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

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Message-ID: <CAJKOXPeErocR5-3xCDqBR3-k3w_2EQ_768d71n229cbzeo4TtQ@mail.gmail.com>
Date:   Wed, 14 Oct 2020 12:33:25 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>,
        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>,
        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>,
        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-kernel@...r.kernel.org>,
        "linux-samsung-soc@...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

On Wed, 14 Oct 2020 at 12:23, Serge Semin
<Sergey.Semin@...kalelectronics.ru> wrote:
>
> 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
> 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.
>
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
>
> ---
>
> Please, test the patch out to make sure it doesn't brake the dependent DTS
> files. I did only a manual grepping of the possible nodes dependencies.

1. It is you who should compare the decompiled DTS, not us. For example:
$ for i in dts-old/*/*dtb dts-old/*/*/*dtb; do echo $i; crosc64
scripts/dtc/dtx_diff ${i} dts-new/${i#dts-old/} ; done

$ for i in dts-old/*/*dtb dts-old/*/*/*dtb; do echo $i; crosc64
fdtdump ${i} > ${i}.fdt ; crosc64 fdtdump dts-new/${i#dts-old/} >
dts-new/${i#dts-old/}.fdt ; diff -ubB ${i}.fdt
dts-new/${i#dts-old/}.fdt ; done

2. Split it per arm architectures (and proper subject prefix - not
"arch") and subarchitectures so maintainers can pick it up.

3. The subject title could be more accurate - there is no fix here
because there was no errors in the first place. Requirement of DWC
node names comes recently, so it is more alignment with dtschema.
Otherwise automatic-pickup-stable-bot might want to pick up... and it
should not go to stable.

Best regards,
Krzysztof

>  arch/arm/boot/dts/armada-375.dtsi              | 2 +-
>  arch/arm/boot/dts/exynos5250.dtsi              | 2 +-
>  arch/arm/boot/dts/exynos54xx.dtsi              | 4 ++--
>  arch/arm/boot/dts/keystone-k2e.dtsi            | 4 ++--
>  arch/arm/boot/dts/keystone.dtsi                | 2 +-
>  arch/arm/boot/dts/ls1021a.dtsi                 | 2 +-
>  arch/arm/boot/dts/omap5-l4.dtsi                | 2 +-
>  arch/arm/boot/dts/stih407-family.dtsi          | 2 +-
>  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi   | 2 +-
>  arch/arm64/boot/dts/exynos/exynos5433.dtsi     | 4 ++--
>  arch/arm64/boot/dts/exynos/exynos7.dtsi        | 2 +-
>  arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi | 4 ++--
>  arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 6 +++---
>  arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 4 ++--
>  arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 4 ++--
>  arch/arm64/boot/dts/hisilicon/hi3660.dtsi      | 2 +-
>  arch/arm64/boot/dts/qcom/apq8096-db820c.dtsi   | 4 ++--
>  arch/arm64/boot/dts/qcom/ipq8074.dtsi          | 4 ++--
>  arch/arm64/boot/dts/qcom/msm8996.dtsi          | 4 ++--
>  arch/arm64/boot/dts/qcom/msm8998.dtsi          | 2 +-
>  arch/arm64/boot/dts/qcom/qcs404-evb.dtsi       | 2 +-
>  arch/arm64/boot/dts/qcom/qcs404.dtsi           | 4 ++--
>  arch/arm64/boot/dts/qcom/sc7180.dtsi           | 2 +-
>  arch/arm64/boot/dts/qcom/sdm845.dtsi           | 4 ++--
>  arch/arm64/boot/dts/qcom/sm8150.dtsi           | 2 +-
>  25 files changed, 38 insertions(+), 38 deletions(-)
>