1* ROHM BD9571MWV/BD9574MWF Power Management Integrated Circuit (PMIC) bindings 2 3Required properties: 4 - compatible : Should be "rohm,bd9571mwv" or "rohm,bd9574mwf". 5 - reg : I2C slave address. 6 - interrupts : The interrupt line the device is connected to. 7 - interrupt-controller : Marks the device node as an interrupt controller. 8 - #interrupt-cells : The number of cells to describe an IRQ, should be 2. 9 The first cell is the IRQ number. 10 The second cell is the flags, encoded as trigger 11 masks from ../interrupt-controller/interrupts.txt. 12 - gpio-controller : Marks the device node as a GPIO Controller. 13 - #gpio-cells : Should be two. The first cell is the pin number and 14 the second cell is used to specify flags. 15 See ../gpio/gpio.txt for more information. 16 - regulators: : List of child nodes that specify the regulator 17 initialization data. Child nodes must be named 18 after their hardware counterparts: 19 - vd09 20 - vd18 21 - vd25 22 - vd33 23 - dvfs 24 Each child node is defined using the standard 25 binding for regulators. 26 27Optional properties: 28 - rohm,ddr-backup-power : Value to use for DDR-Backup Power (default 0). 29 This is a bitmask that specifies which DDR power 30 rails need to be kept powered when backup mode is 31 entered, for system suspend: 32 - bit 0: DDR0 33 - bit 1: DDR1 34 - bit 2: DDR0C 35 - bit 3: DDR1C 36 These bits match the KEEPON_DDR* bits in the 37 documentation for the "BKUP Mode Cnt" register. 38 - rohm,rstbmode-level: The RSTB signal is configured for level mode, to 39 accommodate a toggle power switch (the RSTBMODE pin is 40 strapped low). 41 - rohm,rstbmode-pulse: The RSTB signal is configured for pulse mode, to 42 accommodate a momentary power switch (the RSTBMODE pin 43 is strapped high). 44 The two properties above are mutually exclusive. 45 46Example: 47 48 pmic: pmic@30 { 49 compatible = "rohm,bd9571mwv"; 50 reg = <0x30>; 51 interrupt-parent = <&gpio2>; 52 interrupts = <0 IRQ_TYPE_LEVEL_LOW>; 53 interrupt-controller; 54 #interrupt-cells = <2>; 55 gpio-controller; 56 #gpio-cells = <2>; 57 rohm,ddr-backup-power = <0xf>; 58 rohm,rstbmode-pulse; 59 60 regulators { 61 dvfs: dvfs { 62 regulator-name = "dvfs"; 63 regulator-min-microvolt = <750000>; 64 regulator-max-microvolt = <1030000>; 65 regulator-boot-on; 66 regulator-always-on; 67 }; 68 }; 69 }; 70