aboutsummaryrefslogtreecommitdiff
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorTomasz Figa <t.figa@samsung.com>2013-04-04 18:17:20 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-04-05 11:20:52 +0100
commit3ff4aa95b3cd960a1c2e1422bc3dbd604f88271b (patch)
tree49386cec88cdb492559b345d82eaf483ffb55341 /Documentation/devicetree
parent3ec6eb9cc2dbfa5b626f813ab8077eb71da60af2 (diff)
downloadlinux-3ff4aa95b3cd960a1c2e1422bc3dbd604f88271b.tar.gz
regulator: max8952: Add Device Tree support
This patch adds Device Tree support to max8952 regulator driver. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/regulator/max8952.txt52
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/max8952.txt b/Documentation/devicetree/bindings/regulator/max8952.txt
new file mode 100644
index 00000000000..866fcdd0f4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/max8952.txt
@@ -0,0 +1,52 @@
+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;
+ };