regulator: tps6507x: add device tree support.

Add device tree based initialization support for
TI's tps6507x regulators.
Add device tree binding document for TI's tps6507x
using datasheet:
http://www.ti.com/lit/ds/symlink/tps65070.pdf

Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mfd/tps6507x.txt b/Documentation/devicetree/bindings/mfd/tps6507x.txt
new file mode 100755
index 000000000000..8fffa3c5ed40
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/tps6507x.txt
@@ -0,0 +1,91 @@
+TPS6507x Power Management Integrated Circuit
+
+Required properties:
+- compatible: "ti,tps6507x"
+- reg: I2C slave address
+- regulators: This is the list of child nodes that specify the regulator
+  initialization data for defined regulators. Not all regulators for the
+  given device need to be present. The definition for each of these nodes
+  is defined using the standard binding for regulators found at
+  Documentation/devicetree/bindings/regulator/regulator.txt.
+  The regulator is matched with the regulator-compatible.
+
+  The valid regulator-compatible values are:
+  tps6507x: vdcdc1, vdcdc2, vdcdc3, vldo1, vldo2
+- xxx-supply: Input voltage supply regulator.
+  These entries are required if regulators are enabled for a device.
+  Missing of these properties can cause the regulator registration
+  fails.
+  If some of input supply is powered through battery or always-on
+  supply then also it is require to have these parameters with proper
+  node handle of always on power supply.
+  tps6507x:
+       vindcdc1_2-supply: VDCDC1 and VDCDC2 input.
+       vindcdc3-supply  : VDCDC3 input.
+       vldo1_2-supply   : VLDO1 and VLDO2 input.
+
+Regulator Optional properties:
+- defdcdc_default: It's property of DCDC2 and DCDC3 regulators.
+                        0: If defdcdc pin of DCDC2/DCDC3 is pulled to GND.
+                        1: If defdcdc pin of DCDC2/DCDC3 is driven HIGH.
+  If this property is not defined, it defaults to 0 (not enabled).
+
+Example:
+
+        pmu: tps6507x@48 {
+                compatible = "ti,tps6507x";
+                reg = <0x48>;
+
+                vindcdc1_2-supply = <&vbat>;
+                vindcdc3-supply = <...>;
+                vinldo1_2-supply = <...>;
+
+                regulators {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        vdcdc1_reg: regulator@0 {
+                                regulator-compatible = "VDCDC1";
+                                reg = <0>;
+                                regulator-min-microvolt = <3150000>;
+                                regulator-max-microvolt = <3450000>;
+                                regulator-always-on;
+                                regulator-boot-on;
+                        };
+                        vdcdc2_reg: regulator@1 {
+                                regulator-compatible = "VDCDC2";
+                                reg = <1>;
+                                regulator-min-microvolt = <1710000>;
+                                regulator-max-microvolt = <3450000>;
+                                regulator-always-on;
+                                regulator-boot-on;
+                                defdcdc_default = <1>;
+                        };
+                        vdcdc3_reg: regulator@2 {
+                                regulator-compatible = "VDCDC3";
+                                reg = <2>;
+                                regulator-min-microvolt = <950000>
+                                regulator-max-microvolt = <1350000>;
+                                regulator-always-on;
+                                regulator-boot-on;
+                                defdcdc_default = <1>;
+                        };
+                        ldo1_reg: regulator@3 {
+                                regulator-compatible = "LDO1";
+                                reg = <3>;
+                                regulator-min-microvolt = <1710000>;
+                                regulator-max-microvolt = <1890000>;
+                                regulator-always-on;
+                                regulator-boot-on;
+                        };
+                        ldo2_reg: regulator@4 {
+                                regulator-compatible = "LDO2";
+                                reg = <4>;
+                                regulator-min-microvolt = <1140000>;
+                                regulator-max-microvolt = <1320000>;
+                                regulator-always-on;
+                                regulator-boot-on;
+                        };
+                };
+
+        };