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| author | Tomasz Figa <t.figa@samsung.com> | 2013-04-04 18:17:20 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-04-05 11:20:52 +0100 |
| commit | 3ff4aa95b3cd960a1c2e1422bc3dbd604f88271b (patch) | |
| tree | 49386cec88cdb492559b345d82eaf483ffb55341 /Documentation/devicetree | |
| parent | 3ec6eb9cc2dbfa5b626f813ab8077eb71da60af2 (diff) | |
| download | talos-obmc-linux-3ff4aa95b3cd960a1c2e1422bc3dbd604f88271b.tar.gz talos-obmc-linux-3ff4aa95b3cd960a1c2e1422bc3dbd604f88271b.zip | |
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.txt | 52 |
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 000000000000..866fcdd0f4eb --- /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; + }; |
