Re: [PATCH v3 0/2] usb: xhci: Load Raspberry Pi 4 VL805's firmware

[Nicolas Saenz Julienne]

On Tue, 2020-05-05 at 18:26 +0200, Nicolas Saenz Julienne wrote:
> Newer revisions of the RPi4 need their xHCI chip, VL805, firmware to be
> loaded explicitly. Earlier versions didn't need that as they where using
> an EEPROM for that purpose. This series takes care of setting up the
> relevant infrastructure and run the firmware loading routine at the
> right moment.
> 
> Note that this builds on top of Sylwester Nawrocki's "USB host support
> for Raspberry Pi 4 board" series.
> 
> ---

Please don't forget about this series. The new 8GB RPi4 contains this HW design
change and USB will not work without it. See this discussion on the downstream
kernel github, where other OS/bootloaders are hitting the issue:

https://github.com/raspberrypi/firmware/issues/1402

Otherwise, the Linux version of this is already in linux-next:

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/usb/host/pci-quirks.c?h=next-20200529&id=c65822fef4adc0ba40c37a47337376ce75f7a7bc

Regards,
Nicolas

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