| Yadwinder Singh Brar | c1516f8 | 2012-07-06 17:02:55 +0530 | [diff] [blame^] | 1 | Maxim MAX77686 multi-function device |
| 2 | |
| 3 | MAX77686 is a Mulitifunction device with PMIC, RTC and Charger on chip. It is |
| 4 | interfaced to host controller using i2c interface. PMIC and Charger submodules |
| 5 | are addressed using same i2c slave address whereas RTC submodule uses |
| 6 | different i2c slave address,presently for which we are statically creating i2c |
| 7 | client while probing.This document describes the binding for mfd device and |
| 8 | PMIC submodule. |
| 9 | |
| 10 | Required properties: |
| 11 | - compatible : Must be "maxim,max77686"; |
| 12 | - reg : Specifies the i2c slave address of PMIC block. |
| 13 | - interrupts : This i2c device has an IRQ line connected to the main SoC. |
| 14 | - interrupt-parent : The parent interrupt controller. |
| 15 | |
| 16 | Optional node: |
| 17 | - voltage-regulators : The regulators of max77686 have to be instantiated |
| 18 | under subnode named "voltage-regulators" using the following format. |
| 19 | |
| 20 | regulator_name { |
| 21 | regulator-compatible = LDOn/BUCKn |
| 22 | standard regulator constraints.... |
| 23 | }; |
| 24 | refer Documentation/devicetree/bindings/regulator/regulator.txt |
| 25 | |
| 26 | The regulator-compatible property of regulator should initialized with string |
| 27 | to get matched with their hardware counterparts as follow: |
| 28 | |
| 29 | -LDOn : for LDOs, where n can lie in range 1 to 26. |
| 30 | example: LDO1, LDO2, LDO26. |
| 31 | -BUCKn : for BUCKs, where n can lie in range 1 to 9. |
| 32 | example: BUCK1, BUCK5, BUCK9. |
| 33 | |
| 34 | Example: |
| 35 | |
| 36 | max77686@09 { |
| 37 | compatible = "maxim,max77686"; |
| 38 | interrupt-parent = <&wakeup_eint>; |
| 39 | interrupts = <26 0>; |
| 40 | reg = <0x09>; |
| 41 | |
| 42 | voltage-regulators { |
| 43 | ldo11_reg { |
| 44 | regulator-compatible = "LDO11"; |
| 45 | regulator-name = "vdd_ldo11"; |
| 46 | regulator-min-microvolt = <1900000>; |
| 47 | regulator-max-microvolt = <1900000>; |
| 48 | regulator-always-on; |
| 49 | }; |
| 50 | |
| 51 | buck1_reg { |
| 52 | regulator-compatible = "BUCK1"; |
| 53 | regulator-name = "vdd_mif"; |
| 54 | regulator-min-microvolt = <950000>; |
| 55 | regulator-max-microvolt = <1300000>; |
| 56 | regulator-always-on; |
| 57 | regulator-boot-on; |
| 58 | }; |
| 59 | } |