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From: cinap_lenrek@felloff.net
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X-Bullshit: asynchronous callback storage STM CSS controller 
Subject: Re: [9front] Pi 4 Compute Module + IO Board Issues
Reply-To: 9front@9front.org
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> I downloaded all the latest firmware files from the git repo and
> unfortunately no USB. Just to clarify, this board lacks USB 3.0 and
> only has two 2.0 ports. The PCIe port is instead broken out to a
> standard x1 slot.

ah! that explains it.

the pi4 kernel does not include the usbdwc controller driver.
it is pretty easy to add tho in the kernel config file,
it is already used in the pi3 kernel which is also arm64.

--
cinap