Merge tag 'regulator-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 - Support for putting regulators into bypass mode where they simply
   switch their input to the output (mainly used for low power
   retention).
 - A new API for setting voltages based on a voltage plus tolerance
   rather than an explicit voltage range.
 - Lots of cleanups and API updates from Axel Lin.
 - New driver for MAX8907.

* tag 'regulator-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (71 commits)
  regulator: arizona-ldo: Remove top voltage
  regulator: tps6586x: remove regulator-compatible from DT docs
  regulator: tps65217.txt: remove regulator-compatible from DT docs
  regulator: deprecate regulator-compatible DT property
  regulator: fan53555: remove vsel_max not used
  regulator: aat2870: Don't explicitly initialise the first field
  extcon: arizona: Use bypass mode for MICVDD
  regulator: wm831x-ldo: Add bypass support
  regulator: arizona-micsupp: Support get/set bypass
  regulator: arizona-ldo: Support get/set bypass
  regulator: core: Provide regmap get/set bypass operations
  regulator: core: Support bypass mode
  regulator: Fairchild fan53555 support
  regulator: twl: Remove another unused variable warning
  regulator: core: Try using the parent device for the default regmap
  regulator: core: Fast path non-deferred disables
  regulator: core: Report microvolts in sysfs even with only list_voltage()
  regulator: tps6586x: add support for SYS rail
  regulator: lp872x: remove unnecessary function
  regulator: lp872x: fix NULL pointer access problem
  ...

4 files changed, 61 insertions, 69 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-regulator b/Documentation/ABI/testing/sysfs-class-regulator
index e091fa87379..bc578bc6062 100644
--- a/Documentation/ABI/testing/sysfs-class-regulator
+++ b/Documentation/ABI/testing/sysfs-class-regulator
@@ -349,3 +349,24 @@ Description:
 
 		This will be one of the same strings reported by
 		the "state" attribute.
+
+What:		/sys/class/regulator/.../bypass
+Date:		September 2012
+KernelVersion:	3.7
+Contact:	Mark Brown <broonie@opensource.wolfsonmicro.com>
+Description:
+		Some regulator directories will contain a field called
+		bypass.  This indicates if the device is in bypass mode.
+
+		This will be one of the following strings:
+
+		'enabled'
+		'disabled'
+		'unknown'
+
+		'enabled' means the regulator is in bypass mode.
+
+		'disabled' means that the regulator is regulating.
+
+		'unknown' means software cannot determine the state, or
+		the reported state is invalid.
diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index 66ece3f87bb..ecfc6ccd67e 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -11,10 +11,13 @@ Optional properties:
 - regulator-boot-on: bootloader/firmware enabled regulator
 - <name>-supply: phandle to the parent supply/regulator node
 - regulator-ramp-delay: ramp delay for regulator(in uV/uS)
+
+Deprecated properties:
 - regulator-compatible: If a regulator chip contains multiple
   regulators, and if the chip's binding contains a child node that
   describes each regulator, then this property indicates which regulator
-  this child node is intended to configure.
+  this child node is intended to configure. If this property is missing,
+  the node's name will be used instead.
 
 Example:
 
diff --git a/Documentation/devicetree/bindings/regulator/tps65217.txt b/Documentation/devicetree/bindings/regulator/tps65217.txt
index 0487e9675ba..d316fb895da 100644
--- a/Documentation/devicetree/bindings/regulator/tps65217.txt
+++ b/Documentation/devicetree/bindings/regulator/tps65217.txt
@@ -22,66 +22,49 @@ Example:
 		compatible = "ti,tps65217";
 
