linux-kernel - Re: [PATCH v3 3/4] dt-bindings: PCI: qcom: correct clocks for SM8150

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Date:   Fri, 8 Dec 2023 13:09:26 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: Re: [PATCH v3 3/4] dt-bindings: PCI: qcom: correct clocks for SM8150

On Fri, 8 Dec 2023 at 12:52, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> PCI node in Qualcomm SM8150 should have exactly 8 clocks, including the
> ref clock.
>
> Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>
> ---
>
> Please take the patch via PCI tree.
>
> Changes in v3:
> 1. New patch: Split from sc8180x change.
> 2. Add refclk as explained here:
>    https://lore.kernel.org/all/20231121065440.GB3315@thinkpad/
> ---
>  .../devicetree/bindings/pci/qcom,pcie.yaml    | 26 +++++++++++++++++++
>  1 file changed, 26 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> index 5214bf7a9045..a93ab3b54066 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.yaml
> @@ -559,6 +559,32 @@ allOf:
>            contains:
>              enum:
>                - qcom,pcie-sm8150
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 8
> +          maxItems: 8
> +        clock-names:
> +          items:
> +            - const: pipe # PIPE clock
> +            - const: aux # Auxiliary clock
> +            - const: cfg # Configuration clock
> +            - const: bus_master # Master AXI clock
> +            - const: bus_slave # Slave AXI clock
> +            - const: slave_q2a # Slave Q2A clock
> +            - const: tbu # PCIe TBU clock
> +            - const: ref # REFERENCE clock

Can we change the order of the tbu and ref clocks and fold this into
the sc810x case?

> +        resets:
> +          maxItems: 1
> +        reset-names:
> +          items:
> +            - const: pci # PCIe core reset
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
>                - qcom,pcie-sm8250
>      then:
>        oneOf:
> --
> 2.34.1
>
>


-- 
With best wishes
Dmitry