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1The Broadcom Secure Processing Unit (SPU) hardware supports symmetric2cryptographic offload for Broadcom SoCs. A SoC may have multiple SPU hardware3blocks.4 5Required properties:6- compatible: Should be one of the following:7 brcm,spum-crypto - for devices with SPU-M hardware8 brcm,spu2-crypto - for devices with SPU2 hardware9 brcm,spu2-v2-crypto - for devices with enhanced SPU2 hardware features like SHA310 and Rabin Fingerprint support11 brcm,spum-nsp-crypto - for the Northstar Plus variant of the SPU-M hardware12 13- reg: Should contain SPU registers location and length.14- mboxes: The mailbox channel to be used to communicate with the SPU.15 Mailbox channels correspond to DMA rings on the device.16 17Example:18 crypto@612d0000 {19 compatible = "brcm,spum-crypto";20 reg = <0 0x612d0000 0 0x900>;21 mboxes = <&pdc0 0>;22 };23