linux-kernel - Re: [PATCH 08/10] dt-bindings: phy: qcom,qmp-ufs: fix sc8280xp binding

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Message-ID: <02bf2278-a204-f258-48ff-18aeec4d2858@linaro.org>
Date:   Thu, 27 Oct 2022 22:11:45 -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 08/10] dt-bindings: phy: qcom,qmp-ufs: fix sc8280xp
 binding

On 24/10/2022 05:00, Johan Hovold wrote:
> The current QMP UFS PHY bindings are based on the original MSM8996 PCIe
> PHY binding which provided multiple PHYs per IP block and these in turn
> were described by child nodes.
> 
> The QMP UFS PHY block 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.
> 
> Add a new binding for the UFS QMP PHYs found on SC8280XP which further
> bindings can be based on.
> 
> Note that the current binding is simply removed instead of being
> deprecated as it was only recently merged and support for SC8280XP is
> still under development.
> 
> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>



Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof