SoC bus device for the ARM SMCCC SOC_ID

modulename: soc_id.ko

configname: CONFIG_ARM_SMCCC_SOC_ID

Linux Kernel Configuration
└─>Device Drivers
└─>Firmware Drivers
└─>SoC bus device for the ARM SMCCC SOC_ID
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Include support for the SoC bus on the ARM SMCCC firmware based
platforms providing some sysfs information about the SoC variant.

source code: