linux-kernel - Re: [PATCH 13/19] dt-bindings: PCI: qcom-ep: Rename "mmio" region to "mhi"

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Date:   Wed, 8 Mar 2023 13:59:30 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     andersson@...nel.org, lpieralisi@...nel.org, kw@...ux.com,
        krzysztof.kozlowski+dt@...aro.org, robh@...nel.org,
        konrad.dybcio@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_srichara@...cinc.com
Subject: Re: [PATCH 13/19] dt-bindings: PCI: qcom-ep: Rename "mmio" region to
 "mhi"

On Tue, Mar 07, 2023 at 09:18:41AM +0100, Krzysztof Kozlowski wrote:
> On 06/03/2023 16:32, Manivannan Sadhasivam wrote:
> > As per Qualcomm's internal documentation, the name of the region is "mhi"
> > and not "mmio". So let's rename it to follow the convention.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > ---
> >  Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > index 89cfdee4b89f..c2d50f42cb4c 100644
> > --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > @@ -22,7 +22,7 @@ properties:
> >        - description: External local bus interface registers
> >        - description: Address Translation Unit (ATU) registers
> >        - description: Memory region used to map remote RC address space
> > -      - description: BAR memory region
> > +      - description: MHI register region used as BAR
> >  
> >    reg-names:
> >      items:
> > @@ -31,7 +31,7 @@ properties:
> >        - const: elbi
> >        - const: atu
> >        - const: addr_space
> > -      - const: mmio
> > +      - const: mhi
> 
> That literally breaks ABI just for convention. I don't think it's right
> approach.
> 

Hmm. I'll drop these two patches in next revision.

Thanks,
Mani

> Best regards,
> Krzysztof
> 

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