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ti,system-power-controller is more or less the standard way of indicating that the PMIC is the system wide power controller and hence may be used to switch off the system. Almost ALL TI PMIC drivers and many Maxim PMIC drivers follow the same style. So support 'ti,system-power-controller' in addition to the usual 'ti,use_poweroff' to indicate that the PMIC instance has control for switching off the system. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
Texas Instruments TWL family (twl4030) reset and power management module
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The power management module inside the TWL family provides several facilities
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to control the power resources, including power scripts. For now, the
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binding only supports the complete shutdown of the system after poweroff.
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Required properties:
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- compatible : must be one of the following
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"ti,twl4030-power"
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"ti,twl4030-power-reset"
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"ti,twl4030-power-idle"
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"ti,twl4030-power-idle-osc-off"
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The use of ti,twl4030-power-reset is recommended at least on
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3530 that needs a special configuration for warm reset to work.
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When using ti,twl4030-power-idle, the TI recommended configuration
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for idle modes is loaded to the tlw4030 PMIC.
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When using ti,twl4030-power-idle-osc-off, the TI recommended
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configuration is used with the external oscillator being shut
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down during off-idle. Note that this does not work on all boards
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depending on how the external oscillator is wired.
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Optional properties:
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- ti,system-power-controller: This indicates that TWL4030 is the
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power supply master of the system. With this flag, the chip will
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initiate an ACTIVE-to-OFF or SLEEP-to-OFF transition when the
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system poweroffs.
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- ti,use_poweroff: Deprecated name for ti,system-power-controller
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Example:
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&i2c1 {
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clock-frequency = <2600000>;
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twl: twl@48 {
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reg = <0x48>;
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interrupts = <7>; /* SYS_NIRQ cascaded to intc */
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interrupt-parent = <&intc>;
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twl_power: power {
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compatible = "ti,twl4030-power";
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ti,use_poweroff;
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};
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};
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};
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