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

[Krzysztof Kozlowski <krzk@kernel.org>]

On Wed, 14 Oct 2020 at 12:23, Serge Semin
<Sergey.Semin@baikalelectronics.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@baikalelectronics.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(-)
>