1*0ce5b307SRomain Perier* Generic system power control capability 28f73110fSRomain Perier 3*0ce5b307SRomain PerierPower-management integrated circuits or miscellaneous hardware components are 4*0ce5b307SRomain Periersometimes able to control the system power. The device driver associated with these 5*0ce5b307SRomain Periercomponents might need to define this capability, which tells the kernel that 6*0ce5b307SRomain Perierit can be used to switch off the system. The corresponding device must have the 7*0ce5b307SRomain Perierstandard property "system-power-controller" in its device node. This property 8*0ce5b307SRomain Periermarks the device as able to control the system power. In order to test if this 9*0ce5b307SRomain Perierproperty is found programmatically, use the helper function 10*0ce5b307SRomain Perier"of_device_is_system_power_controller" from of.h . 118f73110fSRomain Perier 128f73110fSRomain PerierExample: 138f73110fSRomain Perier 148f73110fSRomain Perieract8846: act8846@5 { 158f73110fSRomain Perier compatible = "active-semi,act8846"; 16*0ce5b307SRomain Perier system-power-controller; 178f73110fSRomain Perier} 18