linux-kernel - Re: [PATCH v2 2/2] ARM: dts: bcm2711-rpi-4-b: Fix usb's unit address

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Message-ID: <CAL_JsqL-CdrAqY_4vnXQfTuSU8GsYzZutyFhZZgm4o3p-qaqFA@mail.gmail.com>
Date:   Tue, 31 Aug 2021 08:50:14 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Nicolas Saenz Julienne <nsaenzju@...hat.com>
Cc:     Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devicetree@...r.kernel.org,
        "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@...adcom.com>,
        "moderated list:BROADCOM BCM2835 ARM ARCHITECTURE" 
        <linux-rpi-kernel@...ts.infradead.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: Re: [PATCH v2 2/2] ARM: dts: bcm2711-rpi-4-b: Fix usb's unit address

On Tue, Aug 31, 2021 at 7:59 AM Nicolas Saenz Julienne
<nsaenzju@...hat.com> wrote:
>
> The unit address is supposed to represent '<device>,<function>'. Which
> are both 0 for RPi4b's XHCI controller. On top of that although
> OpenFirmware states bus number goes in the high part of the last reg
> parameter, FDT doesn't seem to care for it[1], so remove it.
>
> [1] https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210830103909.323356-1-nsaenzju@redhat.com/#24414633
> Fixes: 258f92d2f840 ("ARM: dts: bcm2711: Add reset controller to xHCI node")
> Suggested-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzju@...hat.com>
> ---
>
> Chages since v1:
>  - Add patch as per robh suggestion
>
>  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

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