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Diffstat (limited to 'Documentation/devicetree/bindings/mfd/twl4030-power.txt')
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diff --git a/Documentation/devicetree/bindings/mfd/twl4030-power.txt b/Documentation/devicetree/bindings/mfd/twl4030-power.txt new file mode 100644 index 000000000..3d1996331 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/twl4030-power.txt @@ -0,0 +1,48 @@ +Texas Instruments TWL family (twl4030) reset and power management module + +The power management module inside the TWL family provides several facilities +to control the power resources, including power scripts. For now, the +binding only supports the complete shutdown of the system after poweroff. + +Required properties: +- compatible : must be one of the following + "ti,twl4030-power" + "ti,twl4030-power-reset" + "ti,twl4030-power-idle" + "ti,twl4030-power-idle-osc-off" + +The use of ti,twl4030-power-reset is recommended at least on +3530 that needs a special configuration for warm reset to work. + +When using ti,twl4030-power-idle, the TI recommended configuration +for idle modes is loaded to the tlw4030 PMIC. + +When using ti,twl4030-power-idle-osc-off, the TI recommended +configuration is used with the external oscillator being shut +down during off-idle. Note that this does not work on all boards +depending on how the external oscillator is wired. + +Optional properties: + +- ti,system-power-controller: This indicates that TWL4030 is the + power supply master of the system. With this flag, the chip will + initiate an ACTIVE-to-OFF or SLEEP-to-OFF transition when the + system poweroffs. + +- ti,use_poweroff: Deprecated name for ti,system-power-controller + +Example: +&i2c1 { + clock-frequency = <2600000>; + + twl: twl@48 { + reg = <0x48>; + interrupts = <7>; /* SYS_NIRQ cascaded to intc */ + interrupt-parent = <&intc>; + + twl_power: power { + compatible = "ti,twl4030-power"; + ti,use_poweroff; + }; + }; +}; |