 		regulators {
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			dcdc1_reg: regulator@0 {
-				reg = <0>;
-				regulator-compatible = "dcdc1";
+			dcdc1_reg: dcdc1 {
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			dcdc2_reg: regulator@1 {
-				reg = <1>;
-				regulator-compatible = "dcdc2";
+			dcdc2_reg: dcdc2 {
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			dcdc3_reg: regulator@2 {
-				reg = <2>;
-				regulator-compatible = "dcdc3";
+			dcdc3_reg: dcc3 {
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo1_reg: regulator@3 {
-				reg = <3>;
-				regulator-compatible = "ldo1";
+			ldo1_reg: ldo1 {
 				regulator-min-microvolt = <1000000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo2_reg: regulator@4 {
-				reg = <4>;
-				regulator-compatible = "ldo2";
+			ldo2_reg: ldo2 {
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo3_reg: regulator@5 {
-				reg = <5>;
-				regulator-compatible = "ldo3";
+			ldo3_reg: ldo3 {
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo4_reg: regulator@6 {
-				reg = <6>;
-				regulator-compatible = "ldo4";
+			ldo4_reg: ldo4 {
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
diff --git a/Documentation/devicetree/bindings/regulator/tps6586x.txt b/Documentation/devicetree/bindings/regulator/tps6586x.txt
index da80c2ae091..07b9ef6e49d 100644
--- a/Documentation/devicetree/bindings/regulator/tps6586x.txt
+++ b/Documentation/devicetree/bindings/regulator/tps6586x.txt
@@ -6,9 +6,13 @@ Required properties:
 - interrupts: the interrupt outputs of the controller
 - #gpio-cells: number of cells to describe a GPIO
 - gpio-controller: mark the device as a GPIO controller
-- regulators: list of regulators provided by this controller, must have
-  property "regulator-compatible" to match their hardware counterparts:
-  sm[0-2], ldo[0-9] and ldo_rtc
+- regulators: A node that houses a sub-node for each regulator within the
+  device. Each sub-node is identified using the node's name (or the deprecated
+  regulator-compatible property if present), with valid values listed below.
+  The content of each sub-node is defined by the standard binding for
+  regulators; see regulator.txt.
+  sys, sm[0-2], ldo[0-9] and ldo_rtc
+- sys-supply: The input supply for SYS.
 - vin-sm0-supply: The input supply for the SM0.
 - vin-sm1-supply: The input supply for the SM1.
 - vin-sm2-supply: The input supply for the SM2.
@@ -20,6 +24,9 @@ Required properties:
 
 Each regulator is defined using the standard binding for regulators.
 
+Note: LDO5 and LDO_RTC is supplied by SYS regulator internally and driver
+      take care of making proper parent child relationship.
+
 Example:
 
 	pmu: tps6586x@34 {
@@ -30,6 +37,7 @@ Example:
 		#gpio-cells = <2>;
 		gpio-controller;
 
+		sys-supply = <&some_reg>;
 		vin-sm0-supply = <&some_reg>;
 		vin-sm1-supply = <&some_reg>;
 		vin-sm2-supply = <&some_reg>;
@@ -40,103 +48,80 @@ Example:
 		vinldo9-supply = <...>;
 
 		regulators {
-			#address-cells = <1>;
-			#size-cells = <0>;
+			sys_reg: sys {
+				regulator-name = "vdd_sys";
+				regulator-boot-on;
+				regulator-always-on;
+			};
 
-			sm0_reg: regulator@0 {
-				reg = <0>;
-				regulator-compatible = "sm0";
+			sm0_reg: sm0 {
 				regulator-min-microvolt = < 725000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			sm1_reg: regulator@1 {
-				reg = <1>;
-				regulator-compatible = "sm1";
+			sm1_reg: sm1 {
 				regulator-min-microvolt = < 725000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			sm2_reg: regulator@2 {
-				reg = <2>;
-				regulator-compatible = "sm2";
+			sm2_reg: sm2 {
 				regulator-min-microvolt = <3000000>;
 				regulator-max-microvolt = <4550000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo0_reg: regulator@3 {
-				reg = <3>;
-				regulator-compatible = "ldo0";
+			ldo0_reg: ldo0 {
 				regulator-name = "PCIE CLK";
 				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo1_reg: regulator@4 {
-				reg = <4>;
-				regulator-compatible = "ldo1";
+			ldo1_reg: ldo1 {
 				regulator-min-microvolt = < 725000>;
 				regulator-max-microvolt = <1500000>;
 			};
 
-			ldo2_reg: regulator@5 {
-				reg = <5>;
-				regulator-compatible = "ldo2";
+			ldo2_reg: ldo2 {
 				regulator-min-microvolt = < 725000>;
 				regulator-max-microvolt = <1500000>;
 			};
 
-			ldo3_reg: regulator@6 {
-				reg = <6>;
-				regulator-compatible = "ldo3";
+			ldo3_reg: ldo3 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo4_reg: regulator@7 {
-				reg = <7>;
-				regulator-compatible = "ldo4";
+			ldo4_reg: ldo4 {
 				regulator-min-microvolt = <1700000>;
 				regulator-max-microvolt = <2475000>;
 			};
 
-			ldo5_reg: regulator@8 {
-				reg = <8>;
-				regulator-compatible = "ldo5";
+			ldo5_reg: ldo5 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo6_reg: regulator@9 {
-				reg = <9>;
-				regulator-compatible = "ldo6";
+			ldo6_reg: ldo6 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo7_reg: regulator@10 {
-				reg = <10>;
-				regulator-compatible = "ldo7";
+			ldo7_reg: ldo7 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo8_reg: regulator@11 {
-				reg = <11>;
-				regulator-compatible = "ldo8";
+			ldo8_reg: ldo8 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};
 
-			ldo9_reg: regulator@12 {
-				reg = <12>;
-				regulator-compatible = "ldo9";
+			ldo9_reg: ldo9 {
 				regulator-min-microvolt = <1250000>;
 				regulator-max-microvolt = <3300000>;
 			};