twl4030-power.txt (1504B)
1Texas Instruments TWL family (twl4030) reset and power management module 2 3The power management module inside the TWL family provides several facilities 4to control the power resources, including power scripts. For now, the 5binding only supports the complete shutdown of the system after poweroff. 6 7Required properties: 8- compatible : must be one of the following 9 "ti,twl4030-power" 10 "ti,twl4030-power-reset" 11 "ti,twl4030-power-idle" 12 "ti,twl4030-power-idle-osc-off" 13 14The use of ti,twl4030-power-reset is recommended at least on 153530 that needs a special configuration for warm reset to work. 16 17When using ti,twl4030-power-idle, the TI recommended configuration 18for idle modes is loaded to the tlw4030 PMIC. 19 20When using ti,twl4030-power-idle-osc-off, the TI recommended 21configuration is used with the external oscillator being shut 22down during off-idle. Note that this does not work on all boards 23depending on how the external oscillator is wired. 24 25Optional properties: 26 27- ti,system-power-controller: This indicates that TWL4030 is the 28 power supply master of the system. With this flag, the chip will 29 initiate an ACTIVE-to-OFF or SLEEP-to-OFF transition when the 30 system poweroffs. 31 32- ti,use_poweroff: Deprecated name for ti,system-power-controller 33 34Example: 35&i2c1 { 36 clock-frequency = <2600000>; 37 38 twl: twl@48 { 39 reg = <0x48>; 40 interrupts = <7>; /* SYS_NIRQ cascaded to intc */ 41 interrupt-parent = <&intc>; 42 43 twl_power: power { 44 compatible = "ti,twl4030-power"; 45 ti,use_poweroff; 46 }; 47 }; 48};