diff options
Diffstat (limited to 'dts/Bindings/regulator/pwm-regulator.txt')
| -rw-r--r-- | dts/Bindings/regulator/pwm-regulator.txt | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/dts/Bindings/regulator/pwm-regulator.txt b/dts/Bindings/regulator/pwm-regulator.txt index ed936f0f34..3aeba9f86e 100644 --- a/dts/Bindings/regulator/pwm-regulator.txt +++ b/dts/Bindings/regulator/pwm-regulator.txt @@ -34,20 +34,44 @@ Only required for Voltage Table Mode: First cell is voltage in microvolts (uV) Second cell is duty-cycle in percent (%) +Optional properties for Continuous mode: +- pwm-dutycycle-unit: Integer value encoding the duty cycle unit. If not + defined, <100> is assumed, meaning that + pwm-dutycycle-range contains values expressed in + percent. + +- pwm-dutycycle-range: Should contain 2 entries. The first entry is encoding + the dutycycle for regulator-min-microvolt and the + second one the dutycycle for regulator-max-microvolt. + Duty cycle values are expressed in pwm-dutycycle-unit. + If not defined, <0 100> is assumed. + NB: To be clear, if voltage-table is provided, then the device will be used in Voltage Table Mode. If no voltage-table is provided, then the device will be used in Continuous Voltage Mode. +Optional properties: +-------------------- +- enable-gpios: GPIO to use to enable/disable the regulator + Any property defined as part of the core regulator binding can also be used. (See: ../regulator/regulator.txt) -Continuous Voltage Example: +Continuous Voltage With Enable GPIO Example: pwm_regulator { compatible = "pwm-regulator; pwms = <&pwm1 0 8448 0>; + enable-gpios = <&gpio0 23 GPIO_ACTIVE_HIGH>; regulator-min-microvolt = <1016000>; regulator-max-microvolt = <1114000>; regulator-name = "vdd_logic"; + /* unit == per-mille */ + pwm-dutycycle-unit = <1000>; + /* + * Inverted PWM logic, and the duty cycle range is limited + * to 30%-70%. + */ + pwm-dutycycle-range <700 300>; /* */ }; Voltage Table Example: |