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From: Rob Herring <robh+dt@kernel.org>
To: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Linuxarm <linuxarm@huawei.com>,
	mauro.chehab@huawei.com, Binghui Wang <wangbinghui@hisilicon.com>,
	Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Xiaowei Song <songxiaowei@hisilicon.com>,
	devicetree@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	PCI <linux-pci@vger.kernel.org>,
	linux-phy@lists.infradead.org
Subject: Re: [PATCH v3 0/4] DT schema changes for HiKey970 PCIe hardware to work
Date: Tue, 3 Aug 2021 16:11:42 -0600	[thread overview]
Message-ID: <CAL_JsqLjw=+szXWJjGe86tMc51NA-5j=jVSXUAWuKeZRuJNJUg@mail.gmail.com> (raw)
In-Reply-To: <cover.1627965261.git.mchehab+huawei@kernel.org>

On Mon, Aug 2, 2021 at 10:39 PM Mauro Carvalho Chehab
<mchehab+huawei@kernel.org> wrote:
>
> Hi Rob,
>
> That's the third version of the DT bindings for Kirin 970 PCIE and its
> corresponding PHY.
>
> It is identical to v2, except by:
>         -          pcie@7,0 { // Lane 7: Ethernet
>         +          pcie@7,0 { // Lane 6: Ethernet

Can you check whether you have DT node links in sysfs for the PCI
devices? If you don't, then something is wrong still in the topology
or the PCI core is failing to set the DT node pointer in struct
device. Though you don't rely on that currently, we want the topology
to match. It's possible this never worked on arm/arm64 as mainly
powerpc relied on this.

I'd like some way to validate the DT matches the PCI topology. We
could have a tool that generates the DT structure based on the PCI
topology.

> at Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml
>
> IMO, the best would be to merge this series via your tree, as it
> depends on the patch converting the DT bindings for the PCIe DWC
> driver.

Yes, agreed.

Rob

  parent reply	other threads:[~2021-08-03 22:11 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-03  4:38 Mauro Carvalho Chehab
2021-08-03  4:38 ` [PATCH v3 1/4] dt-bindings: PCI: kirin: Fix compatible string Mauro Carvalho Chehab
2021-08-03 22:22   ` Rob Herring
2021-08-03  4:38 ` [PATCH v3 2/4] dt-bindings: PCI: kirin: Convert kirin-pcie.txt to yaml Mauro Carvalho Chehab
2021-08-03 22:27   ` Rob Herring
2021-08-03  4:38 ` [PATCH v3 3/4] dt-bindings: PCI: kirin: Add support for Kirin970 Mauro Carvalho Chehab
2021-08-03  4:38 ` [PATCH v3 4/4] dt-bindings: phy: Add bindings for HiKey 970 PCIe PHY Mauro Carvalho Chehab
2021-08-03 22:29   ` Rob Herring
2021-08-03 22:11 ` Rob Herring [this message]
2021-08-04  6:50   ` [PATCH v3 0/4] DT schema changes for HiKey970 PCIe hardware to work Mauro Carvalho Chehab
2021-08-04 16:28     ` Rob Herring
2021-08-05  7:46       ` Mauro Carvalho Chehab
2021-08-05  7:58         ` Mauro Carvalho Chehab
2021-08-06 16:23           ` Rob Herring
2021-08-10  9:42             ` Mauro Carvalho Chehab
2021-08-10 13:44               ` Rob Herring
2021-08-10 14:20                 ` Mauro Carvalho Chehab
2021-08-10 17:13                   ` Rob Herring
2021-08-10 17:52                     ` Rob Herring
2021-08-11  7:11                       ` Mauro Carvalho Chehab
2021-08-11  6:46                     ` Mauro Carvalho Chehab
2021-08-12  3:13                       ` Rob Herring
2021-08-12  7:48                         ` Mauro Carvalho Chehab

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