Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / regulator / max8952.txt

diff --git a/kernel/Documentation/devicetree/bindings/regulator/max8952.txt b/kernel/Documentation/devicetree/bindings/regulator/max8952.txt
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+Maxim MAX8952 voltage regulator
+
+Required properties:
+- compatible: must be equal to "maxim,max8952"
+- reg: I2C slave address, usually 0x60
+- max8952,dvs-mode-microvolt: array of 4 integer values defining DVS voltages
+  in microvolts. All values must be from range <770000, 1400000>
+- any required generic properties defined in regulator.txt
+
+Optional properties:
+- max8952,vid-gpios: array of two GPIO pins used for DVS voltage selection
+- max8952,en-gpio: GPIO used to control enable status of regulator
+- max8952,default-mode: index of default DVS voltage, from <0, 3> range
+- max8952,sync-freq: sync frequency, must be one of following values:
+    - 0: 26 MHz
+    - 1: 13 MHz
+    - 2: 19.2 MHz
+  Defaults to 26 MHz if not specified.
+- max8952,ramp-speed: voltage ramp speed, must be one of following values:
+    - 0: 32mV/us
+    - 1: 16mV/us
+    - 2: 8mV/us
+    - 3: 4mV/us
+    - 4: 2mV/us
+    - 5: 1mV/us
+    - 6: 0.5mV/us
+    - 7: 0.25mV/us
+  Defaults to 32mV/us if not specified.
+- any available generic properties defined in regulator.txt
+
+Example:
+
+       vdd_arm_reg: pmic@60 {
+               compatible = "maxim,max8952";
+               reg = <0x60>;
+
+               /* max8952-specific properties */
+               max8952,vid-gpios = <&gpx0 3 0>, <&gpx0 4 0>;
+               max8952,en-gpio = <&gpx0 1 0>;
+               max8952,default-mode = <0>;
+               max8952,dvs-mode-microvolt = <1250000>, <1200000>,
+                                               <1050000>, <950000>;
+               max8952,sync-freq = <0>;
+               max8952,ramp-speed = <0>;
+
+               /* generic regulator properties */
+               regulator-name = "vdd_arm";
+               regulator-min-microvolt = <770000>;
+               regulator-max-microvolt = <1400000>;
+               regulator-always-on;
+               regulator-boot-on;
+       };