diff options
Diffstat (limited to 'dts/Bindings/regulator/gpio-regulator.txt')
| -rw-r--r-- | dts/Bindings/regulator/gpio-regulator.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/dts/Bindings/regulator/gpio-regulator.txt b/dts/Bindings/regulator/gpio-regulator.txt new file mode 100644 index 0000000000..e5cac1e0ca --- /dev/null +++ b/dts/Bindings/regulator/gpio-regulator.txt @@ -0,0 +1,41 @@ +GPIO controlled regulators + +Required properties: +- compatible : Must be "regulator-gpio". +- states : Selection of available voltages and GPIO configs. + if there are no states, then use a fixed regulator + +Optional properties: +- enable-gpio : GPIO to use to enable/disable the regulator. +- gpios : GPIO group used to control voltage. +- gpios-states : gpios pin's initial states array. 0: LOW, 1: HIGH. + defualt is LOW if nothing is specified. +- startup-delay-us : Startup time in microseconds. +- enable-active-high : Polarity of GPIO is active high (default is low). +- regulator-type : Specifies what is being regulated, must be either + "voltage" or "current", defaults to current. + +Any property defined as part of the core regulator binding defined in +regulator.txt can also be used. + +Example: + + mmciv: gpio-regulator { + compatible = "regulator-gpio"; + + regulator-name = "mmci-gpio-supply"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2600000>; + regulator-boot-on; + + enable-gpio = <&gpio0 23 0x4>; + gpios = <&gpio0 24 0x4 + &gpio0 25 0x4>; + states = <1800000 0x3 + 2200000 0x2 + 2600000 0x1 + 2900000 0x0>; + + startup-delay-us = <100000>; + enable-active-high; + }; |