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Documentation / devicetree / bindings / mfd / twl4030-power.txt




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Based on kernel version 3.16. Page generated on 2014-08-06 21:37 EST.

1	Texas Instruments TWL family (twl4030) reset and power management module
2	
3	The power management module inside the TWL family provides several facilities
4	to control the power resources, including power scripts. For now, the
5	binding only supports the complete shutdown of the system after poweroff.
6	
7	Required 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	
14	The use of ti,twl4030-power-reset is recommended at least on
15	3530 that needs a special configuration for warm reset to work.
16	
17	When using ti,twl4030-power-idle, the TI recommended configuration
18	for idle modes is loaded to the tlw4030 PMIC.
19	
20	When using ti,twl4030-power-idle-osc-off, the TI recommended
21	configuration is used with the external oscillator being shut
22	down during off-idle. Note that this does not work on all boards
23	depending on how the external oscillator is wired.
24	
25	Optional properties:
26	- ti,use_poweroff: With this flag, the chip will initiates an ACTIVE-to-OFF or
27			   SLEEP-to-OFF transition when the system poweroffs.
28	
29	Example:
30	&i2c1 {
31		clock-frequency = <2600000>;
32	
33		twl: twl@48 {
34			reg = <0x48>;
35			interrupts = <7>; /* SYS_NIRQ cascaded to intc */
36			interrupt-parent = <&intc>;
37	
38			twl_power: power {
39				compatible = "ti,twl4030-power";
40				ti,use_poweroff;
41			};
42		};
43	};
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