SSI protocol

modulename: ssi_protocol.ko

configname: CONFIG_SSI_PROTOCOL

Linux Kernel Configuration
└─>Device Drivers
└─>HSI support
└─>SSI protocol
In linux kernel since version 3.16 (release Date: 2014-08-03)  
If you say Y here, you will enable the SSI protocol aka McSAAB.

If unsure, say N.

source code:
drivers/hsi/clients/ssi_protocol.c