1The Broadcom Secure Processing Unit (SPU) hardware supports symmetric 2cryptographic offload for Broadcom SoCs. A SoC may have multiple SPU hardware 3blocks. 4 5Required properties: 6- compatible: Should be one of the following: 7 brcm,spum-crypto - for devices with SPU-M hardware 8 brcm,spu2-crypto - for devices with SPU2 hardware 9 brcm,spu2-v2-crypto - for devices with enhanced SPU2 hardware features like SHA3 10 and Rabin Fingerprint support 11 brcm,spum-nsp-crypto - for the Northstar Plus variant of the SPU-M hardware 12 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