mirror of https://gitee.com/openkylin/linux.git
63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
Maxim MAX77686 multi-function device
|
|
|
|
MAX77686 is a Mulitifunction device with PMIC, RTC and Charger on chip. It is
|
|
interfaced to host controller using i2c interface. PMIC and Charger submodules
|
|
are addressed using same i2c slave address whereas RTC submodule uses
|
|
different i2c slave address,presently for which we are statically creating i2c
|
|
client while probing.This document describes the binding for mfd device and
|
|
PMIC submodule.
|
|
|
|
Binding for the built-in 32k clock generator block is defined separately
|
|
in bindings/clk/maxim,max77686.txt file.
|
|
|
|
Required properties:
|
|
- compatible : Must be "maxim,max77686";
|
|
- 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.
|
|
|
|
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-compatible property of regulator should initialized with 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.
|
|
|
|
Example:
|
|
|
|
max77686@09 {
|
|
compatible = "maxim,max77686";
|
|
interrupt-parent = <&wakeup_eint>;
|
|
interrupts = <26 0>;
|
|
reg = <0x09>;
|
|
|
|
voltage-regulators {
|
|
ldo11_reg {
|
|
regulator-compatible = "LDO11";
|
|
regulator-name = "vdd_ldo11";
|
|
regulator-min-microvolt = <1900000>;
|
|
regulator-max-microvolt = <1900000>;
|
|
regulator-always-on;
|
|
};
|
|
|
|
buck1_reg {
|
|
regulator-compatible = "BUCK1";
|
|
regulator-name = "vdd_mif";
|
|
regulator-min-microvolt = <950000>;
|
|
regulator-max-microvolt = <1300000>;
|
|
regulator-always-on;
|
|
regulator-boot-on;
|
|
};
|
|
}
|