linux-kernel - Re: [PATCH 09/15] dt-bindings: phy: qcom,qmp-pcie: mark current bindings as legacy

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Message-ID: <5e153119-f853-ff57-8277-2d782e255be2@linaro.org>
Date:   Mon, 17 Oct 2022 13:15:45 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Johan Hovold <johan+linaro@...nel.org>,
        Vinod Koul <vkoul@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/15] dt-bindings: phy: qcom,qmp-pcie: mark current
 bindings as legacy

On 17/10/2022 10:53, Johan Hovold wrote:
> The current QMP PCIe PHY bindings are based on the original MSM8996
> binding which provided multiple PHYs per IP block and these in turn were
> described by child nodes.
> 
> Later QMP PCIe PHY blocks only provide a single PHY and the remnant
> child node does not really reflect the hardware.
> 
> The original MSM8996 binding also ended up describing the individual
> register blocks as belonging to either the wrapper node or the PHY child
> nodes.
> 
> This is an unnecessary level of detail which has lead to problems when
> later IP blocks using different register layouts have been forced to fit
> the original mould rather than updating the binding. The bindings are
> arguable also incomplete as they only the describe register blocks used
> by the current Linux drivers (e.g. does not include the per lane PCS
> registers).
> 
> In preparation for adding new bindings for SC8280XP which further
> bindings can be based on, mark the current bindings as "legacy".
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> ---
>  .../{qcom,qmp-pcie-phy.yaml => qcom,qmp-pcie-phy-legacy.yaml} | 4 ++--

I don't think we should rename anything as legacy. These are "normal"
platforms, not legacy ones. SM8450 is not even that old.

The recommendation is to keep names matching the compatibles, not adding
some legacy/newer/newest suffixes.

Best regards,
Krzysztof