1Binding for Maxim MAX77686 regulators
2
3This is a part of the device tree bindings of MAX77686 multi-function device.
4More information can be found in ../mfd/max77686.txt file.
5
6The MAX77686 PMIC has 9 high-efficiency Buck and 26 Low-DropOut (LDO)
7regulators that can be controlled over I2C.
8
9Following properties should be present in main device node of the MFD chip.
10
11Optional node:
12- voltage-regulators : The regulators of max77686 have to be instantiated
13  under subnode named "voltage-regulators" using the following format.
14
15	regulator_name {
16		regulator-compatible = LDOn/BUCKn
17		standard regulator constraints....
18	};
19	refer Documentation/devicetree/bindings/regulator/regulator.txt
20
21  The regulator node's name should be initialized with a string
22to get matched with their hardware counterparts as follow:
23
24	-LDOn 	:	for LDOs, where n can lie in range 1 to 26.
25			example: LDO1, LDO2, LDO26.
26	-BUCKn 	:	for BUCKs, where n can lie in range 1 to 9.
27			example: BUCK1, BUCK5, BUCK9.
28
29  Regulators which can be turned off during system suspend:
30	-LDOn	:	2, 6-8, 10-12, 14-16,
31	-BUCKn	:	1-4.
32  Use standard regulator bindings for it ('regulator-off-in-suspend').
33
34  LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable
35  control. To turn this feature on this property must be added to the regulator
36  sub-node:
37	- maxim,ena-gpios :	one GPIO specifier enable control (the gpio
38				flags are actually ignored and always
39				ACTIVE_HIGH is used)
40
41Example:
42
43	max77686: pmic@9 {
44		compatible = "maxim,max77686";
45		interrupt-parent = <&wakeup_eint>;
46		interrupts = <26 IRQ_TYPE_LEVEL_LOW>;
47		reg = <0x09>;
48
49		voltage-regulators {
50			ldo11_reg: LDO11 {
51				regulator-name = "vdd_ldo11";
52				regulator-min-microvolt = <1900000>;
53				regulator-max-microvolt = <1900000>;
54				regulator-always-on;
55			};
56
57			buck1_reg: BUCK1 {
58				regulator-name = "vdd_mif";
59				regulator-min-microvolt = <950000>;
60				regulator-max-microvolt = <1300000>;
61				regulator-always-on;
62				regulator-boot-on;
63			};
64
65			buck9_reg: BUCK9 {
66				regulator-name = "CAM_ISP_CORE_1.2V";
67				regulator-min-microvolt = <1000000>;
68				regulator-max-microvolt = <1200000>;
69				maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>;
70			};
71	};
72