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

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Message-ID: <20220526214549.GA315754-robh@kernel.org>
Date:   Thu, 26 May 2022 16:45:49 -0500
From:   Rob Herring <robh@...nel.org>
To:     Sven Peter <sven@...npeter.dev>
Cc:     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>,
        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

On Thu, May 26, 2022 at 03:48:15PM +0200, Sven Peter wrote:
> 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 I think the example is just wrong (or outdated) and we only need a single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.

Okay, I'll update the example and schema.