linux-kernel - Re: [PATCH] Revert "dt-bindings: PCI: qcom: Add iommu-map properties"

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Message-ID: <ZDaxvBK9IqAhZwIM@lpieralisi>
Date:   Wed, 12 Apr 2023 15:27:24 +0200
From:   Lorenzo Pieralisi <lpieralisi@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc:     Rob Herring <robh@...nel.org>, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, bhelgaas@...gle.com,
        konrad.dybcio@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "dt-bindings: PCI: qcom: Add iommu-map properties"

On Wed, Apr 12, 2023 at 04:59:18PM +0530, Manivannan Sadhasivam wrote:

[...]

> > > This is fine. The plan is to remove the "iommus" property from Qcom PCI binding
> > > since we have removed the usage of that property from devicetree [1]. Initially
> > > the iommu properties were not documented at all in the binding. But commit,
> > > "dt-bindings: PCI: qcom: Add SM8550 compatible" added them to the binding to
> > > satisfy dtbs check. But in parallel, the patch removing "iommus" property from
> > > dts got merged to qcom tree.
> > > 
> > > So now we have 2 options here:
> > > 
> > > 1. Amend the commit "dt-bindings: PCI: qcom: Add SM8550 compatible" to remove
> > > the "iommus" property.
> > > 
> > > 2. I will submit a separate patch removing that property.
> > > 
> > > Lorenzo, let me know what works for you. Sorry for the mess! Confusion happened
> > > due to patches getting applied without sync.
> > 
> > You can inline a diff here for (1), I will amend the commit.
> > 
> 
> Here you go:
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> index a1318a4ecadf..1548a7114732 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> @@ -60,9 +60,6 @@ properties:
>      minItems: 1
>      maxItems: 8
>  
> -  iommus:
> -    maxItems: 1
> -
>    iommu-map:
>      maxItems: 2

Done, please check, thanks.

Lorenzo