forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.2 KiB
71 lines
2.2 KiB
Binding for Maxim MAX77686 regulators |
|
|
|
This is a part of the device tree bindings of MAX77686 multi-function device. |
|
More information can be found in ../mfd/max77686.txt file. |
|
|
|
The MAX77686 PMIC has 9 high-efficiency Buck and 26 Low-DropOut (LDO) |
|
regulators that can be controlled over I2C. |
|
|
|
Following properties should be present in main device node of the MFD chip. |
|
|
|
Optional node: |
|
- voltage-regulators : The regulators of max77686 have to be instantiated |
|
under subnode named "voltage-regulators" using the following format. |
|
|
|
regulator_name { |
|
regulator-compatible = LDOn/BUCKn |
|
standard regulator constraints.... |
|
}; |
|
refer Documentation/devicetree/bindings/regulator/regulator.txt |
|
|
|
The regulator node's name should be initialized with a string |
|
to get matched with their hardware counterparts as follow: |
|
|
|
-LDOn : for LDOs, where n can lie in range 1 to 26. |
|
example: LDO1, LDO2, LDO26. |
|
-BUCKn : for BUCKs, where n can lie in range 1 to 9. |
|
example: BUCK1, BUCK5, BUCK9. |
|
|
|
Regulators which can be turned off during system suspend: |
|
-LDOn : 2, 6-8, 10-12, 14-16, |
|
-BUCKn : 1-4. |
|
Use standard regulator bindings for it ('regulator-off-in-suspend'). |
|
|
|
LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable |
|
control. To turn this feature on this property must be added to the regulator |
|
sub-node: |
|
- maxim,ena-gpios : one GPIO specifier enable control (the gpio |
|
flags are actually ignored and always |
|
ACTIVE_HIGH is used) |
|
|
|
Example: |
|
|
|
max77686: pmic@9 { |
|
compatible = "maxim,max77686"; |
|
interrupt-parent = <&wakeup_eint>; |
|
interrupts = <26 IRQ_TYPE_NONE>; |
|
reg = <0x09>; |
|
|
|
voltage-regulators { |
|
ldo11_reg: LDO11 { |
|
regulator-name = "vdd_ldo11"; |
|
regulator-min-microvolt = <1900000>; |
|
regulator-max-microvolt = <1900000>; |
|
regulator-always-on; |
|
}; |
|
|
|
buck1_reg: BUCK1 { |
|
regulator-name = "vdd_mif"; |
|
regulator-min-microvolt = <950000>; |
|
regulator-max-microvolt = <1300000>; |
|
regulator-always-on; |
|
regulator-boot-on; |
|
}; |
|
|
|
buck9_reg: BUCK9 { |
|
regulator-name = "CAM_ISP_CORE_1.2V"; |
|
regulator-min-microvolt = <1000000>; |
|
regulator-max-microvolt = <1200000>; |
|
maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>; |
|
}; |
|
};
|
|
|