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Re: Arm drivers: are device tree descriptions required for every device?

	hello.  As a very simple starting point, I'd watch the output of vmstat -i to see if your
USB chips are generating interupts when you add or remove devices from the USB bus.  The
behavior you describe, combined with the dmesg output, makes me think interrupt routing for the
USB chips isnt working, so the interupts generated when you add and remove devices from the USB
bus aren't getting delivered.  Or, it's possible the interrupts aren't getting enabled by the
USB chip driver (motg?)

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