linux-kernel - Re: [PATCH v8 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk

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Message-ID: <20200507215256.GA8228@bogus>
Date:   Thu, 7 May 2020 16:52:56 -0500
From:   Rob Herring <robh@...nel.org>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Cc:     f.fainelli@...il.com, gregkh@...uxfoundation.org, wahrenst@....net,
        helgaas@...nel.org, linux-kernel@...r.kernel.org,
        Mathias Nyman <mathias.nyman@...el.com>,
        tim.gover@...pberrypi.org, linux-pci@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 4/4] USB: pci-quirks: Add Raspberry Pi 4 quirk

On Tue,  5 May 2020 18:13:17 +0200, 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
> VideoCore. Inform VideoCore that VL805 was just reset.
> 
> Also, as this creates a dependency between USB_PCI and VideoCore's
> firmware interface, and since USB_PCI can't be set as a module neither
> this can. Reflect that on the firmware interface Kconfg.
> 
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
> ---
> 
> Changes since v5:
>  - Fix Kconfig issue with allmodconfig
> 
> Changes since v4:
>  - Do not split up error message
> 
> Changes since v3:
>  - Add more complete error message
> 
> Changes since v1:
>  - Make RASPBERRYPI_FIRMWARE dependent on this quirk to make sure it
>    gets compiled when needed.
> 
>  drivers/firmware/Kconfig      |  3 ++-
>  drivers/usb/host/pci-quirks.c | 16 ++++++++++++++++
>  2 files changed, 18 insertions(+), 1 deletion(-)
> 

Reviewed-by: Rob Herring <robh@...nel.org>