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Maxim MAX77693 multi-function device | ||
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MAX77693 is a Multifunction device with the following submodules: | ||
- PMIC, | ||
- CHARGER, | ||
- LED, | ||
- MUIC, | ||
- HAPTIC | ||
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It is interfaced to host controller using i2c. | ||
This document describes the bindings for the mfd device. | ||
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Required properties: | ||
- compatible : Must be "maxim,max77693". | ||
- reg : Specifies the i2c slave address of PMIC block. | ||
- interrupts : This i2c device has an IRQ line connected to the main SoC. | ||
- interrupt-parent : The parent interrupt controller. | ||
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Optional properties: | ||
- regulators : The regulators of max77693 have to be instantiated under subnod | ||
named "regulators" using the following format. | ||
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regulators { | ||
regualtor-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER | ||
standard regulator constratints[*]. | ||
}; | ||
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[*] refer Documentation/devicetree/bindings/regulator/regulator.txt | ||
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Example: | ||
max77693@66 { | ||
compatible = "maxim,max77693"; | ||
reg = <0x66>; | ||
interrupt-parent = <&gpx1>; | ||
interrupts = <5 2>; | ||
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regulators { | ||
esafeout@1 { | ||
regulator-compatible = "ESAFEOUT1"; | ||
regulator-name = "ESAFEOUT1"; | ||
regulator-boot-on; | ||
}; | ||
esafeout@2 { | ||
regulator-compatible = "ESAFEOUT2"; | ||
regulator-name = "ESAFEOUT2"; | ||
}; | ||
charger@0 { | ||
regulator-compatible = "CHARGER"; | ||
regulator-name = "CHARGER"; | ||
regulator-min-microamp = <60000>; | ||
regulator-max-microamp = <2580000>; | ||
regulator-boot-on; | ||
}; | ||
}; | ||
}; |
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Binding for TI/National Semiconductor LP872x Driver | ||
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Required properties: | ||
- compatible: "ti,lp8720" or "ti,lp8725" | ||
- reg: I2C slave address. 0x7d = LP8720, 0x7a = LP8725 | ||
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Optional properties: | ||
- ti,general-config: the value of LP872X_GENERAL_CFG register (u8) | ||
(LP8720) | ||
bit[2]: BUCK output voltage control by external DVS pin or register | ||
1 = external pin, 0 = bit7 of register 08h | ||
bit[1]: sleep control by external DVS pin or register | ||
1 = external pin, 0 = bit6 of register 08h | ||
bit[0]: time step unit(usec). 1 = 25, 0 = 50 | ||
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(LP8725) | ||
bit[7:6]: time step unit(usec). 00 = 32, 01 = 64, 10 = 128, 11 = 256 | ||
bit[4]: BUCK2 enable control. 1 = enable, 0 = disable | ||
bit[3]: BUCK2 output voltage register address. 1 = 0Ah, 0 = 0Bh | ||
bit[2]: BUCK1 output voltage control by external DVS pin or register | ||
1 = register 08h, 0 = DVS | ||
bit[1]: LDO sleep control. 1 = sleep mode, 0 = normal | ||
bit[0]: BUCK1 enable control, 1 = enable, 0 = disable | ||
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For more details, please see the datasheet. | ||
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- ti,update-config: define it when LP872X_GENERAL_CFG register should be set | ||
- ti,dvs-gpio: GPIO specifier for external DVS pin control of LP872x devices. | ||
- ti,dvs-vsel: DVS selector. 0 = SEL_V1, 1 = SEL_V2. | ||
- ti,dvs-state: initial DVS pin state. 0 = DVS_LOW, 1 = DVS_HIGH. | ||
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Sub nodes for regulator_init_data | ||
LP8720 has maximum 6 nodes. (child name: ldo1 ~ 5 and buck) | ||
LP8725 has maximum 9 nodes. (child name: ldo1 ~ 5, lilo1,2 and buck1,2) | ||
For more details, please see the following binding document. | ||
(Documentation/devicetree/bindings/regulator/regulator.txt) | ||
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Datasheet | ||
- LP8720: http://www.ti.com/lit/ds/symlink/lp8720.pdf | ||
- LP8725: http://www.ti.com/lit/ds/symlink/lp8725.pdf | ||
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Example 1) LP8720 | ||
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lp8720@7d { | ||
compatible = "ti,lp8720"; | ||
reg = <0x7d>; | ||
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/* external DVS pin used, timestep is 25usec */ | ||
ti,general-config = /bits/ 8 <0x03>; | ||
ti,update-config; | ||
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/* | ||
* The dvs-gpio depends on the processor environment. | ||
* For example, following GPIO specifier means GPIO134 in OMAP4. | ||
*/ | ||
ti,dvs-gpio = <&gpio5 6 0>; | ||
ti,dvs-vsel = /bits/ 8 <1>; /* SEL_V2 */ | ||
ti,dvs-state = /bits/ 8 <1>; /* DVS_HIGH */ | ||
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vaf: ldo1 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vmmc: ldo2 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcam_io: ldo3 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
regulator-boot-on; | ||
}; | ||
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vcam_core: ldo4 { | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <2850000>; | ||
regulator-boot-on; | ||
}; | ||
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vcam: ldo5 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcc: buck { | ||
regulator-name = "VBUCK"; | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <2300000>; | ||
}; | ||
}; | ||
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Example 2) LP8725 | ||
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lp8725@7a { | ||
compatible = "ti,lp8725"; | ||
reg = <0x7a>; | ||
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/* Enable BUCK1,2, no DVS, normal LDO mode, timestep is 256usec */ | ||
ti,general-config = /bits/ 8 <0xdd>; | ||
ti,update-config; | ||
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vcam_io: ldo1 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcam_core: ldo2 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcam: ldo3 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcmmb_io: ldo4 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
regulator-boot-on; | ||
}; | ||
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vcmmb_core: ldo5 { | ||
regulator-min-microvolt = <1200000>; | ||
regulator-max-microvolt = <3300000>; | ||
regulator-boot-on; | ||
}; | ||
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vaux1: lilo1 { | ||
regulator-name = "VAUX1"; | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vaux2: lilo2 { | ||
regulator-name = "VAUX2"; | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <3300000>; | ||
}; | ||
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vcc1: buck1 { | ||
regulator-name = "VBUCK1"; | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <3000000>; | ||
regulator-min-microamp = <460000>; | ||
regulator-max-microamp = <1370000>; | ||
regulator-boot-on; | ||
}; | ||
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vcc2: buck2 { | ||
regulator-name = "VBUCK2"; | ||
regulator-min-microvolt = <800000>; | ||
regulator-max-microvolt = <3000000>; | ||
regulator-min-microamp = <460000>; | ||
regulator-max-microamp = <1370000>; | ||
regulator-boot-on; | ||
}; | ||
}; |
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Documentation/devicetree/bindings/regulator/max8973-regulator.txt
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* Maxim MAX8973 Voltage Regulator | ||
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Required properties: | ||
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- compatible: must be "maxim,max8973" | ||
- reg: the i2c slave address of the regulator. It should be 0x1b. | ||
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Any standard regulator properties can be used to configure the single max8973 | ||
DCDC. | ||
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Example: | ||
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max8973@1b { | ||
compatible = "maxim,max8973"; | ||
reg = <0x1b>; | ||
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regulator-min-microvolt = <935000>; | ||
regulator-max-microvolt = <1200000>; | ||
regulator-boot-on; | ||
regulator-always-on; | ||
}; |
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