linux-kernel - Re: [PATCH 1/2] dt-bindings: phy: qcom,qmp: Add PCIe qcom,refclk-always-on property

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Message-ID: <wt47mf6vx5fx5ddghwb4aljfjqftkplsc2zieays2xwjhkxag3@plromlkrbyxz>
Date:   Mon, 6 Nov 2023 08:20:52 -0800
From:   Bjorn Andersson <andersson@...nel.org>
To:     Krishna chaitanya chundru <quic_krichai@...cinc.com>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_vbadigan@...cinc.com, quic_ramkri@...cinc.com,
        quic_nitegupt@...cinc.com, quic_skananth@...cinc.com,
        quic_vpernami@...cinc.com, quic_parass@...cinc.com
Subject: Re: [PATCH 1/2] dt-bindings: phy: qcom,qmp: Add PCIe
 qcom,refclk-always-on property

On Mon, Nov 06, 2023 at 05:22:34PM +0530, Krishna chaitanya chundru wrote:
> Document qcom,refclk-always-on property which is needed in some platforms
> to supply refclk even in PCIe low power states.
> 
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
> ---
>  .../devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml          | 5 +++++
>  1 file changed, 5 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 2c3d6553a7ba..9daf0556ed3b 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> @@ -93,6 +93,11 @@ properties:
>    "#phy-cells":
>      const: 0
>  
> +  qcom,refclk-always-on:
> +    type: boolean
> +    description: A boolean property indicating the refclk is
> +      always on even in Low power states (optional)

As with the driver patch, please improve this description (and use your
80 characters).


It would also be preferable to capture (or at least indicate) the
problem that this flash is working around - so that future readers
doesn't need to go look in the commit history for the phy driver to
figure out what this is doing.

Regards,
Bjorn

> +
>  required:
>    - compatible
>    - reg
> 
> -- 
> 2.42.0
>