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Date:   Mon, 01 Jun 2020 13:09:37 +0200
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Marek Vasut <marex@...x.de>, mbrugger@...e.com,
        u-boot@...ts.denx.de, bmeng.cn@...il.com,
        linux-kernel@...r.kernel.org
Cc:     sjg@...omium.org, m.szyprowski@...sung.com, s.nawrocki@...sung.com,
        mark.kettenis@...all.nl
Subject: Re: [PATCH v3 0/2] usb: xhci: Load Raspberry Pi 4 VL805's firmware

On Mon, 2020-06-01 at 12:53 +0200, Marek Vasut wrote:
> On 6/1/20 12:47 PM, Nicolas Saenz Julienne wrote:
> > 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
> 
> We're already at 2020.07-rc3 , so unless this is a bugfix (does not look
> that way), this will have to wait for next release cycle.

Of course. As long as it eventually gets in I'm happy (not implying this
specific series is flawless, but the overall mechanism). I'm just worried this
gets lost.

> Also, it seems
> there was a lengthy ongoing discussion, is that already sorted out ?

Well, there was some discussion on how to incorporate the platform specific
callback into XCHI's code. Which this revision of the series addresses. But,
IIRC, that's pretty much it as far as discussion is concerned.

Regards,
Nicolas


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