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Date: Fri, 5 Jan 2024 17:30:53 +0100
From: Stephan Gerhold <stephan@gerhold.net>
To: Luca Weiss <luca.weiss@fairphone.com>
Cc: Andy Gross <agross@kernel.org>, Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Thara Gopinath <thara.gopinath@gmail.com>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	"David S. Miller" <davem@davemloft.net>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Bhupesh Sharma <bhupesh.sharma@linaro.org>,
	~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org,
	linux-crypto@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm6350: Add Crypto Engine
Message-ID: <ZZguvdJTyVgfxm4D@gerhold.net>
References: <20240105-sm6350-qce-v1-0-416e5c7319ac@fairphone.com>
 <20240105-sm6350-qce-v1-2-416e5c7319ac@fairphone.com>
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On Fri, Jan 05, 2024 at 05:15:44PM +0100, Luca Weiss wrote:
> Add crypto engine (CE) and CE BAM related nodes and definitions for this
> SoC.
> 
> For reference:
> 
>   [    2.297419] qcrypto 1dfa000.crypto: Crypto device found, version 5.5.1
> 
> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
> ---
>  arch/arm64/boot/dts/qcom/sm6350.dtsi | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> index 8fd6f4d03490..516aadbb16bb 100644
> --- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> @@ -1212,6 +1212,37 @@ ufs_mem_phy_lanes: phy@1d87400 {
>  			};
>  		};
>  
> +		cryptobam: dma-controller@1dc4000 {
> +			compatible = "qcom,bam-v1.7.4", "qcom,bam-v1.7.0";
> +			reg = <0 0x01dc4000 0 0x24000>;
> +			interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			qcom,ee = <0>;
> +			qcom,controlled-remotely;
> +			num-channels = <16>;
> +			qcom,num-ees = <4>;
> +			iommus = <&apps_smmu 0x432 0x0000>,
> +				 <&apps_smmu 0x438 0x0001>,
> +				 <&apps_smmu 0x43f 0x0000>,
> +				 <&apps_smmu 0x426 0x0011>,
> +				 <&apps_smmu 0x436 0x0011>;

The last two lines look equivalent to me: 0x436 & ~0x0011 = 0x426.

It's also a bit weird that the mask has one more digit than the stream
ID. And ordered numerically (by stream ID, first number) it would be a
bit easier to read. :-)

Thanks,
Stephan