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