imx8mq+yocto+4.9.51_ga:USB3.0 issue

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imx8mq+yocto+4.9.51_ga:USB3.0 issue

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传策薛
Contributor V

Hi,community:

   

Our company has customized a motherboard for imx8mq, running yocto system, there are two usb3.0 interfaces on the motherboard, which are connected by two usb3.0hosts on the cpu, respectively connected to two usb3.0 interface cameras. At the same time, two cameras are taken to take the image stream, and the operation is normal at the beginning. After a period of time, the following error is printed:
[ 1163.760957] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.763187] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.765412] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.767643] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.769866] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.772090] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.774313] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.776538] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.778765] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.780990] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.783216] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.785440] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.787663] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1163.789894] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.792118] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.794342] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.796564] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.798786] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.801017] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1163.803243] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1163.805466] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1163.807692] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1163.809914] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.812142] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[ 1163.814363] xhci-hcd xhci-hcd.0.auto: Ring expansion failed
[1164.500502] systemd-journald[1737]: /dev/kmsg buffer overrun, some messages lost.
[ 1164.514332] xhci-hcd xhci-hcd.0.auto: Ring expansion failed

What is the problem with this?

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi 传策 薛

RE: XHCI: Ring expansion failure — Linux USB 

please try latest Linux L4.14.78

linux-imx - i.MX Linux kernel 
Linux L4.14.78_1.0.0 Documentation
i.MX Software | NXP 

Best regards
igor
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278 Views
传策薛
Contributor V

Is Linux L4.14.78 a GA version?

pastedImage_1.png

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278 Views
igorpadykov
NXP TechSupport
NXP TechSupport

yes it is GA, one can check:

i.MX Software | NXP 

Best regards
igor

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