linux-kernel - Re: [PATCH 5/6] dts:qcom:sdm845: Add dt entries to support crypto engine.

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Message-ID: <20201118041051.GF8532@builder.lan>
Date:   Tue, 17 Nov 2020 22:10:51 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Thara Gopinath <thara.gopinath@...aro.org>
Cc:     agross@...nel.org, herbert@...dor.apana.org.au,
        davem@...emloft.net, robh+dt@...nel.org, sboyd@...nel.org,
        mturquette@...libre.com, linux-arm-msm@...r.kernel.org,
        linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH 5/6] dts:qcom:sdm845: Add dt entries to support crypto
 engine.

On Tue 17 Nov 07:47 CST 2020, Thara Gopinath wrote:

> Add crypto engine (CE) and CE BAM related nodes and definitions to
> "sdm845.dtsi".
> 
> Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845.dtsi | 30 ++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 40e8c11f23ab..b5b2ea97681f 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -2138,6 +2138,36 @@ ufs_mem_phy_lanes: lanes@...7400 {
>  			};
>  		};
>  
> +		cryptobam: dma@...4000 {
> +			compatible = "qcom,bam-v1.7.0";
> +			reg = <0 0x01dc4000 0 0x24000>;
> +			interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&rpmhcc RPMH_CE_CLK>;
> +			clock-names = "bam_clk";
> +			#dma-cells = <1>;
> +			qcom,ee = <0>;
> +			qcom,controlled-remotely = <1>;
> +			iommus = <&apps_smmu 0x704 0x1>,
> +				 <&apps_smmu 0x706 0x1>,
> +				 <&apps_smmu 0x714 0x1>,
> +				 <&apps_smmu 0x716 0x1>;

Can you confirm that this can't be written as:

iommus = <&apps_smmu 0x704 0x3>,
	 <&apps_smmu 0x714 0x3>;

(and same below).

Regards,
Bjorn
> +		};
> +
> +		crypto: crypto@...a000 {
> +			compatible = "qcom,crypto-v5.4";
> +			reg = <0 0x01dfa000 0 0x6000>;
> +			clocks = <&gcc GCC_CE1_AHB_CLK>,
> +				 <&gcc GCC_CE1_AHB_CLK>,
> +				 <&rpmhcc RPMH_CE_CLK>;
> +			clock-names = "iface", "bus", "core";
> +			dmas = <&cryptobam 6>, <&cryptobam 7>;
> +			dma-names = "rx", "tx";
> +			iommus = <&apps_smmu 0x704 0x1>,
> +				 <&apps_smmu 0x706 0x1>,
> +				 <&apps_smmu 0x714 0x1>,
> +				 <&apps_smmu 0x716 0x1>;
> +		};
> +
>  		ipa: ipa@...0000 {
>  			compatible = "qcom,sdm845-ipa";
>  
> -- 
> 2.25.1
>