linux-kernel - Re: [PATCH] usb: xhci-pci: Raspberry Pi FW loader for VIA VL805

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Message-ID: <185f8cae-9898-ee72-00f1-ec79d98c43f4@gmail.com>
Date:   Mon, 17 Feb 2020 12:52:38 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com
Cc:     oneukum@...e.com, phil@...pberrypi.com, tim.gover@...pberrypi.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] usb: xhci-pci: Raspberry Pi FW loader for VIA VL805



On 2/17/2020 2:07 AM, Nicolas Saenz Julienne wrote:
> On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be
> loaded directly from an EEPROM or, if not present, by the SoC's
> VideCore.  Inform VideCore that VL805 was just reset, or defer xhci's
> probe if not yet joinable trough the mailbox interface.
> 
> Based on Tim Gover's downstream implementation.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>

Would it work if you registered the firmware loading as pci fixup such
that you would not even have to mangle xhci-pci.c at all and all the
logic could be contained within drivers/firmware/raspberrypi.c?
-- 
Florian