linux-kernel - Re: [PATCH v2 1/5] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Document the X1E80100 QMP PCIe PHY Gen4 x8

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Message-ID: <lrcridndulcurod7tc5z76tmfhcf5uqumkw7cijsqicmad2rim@blyor66wt4e4>
Date: Mon, 16 Sep 2024 17:15:27 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Qiang Yu <quic_qianyu@...cinc.com>
Cc: manivannan.sadhasivam@...aro.org, vkoul@...nel.org, kishon@...nel.org, 
	robh@...nel.org, andersson@...nel.org, konradybcio@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org, abel.vesa@...aro.org, 
	quic_msarkar@...cinc.com, quic_devipriy@...cinc.com, dmitry.baryshkov@...aro.org, 
	kw@...ux.com, lpieralisi@...nel.org, neil.armstrong@...aro.org, 
	linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	linux-pci@...r.kernel.org, devicetree@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v2 1/5] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy:
 Document the X1E80100 QMP PCIe PHY Gen4 x8

On Fri, Sep 13, 2024 at 01:37:20AM -0700, Qiang Yu wrote:
> PCIe 3rd instance of X1E80100 support Gen 4x8 which needs different 8 lane
> capable QMP PCIe PHY. Document Gen 4x8 PHY as separate module.

And this is really different hardware? Not just different number of lanes? We discussed it, but I don't see the explanation in commit msg.

> 
> Signed-off-by: Qiang Yu <quic_qianyu@...cinc.com>
> ---
>  .../devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml    | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> index dcf4fa55fbba..680ec3113c2b 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> @@ -41,6 +41,7 @@ properties:
>        - qcom,x1e80100-qmp-gen3x2-pcie-phy
>        - qcom,x1e80100-qmp-gen4x2-pcie-phy
>        - qcom,x1e80100-qmp-gen4x4-pcie-phy
> +      - qcom,x1e80100-qmp-gen4x8-pcie-phy
>  
>    reg:
>      minItems: 1
> @@ -172,6 +173,7 @@ allOf:
>                - qcom,sc8280xp-qmp-gen3x2-pcie-phy
>                - qcom,sc8280xp-qmp-gen3x4-pcie-phy
>                - qcom,x1e80100-qmp-gen4x4-pcie-phy
> +              - qcom,x1e80100-qmp-gen4x8-pcie-phy
>      then:
>        properties:
>          clocks:
> @@ -201,6 +203,7 @@ allOf:
>                - qcom,sm8550-qmp-gen4x2-pcie-phy
>                - qcom,sm8650-qmp-gen4x2-pcie-phy
>                - qcom,x1e80100-qmp-gen4x2-pcie-phy

Hm, why 4x4 is not here?

Best regards,
Krzysztof