linux-kernel - Re: [PATCH v6 1/4 RESEND] ARM: dts: qcom: Use new compatibles for crypto nodes

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Message-ID: <bb577304-f048-8fd5-fc7a-47a0897ba792@linaro.org>
Date:   Tue, 20 Sep 2022 09:25:50 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org
Cc:     agross@...nel.org, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, thara.gopinath@...il.com,
        devicetree@...r.kernel.org, robh@...nel.org, andersson@...nel.org,
        bhupesh.linux@...il.com, catalin.marinas@....com, will@...nel.org,
        arnd@...db.de, Jordan Crouse <jorcrous@...zon.com>
Subject: Re: [PATCH v6 1/4 RESEND] ARM: dts: qcom: Use new compatibles for
 crypto nodes

On 20/09/2022 00:15, Bhupesh Sharma wrote:
> Since we are using soc specific qce crypto IP compatibles
> in the bindings now, use the same in the device tree files
> which include the crypto nodes.
> 
> Cc: Bjorn Andersson <andersson@...nel.org>
> Cc: Rob Herring <robh@...nel.org>
> Tested-by: Jordan Crouse <jorcrous@...zon.com>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
>  arch/arm/boot/dts/qcom-ipq4019.dtsi   | 2 +-
>  arch/arm64/boot/dts/qcom/ipq6018.dtsi | 2 +-
>  arch/arm64/boot/dts/qcom/ipq8074.dtsi | 2 +-
>  arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 +-
>  arch/arm64/boot/dts/qcom/sdm845.dtsi  | 2 +-
>  5 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/qcom-ipq4019.dtsi b/arch/arm/boot/dts/qcom-ipq4019.dtsi
> index b23591110bd2..9c40714562d5 100644
> --- a/arch/arm/boot/dts/qcom-ipq4019.dtsi
> +++ b/arch/arm/boot/dts/qcom-ipq4019.dtsi
> @@ -314,7 +314,7 @@ cryptobam: dma-controller@...4000 {
>  		};
>  
>  		crypto: crypto@...a000 {
> -			compatible = "qcom,crypto-v5.1";
> +			compatible = "qcom,ipq4019-qce";

There are few issues here:
1. Compatible is not documented.
2. Compatible is not supported by old kernel - ABI break.
3. Everything won't be bisectable...

The same in other places.

Best regards,
Krzysztof