Commit ef062eb6 authored by Vladimir Zapolskiy's avatar Vladimir Zapolskiy Committed by Bjorn Andersson
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arm64: dts: qcom: msm8996: Add device tree entries to support crypto engine 



The change adds description of Qualcomm crypto engine controller and
BAM associated with it. The change is inspired by commit 3e482859
("dts: qcom: sdm845: Add dt entries to support crypto engine.")

While performance of cryptographic algorithms executed on QCE is lower
than e.g. ones tinkered for ARM NEON, the offloaded execution would
make sense:

    # cryptsetup benchmark | grep aes
    aes-cbc        128b        71.0 MiB/s        71.9 MiB/s
    aes-cbc        256b        62.4 MiB/s        62.4 MiB/s
    aes-xts        256b        70.7 MiB/s        70.8 MiB/s
    aes-xts        512b        62.0 MiB/s        63.3 MiB/s

Signed-off-by: default avatarVladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Cc: Thara Gopinath <thara.gopinath@linaro.org>
Acked-by: default avatarThara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211011094822.1580122-1-vladimir.zapolskiy@linaro.org
parent bb270c86

arch/arm64/boot/dts/qcom/msm8996.dtsi

+22 −0
Original line number Diff line number Diff line
@@ -705,6 +705,28 @@ 
			#thermal-sensor-cells = <1>;

		};



		cryptobam: dma@644000 {

			compatible = "qcom,bam-v1.7.0";

			reg = <0x00644000 0x24000>;

			interrupts = <GIC_SPI 206 IRQ_TYPE_LEVEL_HIGH>;

			clocks = <&gcc GCC_CE1_CLK>;

			clock-names = "bam_clk";

			#dma-cells = <1>;

			qcom,ee = <0>;

			qcom,controlled-remotely = <1>;

		};



		crypto: crypto@67a000 {

			compatible = "qcom,crypto-v5.4";

			reg = <0x0067a000 0x6000>;

			clocks = <&gcc GCC_CE1_AHB_CLK>,

				 <&gcc GCC_CE1_AXI_CLK>,

				 <&gcc GCC_CE1_CLK>;

			clock-names = "iface", "bus", "core";

			dmas = <&cryptobam 6>, <&cryptobam 7>;

			dma-names = "rx", "tx";

		};



		tcsr_mutex_regs: syscon@740000 {

			compatible = "syscon";

			reg = <0x00740000 0x40000>;