linux-kernel - Re: [PATCH 0/5] DT schema changes for HiKey970 PCIe hardware to work

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Date:   Thu, 29 Jul 2021 11:20:37 -0600
From:   Rob Herring <robh@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Linuxarm <linuxarm@...wei.com>, mauro.chehab@...wei.com,
        Binghui Wang <wangbinghui@...ilicon.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Xiaowei Song <songxiaowei@...ilicon.com>,
        devicetree@...r.kernel.org,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        PCI <linux-pci@...r.kernel.org>, linux-phy@...ts.infradead.org
Subject: Re: [PATCH 0/5] DT schema changes for HiKey970 PCIe hardware to work

On Thu, Jul 29, 2021 at 5:56 AM Mauro Carvalho Chehab
<mchehab+huawei@...nel.org> wrote:
>
> Hi Rob,
>
> After our discussions, I'm opting to submit first the DT bindings for the
> Kirin 970 PCIe support.
>
> Patch 1 is there just because patch 2 needs. You already acked on it.
>
> Patch 5 is also there just as an example of the entire stuff added to
> the DTS file.
>
> The core of this series are patches 2 to 4. They contain the conversion
> of the kirin-pcie.txt file to the DT schema, and adds the needed
> bindings.
>
> Currently, it generates some warnings:
>
>    Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.example.dt.yaml: pcie@...00000: pcie@4,0:compatible: None of ['pciclass,0604'] are valid under the given schema
>         From schema: Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml

This should be fixed now in dtschema master.

>   Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.example.dt.yaml: pcie@4,0: reset-gpios: [[4294967295, 1, 0]] is too short

Your proposed change to pci-bus.yaml is wrong. It's requiring 4
entries. You need 'minItems: 1'.

Rob