta-xilinx] zedboard usb issues

[Simon Vincent]

That makes a lot of sense.
I will give shorting R145 a go.
Thanks

Simon

On 27/11/14 04:55, Nathan Rossi wrote:
> Hi Simon,
>
> Unfortunately the Zedboard does not connect the PHY reset pin to an MIO (unless you short R145, see the schematics for more details). You will need a bitstream that has the OTG-RESETN signal (pin G17) hooked upto a EMIO or a GPIO controller in PL. Sorry for confusion there, I did not even realize this myself until double checking.
>
> Also, you can build u-boot-spl with meta-xilinx (not fsbl as of yet).
>
> Regards,
> Nathan
>
>> -----Original Message-----
>> From: Simon Vincent [mailto:simon.vincent at xsilon.com]
>> Sent: Thursday, November 27, 2014 12:40 AM
>> To: Nathan Rossi; Mike Looijmans; Philip Balister
>> Cc: meta-xilinx at yoctoproject.org
>> Subject: Re: [meta-xilinx] zedboard usb issues
>>
>> Correction. I am still having problems with this.
>>
>> If I build against nrossi/next branch and include a system.bit it works
>> but if I don't include a system.bit it does not work and fails with the
>> following error.
>> zynq-dr e0002000.ps7-usb: Unable to init USB phy, missing?
>>
>> Any idea why this is happening?
>>
>> Is it possible to get yocto to build the fsbl?
>>
>> Thanks
>>
>> Simon
>>
>> On 06/11/14 12:12, Simon Vincent wrote:
>>> I did a build using the nrossi/next branch and I can confirm the USB
>>> now works.
>>> Many thanks
>>>
>>> Simon
>>>
>>> On 04/11/14 09:45, Nathan Rossi wrote:
>>>>> -----Original Message-----
>>>>> From: meta-xilinx-bounces at yoctoproject.org [mailto:meta-xilinx-
>>>>> bounces at yoctoproject.org] On Behalf Of Mike Looijmans
>>>>> Sent: Monday, November 03, 2014 4:48 PM
>>>>> To: meta-xilinx at yoctoproject.org
>>>>> Subject: Re: [meta-xilinx] zedboard usb issues
>>>>>
>>>>> On 10/31/2014 10:35 AM, Nathan Rossi wrote:
>>>>> Met vriendelijke groet / kind regards,
>>>>>
>>>>> Mike Looijmans
>>>>> System Expert
>>>>>
>>>>>
>>>>> TOPIC Embedded Systems
>>>>> Eindhovenseweg 32-C, NL-5683 KH Best
>>>>> Postbus 440, NL-5680 AK Best
>>>>> Telefoon: (+31) (0) 499 33 69 79
>>>>> Telefax:  (+31) (0) 499 33 69 70
>>>>> E-mail: mike.looijmans at topic.nl
>>>>> Website: www.topic.nl
>>>>>
>>>>> Please consider the environment before printing this e-mail
>>>>>
>>>>> Topic zoekt gedreven (embedded) software specialisten!
>>>>> http://topic.nl/vacatures/topic-zoekt-software-engineers/
>>>>>
>>>>> -----Original Message-----
>>>>>>> From: meta-xilinx-bounces at yoctoproject.org [mailto:meta-xilinx-
>>>>>>> bounces at yoctoproject.org] On Behalf Of Simon Vincent
>>>>>>> Sent: Friday, October 31, 2014 12:48 AM
>>>>>>> To: meta-xilinx at yoctoproject.org
>>>>>>> Subject: [meta-xilinx] zedboard usb issues
>>>>>>>
>>>>>>> I have build a zedboard image using the latest xilinx-yocto but I am
>>>>>>> having problems with the usb.
>>>>>>>
>>>>>>> I find that 50% of the time I get an error initialising the usb phy:
>>>>>>> root at zedboard-zynq7:~# dmesg|grep -i usb
>>>>>>> [    0.562406] usbcore: registered new interface driver usbfs
>>>>>>> [    0.568243] usbcore: registered new interface driver hub
>>>>>>> [    0.573986] usbcore: registered new device driver usb
>>>>>>> [    1.314762] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
>>>>> Driver
