What: /sys/devices/socX Date: January 2012 contact: Lee Jones Description: The /sys/devices/ directory contains a sub-directory for each System-on-Chip (SoC) device on a running platform. Information regarding each SoC can be obtained by reading sysfs files. This functionality is only available if implemented by the platform. The directory created for each SoC will also house information about devices which are commonly contained in /sys/devices/platform. It has been agreed that if an SoC device exists, its supported devices would be better suited to appear as children of that SoC. What: /sys/devices/socX/machine Date: January 2012 contact: Lee Jones Description: Read-only attribute common to all SoCs. Contains the SoC machine name (e.g. Ux500). What: /sys/devices/socX/family Date: January 2012 contact: Lee Jones Description: Read-only attribute common to all SoCs. Contains SoC family name (e.g. DB8500). What: /sys/devices/socX/serial_number Date: January 2019 contact: Bjorn Andersson Description: Read-only attribute supported by most SoCs. Contains the SoC's serial number, if available. What: /sys/devices/socX/soc_id Date: January 2012 contact: Lee Jones Description: Read-only attribute supported by most SoCs. In the case of ST-Ericsson's chips this contains the SoC serial number. What: /sys/devices/socX/revision Date: January 2012 contact: Lee Jones Description: Read-only attribute supported by most SoCs. Contains the SoC's manufacturing revision number. What: /sys/devices/socX/process Date: January 2012 contact: Lee Jones Description: Read-only attribute supported ST-Ericsson's silicon. Contains the the process by which the silicon chip was manufactured. What: /sys/bus/soc Date: January 2012 contact: Lee Jones Description: The /sys/bus/soc/ directory contains the usual sub-folders expected under most buses. /sys/bus/soc/devices is of particular interest, as it contains a symlink for each SoC device found on the system. Each symlink points back into the aforementioned /sys/devices/socX devices.