On 10/11/21 5:48 AM, Vladimir Zapolskiy wrote:
The change adds description of Qualcomm crypto engine controller and
BAM associated with it. The change is inspired by commit 3e482859f1ef
("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: Vladimir Zapolskiy <vladimir.zapolskiy@xxxxxxxxxx>
Cc: Thara Gopinath <thara.gopinath@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/msm8996.dtsi | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 52df22ab3f6a..a03cbeb58246 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -705,6 +705,28 @@ tsens1: thermal-sensor@4ad000 {
#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";
+ };
+
Hi Vlad,
Hi Vladimir,
I am surprised that you don't need to specify iommu to get this working.
Everything else looks okay to me, though I don't have the h/w to test.
So,
Acked-by: Thara Gopinath <thara.gopinath@xxxxxxxxxx>
tcsr_mutex_regs: syscon@740000 {
compatible = "syscon";
reg = <0x00740000 0x40000>;
--
Warm Regards
Thara (She/Her/Hers)
