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* ROHM BD9571MWV Power Management Integrated Circuit (PMIC) bindings
Required properties:
- compatible : Should be "rohm,bd9571mwv".
- reg : I2C slave address.
- interrupt-parent : Phandle to the parent interrupt controller.
- interrupts : The interrupt line the device is connected to.
- interrupt-controller : Marks the device node as an interrupt controller.
- #interrupt-cells : The number of cells to describe an IRQ, should be 2.
The first cell is the IRQ number.
The second cell is the flags, encoded as trigger
masks from ../interrupt-controller/interrupts.txt.
- gpio-controller : Marks the device node as a GPIO Controller.
- #gpio-cells : Should be two. The first cell is the pin number and
the second cell is used to specify flags.
See ../gpio/gpio.txt for more information.
- regulators: : List of child nodes that specify the regulator
initialization data. Child nodes must be named
after their hardware counterparts:
- vd09
- vd18
- vd25
- vd33
- dvfs
Each child node is defined using the standard
binding for regulators.
Optional properties:
- rohm,ddr-backup-power : Value to use for DDR-Backup Power (default 0).
This is a bitmask that specifies which DDR power
rails need to be kept powered when backup mode is
entered, for system suspend:
- bit 0: DDR0
- bit 1: DDR1
- bit 2: DDR0C
- bit 3: DDR1C
These bits match the KEEPON_DDR* bits in the
documentation for the "BKUP Mode Cnt" register.
- rohm,rstbmode-level: The RSTB signal is configured for level mode, to
accommodate a toggle power switch (the RSTBMODE pin is
strapped low).
- rohm,rstbmode-pulse: The RSTB signal is configured for pulse mode, to
accommodate a momentary power switch (the RSTBMODE pin
is strapped high).
The two properties above are mutually exclusive.
Example:
pmic: pmic@30 {
compatible = "rohm,bd9571mwv";
reg = <0x30>;
interrupt-parent = <&gpio2>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
rohm,ddr-backup-power = <0xf>;
rohm,rstbmode-pulse;
regulators {
dvfs: dvfs {
regulator-name = "dvfs";
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1030000>;
regulator-boot-on;
regulator-always-on;
};
};
};
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