linux-kernel - Re: [PATCH 20/20] arch: dts: Fix DWC USB3 DT nodes name

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Message-ID: <878sc8lx0e.fsf@kernel.org>
Date:   Wed, 14 Oct 2020 17:09:37 +0300
From:   Felipe Balbi <balbi@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Patrice Chotard <patrice.chotard@...com>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>, Wei Xu <xuwei5@...ilicon.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Manu Gautam <mgautam@...eaurora.org>,
        Roger Quadros <rogerq@...com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-snps-arc@...ts.infradead.org, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 20/20] arch: dts: Fix DWC USB3 DT nodes name


Hi Serge,

Serge Semin <Sergey.Semin@...kalelectronics.ru> writes:
> In accordance with the DWC USB3 bindings the corresponding node name is
> suppose to comply with Generic USB HCD DT schema, which requires the USB

DWC3 is not a simple HDC, though.

> nodes to have the name acceptable by the regexp: "^usb(@.*)?" . But a lot
> of the DWC USB3-compatible nodes defined in the ARM/ARM64 DTS files have
> name as "^dwc3@.*" or "^usb[1-3]@.*" or even "^dwusb@.*", which will cause
> the dtbs_check procedure failure. Let's fix the nodes naming to be
> compatible with the DWC USB3 DT schema to make dtbs_check happy.
>
> Note we don't change the DWC USB3-compatible nodes names of
> arch/arm64/boot/dts/apm/{apm-storm.dtsi,apm-shadowcat.dtsi} since the
> in-source comment says that the nodes name need to be preserved as
> "^dwusb@.*" for some backward compatibility.

interesting, compatibility with what? Some debugfs files, perhaps? :-)

In any case, I don't have any problems with this, so I'll let other
folks comment.

-- 
balbi

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