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imx6 HSIC usb2 probe hang

Question asked by Andrea Collamati on Jul 13, 2015

Hi All,

we are porting the imx_3.14.28_1.0.0_ga kernel on a  custom board based on a imx6dl processor.

On our board we connected the USB2 HSIC port to a microchip USB3503 HSIC HUB.

We attached our device tree.


The kernel hangs during the probe of usbhc2 inside the ci_hdrc_imx_probe.

Using kgdb we found  that the exact point is the call of device_add:


ci_hdrc_imx_probe -> ci_hdrc_imx_probe -> ci_hdrc_add_device   -> platform_device_add -> device_add



Do you have any suggestions?

Best Regards


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