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authorMark Brown <broonie@sirena.org.uk>2013-04-28 02:13:43 +0100
committerMark Brown <broonie@sirena.org.uk>2013-04-28 02:13:43 +0100
commita2c05e91b991179d43e358d5eb9390f57a59a75f (patch)
tree6f33a25e977d47558ea914ddd96be05683f1d366 /Documentation/devicetree
parent2e1be9f7b359d653331876968e68e849857222d3 (diff)
parent71622e15dd4d497447d19317d93292184ceb67d9 (diff)
downloadlinux-a2c05e91b991179d43e358d5eb9390f57a59a75f.tar.gz
Merge remote-tracking branch 'regulator/topic/max8952' into v3.9-rc8
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/regulator/max8952.txt52
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diff --git a/Documentation/devicetree/bindings/regulator/max8952.txt b/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;
+ };