| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | The Broadcom Secure Processing Unit (SPU) hardware supports symmetric |
| 2 | cryptographic offload for Broadcom SoCs. A SoC may have multiple SPU hardware |
| 3 | blocks. |
| 4 | |
| 5 | Required 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 | |
| 17 | Example: |
| 18 | crypto@612d0000 { |
| 19 | compatible = "brcm,spum-crypto"; |
| 20 | reg = <0 0x612d0000 0 0x900>; |
| 21 | mboxes = <&pdc0 0>; |
| 22 | }; |