linux-kernel - Re: [PATCH] dt-bindings: PCI: apple: Add missing 'power-domains' property

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Date:   Thu, 26 May 2022 15:48:15 +0200
From:   "Sven Peter" <sven@...npeter.dev>
To:     "Rob Herring" <robh@...nel.org>,
        "Hector Martin" <marcan@...can.st>,
        "Alyssa Rosenzweig" <alyssa@...enzweig.io>,
        "Bjorn Helgaas" <bhelgaas@...gle.com>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Mark Kettenis" <kettenis@...nbsd.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: PCI: apple: Add missing 'power-domains' property

Hi,


On Thu, May 26, 2022, at 03:41, Rob Herring wrote:
> The 'unevaluatedProperties' schema checks is not fully working and doesn't
> catch some cases where there's a $ref to another schema. A fix is pending,
> but results in new warnings in examples.
>
> The Apple PCIe host has 3 power domains at least according to the example.
> Add the 'power-domains' property to the schema.
>
> Signed-off-by: Rob Herring <robh@...nel.org>
> ---
> Ideally, we'd define what each power domain is, but I don't know what
> they are.
> ---

I think the example is just wrong (or outdated) and we only need a single
power-domain for pcie.

The hierarchy is ps_pcie_ref -> ps_apcie -> ps_apcie_gp and the pcie
node then only depends on ps_apcie_gp.




Sven