>>>>>>> [    1.329453] zynq-dr e0002000.ps7-usb: Unable to init USB phy,
>>>>> missing?
>>>>>>> [    1.336866] usbcore: registered new interface driver usb-storage
>>>>>>> [    1.461775] usbcore: registered new interface driver usbhid
>>>>>>> [    1.469402] usbhid: USB HID core driver
>>>>>>>
>>>>>>> The rest of the time I get the following but no usb devices are
>>>>>>> recognised:
>>>>>>>
>>>>>>> root at zedboard-zynq7:~# dmesg|grep -i usb
>>>>>>> [    0.562418] usbcore: registered new interface driver usbfs
>>>>>>> [    0.568255] usbcore: registered new interface driver hub
>>>>>>> [    0.573981] usbcore: registered new device driver usb
>>>>>>> [    1.314193] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
>>>>> Driver
>>>>>>> [    1.331922] Found TI TUSB1210 ULPI transceiver.
>>>>>>> [    1.341299] zynq-ehci zynq-ehci.0: Xilinx Zynq USB EHCI Host
>>>>> Controller
>>>>>>> [    1.348773] zynq-ehci zynq-ehci.0: new USB bus registered,
>>>>>>> assigned
>>>>>>> bus number 1
>>>>>>> [    1.405684] zynq-ehci zynq-ehci.0: USB 2.0 started, EHCI 1.00
>>>>>>> [    1.418015] hub 1-0:1.0: USB hub found
>>>>>>> [    1.429784] usbcore: registered new interface driver usb-storage
>>>>>>> [    1.560122] usbcore: registered new interface driver usbhid
>>>>>>> [    1.567687] usbhid: USB HID core driver
>>>>>>>
>>>>>>> If I boot using the sdcard image that came with the zedboard the USB
>>>>>>> works every time and recognises usb devices.
>>>>>>>
>>>>>>> Has anyone else had problems with this?
>>>>>> I have seen this before with other boards. It is caused when the
>>>>>> USB PHY
>>>>> is not reset properly. I don't see the issue in my testing most
>>>>> likely due
>>>>> to FSBL and or U-Boot resetting the phy.
>>>>>
>>>>> I have been using a patch for that for a while (the PHY reset in
>>>>> FSBL only
>>>>> worked for half the MIO pins). I was waiting for the VBUS patch to
>>>>> make it
>>>>> to
>>>>> Xilinx master-next before submitting that to Xilinx. There's also
>>>>> one in
>>>>> the
>>>>> ADI tree, but it uses much too loose timings for the reset pulse.
>>>>>
>>>>> You can see my code here, this solved the PHY reset on all boards:
>>>>> https://github.com/topic-embedded-
>>>>> products/linux/commit/7fb825c883e744c069a049ca4629c4664d2081af
>>>> This is what I was referring to regarding the kernel being able to
>>>> reset the PHY. But as it turns out the linux-xlnx kernel only had
>>>> this in the xlnx_3.8 tree
>>>> (https://github.com/Xilinx/linux-
>> xlnx/commit/53e868300ad63c52137f47fd762a660071f1fd4e),
>>>> and the patch was never merged with the newer branches.
>>>>
>>>> That patch looks good Mike, I have ported that change as a patch for
>>>> the linux-xlnx_3.14 recipe. I have that on the nrossi/next branch,
>>>> which I intend to merge by the end of the week.
>>>>
>>>> @Simon: I have also resolved that toolchain error you were getting
>>>> with the newer meta-xilinx with dizzy.
>>>>
>>>> Regards,
>>>> Nathan
>>>>
>>>>>
>>>>>> Linux is able to reset the PHY, and I have a patch on my nrossi/next
>>>>> branch which should fix this issue you are seeing. Would you be able
>> to
>>>>> give it a try and let me know the outcome?, the branch is at:
>>>>>> https://github.com/nathanrossi/meta-xilinx/compare/nrossi/next
>>>>> --
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