tjh.dev
Linux kernel mirror (for testing)
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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 };