From a91d2f8d6e4c0fd3d6e1a2b5609eb93b114effb6 Mon Sep 17 00:00:00 2001 From: Gyungoh Yoo Date: Wed, 15 Aug 2012 10:28:46 -0600 Subject: mfd: Add MAX8907 core driver The MAX8907 is an I2C-based power-management IC containing voltage regulators, a reset controller, a real-time clock, and a touch-screen controller. The original driver was written by: * Gyungoh Yoo Various fixes and enhancements by: * Jin Park * Tom Cherry * Prashant Gaikwad * Dan Willemsen * Laxman Dewangan During upstreaming, I (swarren): * Converted to regmap. * Converted to regmap-irq. * Allowed probing from device tree. * Renamed from max8907c->max8907, since the driver covers at least the C and B revisions. * General cleanup. Signed-off-by: Gyungoh Yoo Signed-off-by: Stephen Warren Reviewed-by: Mark Brown #v3 Signed-off-by: Samuel Ortiz --- .../devicetree/bindings/regulator/max8907.txt | 71 ++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/max8907.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/max8907.txt b/Documentation/devicetree/bindings/regulator/max8907.txt new file mode 100644 index 000000000000..4fd847f0afc0 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/max8907.txt @@ -0,0 +1,71 @@ +MAX8907 regulator + +Required properties: +- compatible: "maxim,max8907" +- reg: I2C slave address +- interrupts: The interrupt output of the controller +- mbatt-supply: The input supply for MBATT, BBAT, SDBY, VRTC. +- in-v1-supply: The input supply for SD1. +- in-v2-supply: The input supply for SD2. +- in-v3-supply: The input supply for SD3. +- in1-supply: The input supply for LDO1. +... +- in20-supply: The input supply for LDO20. +- regulators: A node that houses a sub-node for each regulator within the + device. Each sub-node is identified using the regulator-compatible + property, with valid values listed below. The content of each sub-node + is defined by the standard binding for regulators; see regulator.txt. + +Valid regulator-compatible values are: + + sd1, sd2, sd3, ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, ldo8, ldo9, ldo10, + ldo11, ldo12, ldo13, ldo14, ldo15, ldo16, ldo17, ldo18, ldo19, ldo20, out5v, + out33v, bbat, sdby, vrtc. + +Example: + + max8907@3c { + compatible = "maxim,max8907"; + reg = <0x3c>; + interrupts = <0 86 0x4>; + + mbatt-supply = <&some_reg>; + in-v1-supply = <&mbatt_reg>; + ... + in1-supply = <&mbatt_reg>; + ... + + regulators { + #address-cells = <1>; + #size-cells = <0>; + + mbatt_reg: regulator@0 { + reg = <0>; + regulator-compatible = "mbatt"; + regulator-name = "vbat_pmu"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + regulator-always-on; + }; + + regulator@1 { + reg = <1>; + regulator-compatible = "sd1"; + regulator-name = "nvvdd_sv1,vdd_cpu_pmu"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + }; + + regulator@2 { + reg = <2>; + regulator-compatible = "sd2"; + regulator-name = "nvvdd_sv2,vdd_core"; + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + regulator-always-on; + }; +... + }; + }; + }; -- cgit v1.2.1