Regression: USB OTG port breaks after a few hours in host mode on iMX6
Russell King - ARM Linux
linux at arm.linux.org.uk
Thu Oct 8 09:16:06 PDT 2015
On Thu, Oct 08, 2015 at 09:52:52AM +0000, Peter Chen wrote:
> I can't reproduce it for 5 hours, and will change pinmux (do the same
> thing with your platform), and do the overnight test.
There's definitely something weird going on. Over night last night,
I left the Logitech universal receiver in the port, and this morning
it was indicating in /proc/interrupts:
283: 50 0 0 0 GPC 43 Edge 2184000.usb
I removed it, and now I have:
283: 50 0 1716 0 GPC 43 Edge 2184000.usb
which is increasing at a rate of 90 per minute.
Nothing in the kernel message log indicating why this may be. It looks
like runtime PM doesn't work on this port:
whereas the other port (which has zero interrupts) it does:
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
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