[meta-xilinx] USB PHY problem on ZC702

[Alan Hughes]

Thanks for the prompt response Nathan.

I've managed to solve this problem by using a newer FSBL (actually the one from the 2014.4 SDK release - we had previously used an older one which appears had a glitch in it).

Regarding Yocto "Dizzy", I want to move us to that release next year, however not until we have successfully passed a design review milestone with our customer in mid-January (for obvious reasons, now I have it working I do not want to break it again).

Alan

-----Original Message-----
From: Nathan Rossi [mailto:nathan.rossi at xilinx.com] 
Sent: 09 December 2014 06:13
To: Alan Hughes
Cc: meta-xilinx at yoctoproject.org
Subject: RE: [meta-xilinx] USB PHY problem on ZC702

> -----Original Message-----
> From: meta-xilinx-bounces at yoctoproject.org [mailto:meta-xilinx- 
> bounces at yoctoproject.org] On Behalf Of Alan Hughes
> Sent: Monday, December 08, 2014 11:22 PM
> To: meta-xilinx at yoctoproject.org
> Subject: [meta-xilinx] USB PHY problem on ZC702
> 
> I'm having a problem getting the USB port to operate on a Xilinx ZC702 
> development board using Yocto Daisy 1.6.2.  This is probably a similar 
> problem to what was discussed previously this month for the ZedBoard, 
> but I cannot work out how to get the fix discussed in that thread 
> applied to this platform.

It probably is a similar issue, it always seems to popup every now and again.
 
> 
> 
> 
> On boot the USB fails to initialise with the following kernel messages:
> 
> 
> 
> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> 
> zynq-dr e0002000.usb: Unable to init USB phy, missing?
> 
> usbcore: registered new interface driver usb-storage
> 
> 
> 
> We originally tried using the 3.15 kernel provided by ADI since we 
> have a
> FMCOMMS4 board attached to the ZC702; after having problems with that 
> went back to the linux-xlinx kernel defined in meta-xilinx, but also 
> with no joy.

Try meta-xilinx dizzy branch with poky/oe dizzy, the resolution for the zedboard/zc702/etc issue was only done in the dizzy/master branch against the linux-xlnx 3.14 kernel. If that works for you and you are happy to use dizzy, otherwise let me know and we can look at back-porting that change to daisy.

Regards,
Nathan


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