Re: [PATCH v2 2/2] arm64: dts: qcom: glymur: Add crypto engine and BAM

[Wenjia Zhang <wenjia.zhang@oss.qualcomm.com>]

On 5/5/2026 3:40 PM, Harshal Dev wrote:
> On almost all Qualcomm platforms, including Glymur, there is a Crypto
> engine IP block to which the CPU can off-load cryptographic computations
> for achieving acceleration.
> The engine is also DMA capable due to the presence of an associated Bus
> Access Manager (BAM) module.
>
> Describe the Crypto engine and its BAM.
>
> Signed-off-by: Harshal Dev <harshal.dev@oss.qualcomm.com>
> ---
>   arch/arm64/boot/dts/qcom/glymur.dtsi | 26 ++++++++++++++++++++++++++
>   1 file changed, 26 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/glymur.dtsi b/arch/arm64/boot/dts/qcom/glymur.dtsi
> index f23cf81ddb77..349da9966d52 100644
> --- a/arch/arm64/boot/dts/qcom/glymur.dtsi
> +++ b/arch/arm64/boot/dts/qcom/glymur.dtsi
> @@ -3675,6 +3675,32 @@ pcie3b_phy: phy@f10000 {
>   			status = "disabled";
>   		};
>   
> +		cryptobam: dma-controller@1dc4000 {
> +			compatible = "qcom,bam-v1.7.4", "qcom,bam-v1.7.0";
> +			reg = <0x0 0x01dc4000 0x0 0x28000>;
> +			interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			iommus = <&apps_smmu 0x80 0x0>,
> +				 <&apps_smmu 0x81 0x0>;
> +			qcom,ee = <0>;
> +			qcom,controlled-remotely;
> +			num-channels = <20>;
> +			qcom,num-ees = <4>;
> +		};
> +
> +		crypto: crypto@1dfa000 {
> +			compatible = "qcom,glymur-qce", "qcom,sm8150-qce", "qcom,qce";
> +			reg = <0x0 0x01dfa000 0x0 0x6000>;
> +			dmas = <&cryptobam 4>, <&cryptobam 5>;
> +			dma-names = "rx",
> +				    "tx";
> +			iommus = <&apps_smmu 0x80 0x0>,
> +				 <&apps_smmu 0x81 0x0>;
> +			interconnects = <&aggre1_noc MASTER_CRYPTO QCOM_ICC_TAG_ALWAYS
> +					 &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
> +			interconnect-names = "memory";
> +		};
> +
>   		tcsr_mutex: hwlock@1f40000 {
>   			compatible = "qcom,tcsr-mutex";
>   			reg = <0x0 0x01f40000 0x0 0x20000>;

Tested-by: Wenjia Zhang <wenjia.zhang@oss.qualcomm.com> # on Glymur-crd 
device

root@qcom-armv8a:~# bash /usr/libexec/libkcapi/kcapi-convenience.sh
[PASSED: 64-bit - 7.0.0-next-20260415-00003-g5de0c764975a-dirty] 
Convenience message digest operation
===================================================================
Number of failures: 0
root@qcom-armv8a:~#

Regards,

Wenjia