1* Generic system power control capability 2 3Power-management integrated circuits or miscellaneous hardware components are 4sometimes able to control the system power. The device driver associated with these 5components might need to define this capability, which tells the kernel that 6it can be used to switch off the system. The corresponding device must have the 7standard property "system-power-controller" in its device node. This property 8marks the device as able to control the system power. In order to test if this 9property is found programmatically, use the helper function 10"of_device_is_system_power_controller" from of.h . 11 12Example: 13 14act8846: act8846@5 { 15 compatible = "active-semi,act8846"; 16 status = "okay"; 17 system-power-controller; 18} 19