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Date:   Fri, 10 Mar 2023 11:42:12 +0200
From:   Abel Vesa <abel.vesa@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Eric Biggers <ebiggers@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Bart Van Assche <bvanassche@....org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [RFC PATCH v2 7/7] arm64: dts: qcom: Add the Inline Crypto
 Engine nodes

On 23-03-10 10:37:42, Krzysztof Kozlowski wrote:
> On 10/03/2023 10:34, Abel Vesa wrote:
> >>> I assume you mean it breaks if someone is using old approach DTS with a
> >>> kernel that would have ICE driver merged. Yes, that it does. And for
> >>> that, in the v3, I'll make of_qcom_ice_get check if there is a reg entry
> >>> with name "ice" and create an ICE instance but for the same dev as the
> >>> consumer driver. OTOH, if there is no reg entry called "ice", it will
> >>> look up a device based on phande of qcom,ice property. This will allow
> >>> legacy style DTS to work fine, while using the unified driver as a
> >>> library, in that case. For newer platforms, the recommended approach
> >>> will be to add a new ICE node and use qcom,ice property.
> >>
> >> For the driver this sounds good. I still think that existing (older) DTS
> >> should not have regs removed, because this affects other users of kernel
> >> DTS.
> > 
> > Yes, that's what I meant, the already supported platforms will remain
> > with ice reg in the consumer node.
> 
> ... unless you plan to add to them UFS ICE, which would be nice feature
> thus justifying DTS re-shuffle :)

By supported I meant the ones that have ICE support already :)

> 
> Best regards,
> Krzysztof
> 

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