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