The Broadcom Secure Processing Unit (SPU) hardware supports symmetric
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cryptographic offload for Broadcom SoCs. A SoC may have multiple SPU hardware
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blocks.
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Required properties:
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- compatible: Should be one of the following:
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brcm,spum-crypto - for devices with SPU-M hardware
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brcm,spu2-crypto - for devices with SPU2 hardware
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brcm,spu2-v2-crypto - for devices with enhanced SPU2 hardware features like SHA3
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and Rabin Fingerprint support
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brcm,spum-nsp-crypto - for the Northstar Plus variant of the SPU-M hardware
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- reg: Should contain SPU registers location and length.
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- mboxes: The mailbox channel to be used to communicate with the SPU.
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Mailbox channels correspond to DMA rings on the device.
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Example:
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crypto@612d0000 {
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compatible = "brcm,spum-crypto";
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reg = <0 0x612d0000 0 0x900>;
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mboxes = <&pdc0 0>;
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};
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