[Letux-kernel] error messages on pyra with usb otg port

Andreas Kemnade andreas at kemnade.info
Wed Dec 12 12:32:39 CET 2018


Hi,

On Wed, 12 Dec 2018 09:05:00 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> > Am 11.12.2018 um 21:58 schrieb Andreas Kemnade <andreas at kemnade.info>:
> > 
> > Hi,
> > 
> > I got these messages while playing around with the pyra otg port:
> > 
> > root at letux:~# rmmod dwc3_omap
> > [  130.870422] dwc3 4a030000.dwc3: otg: device->idle
> > [  130.883397] omap-dwc3 4a020000.omap_dwc3: Dropping the link to regulator.37
> > root at letux:~# modprobe dwc3_omap
> > [  135.180613] omap-dwc3 4a020000.omap_dwc3: Linked as a consumer to regulator.37
> > [  135.190475] dwc3 4a030000.dwc3: Failed to get clk 'ref': -2
> > [  135.199202] OF: graph: no port node found in /ocp/ocp2scp at 4a080000/usb2phy at 4a084000

Hmm, that message does not appear in your logs. So now the question is why.
At least something to investigate. The clk error is also in your logs,
so it is harmless.

Since USB gadget works in uboot, we probably can rule out hw problems.

> > [  135.208664] dwc3 4a030000.dwc3: otg: idle->device
> > [  135.214376] dwc3 4a030000.dwc3: changing max_speed on rev 5533202a
> > root at letux:~# [  135.238419] using random self ethernet address
> > 
> > 
> > Are these errors harmless?
> > dtb file is  
> > => echo ${fdtfile}  
> > omap5-letux-cortex15-v5.1+pyra-v5.1.dtb  
> 
And you have tested with what?

Regards,
Andreas
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