| ON Semiconductor NCP6335d regulator |
| |
| NCP6335d is able to deliver up to 5.0 A, with programmable output voltage from |
| 0.6 V to 1.87 V in 10mV steps, with synchronous rectification and automatic PWM/ |
| PFM transitions, enable pins and power good/fail signaling. |
| |
| The NCP6335d interface is via I2C bus. |
| |
| Required Properties: |
| - compatible: Must be "onnn,ncp6335d-regulator". |
| - reg: The device 8-bit I2C address. |
| - regulator-min-microvolt: Minimum voltage in microvolts supported by this |
| regulator. |
| - regulator-max-microvolt: Maximum voltage in microvolts supported by this |
| regulator. |
| - onnn,min-setpoint: Minimum setpoint voltage in microvolts supported |
| by this regulator. |
| - onnn,step-size: The step size of the regulator, in uV. |
| - onnn,min-slew-ns: Minimum time in ns needed to change voltage by |
| one step size. This value corresponds to DVS |
| mode bit of 00b in command register. |
| - onnn,max-slew-ns: Maximum time in ns needed to change voltage by |
| one step size. This value corresponds to DVS |
| mode bit of 11b in command register. |
| - onnn,vsel: Working vsel register. Supported value are 0 |
| or 1. |
| - onnn,slew-ns: Time in ns needed to change voltage by one step |
| size. Supported value are 333, 666, 1333, 2666. |
| |
| Optional Properties: |
| - onnn,discharge-enable: Present: discharge enabled. |
| Not Present: discharge disabled. |
| - onnn,restore-reg: Present: Restore vsel register from backup register. |
| Not Present: No restore. |
| - onnn,vsel-gpio: Present: GPIO connects to the VSEL pin and set the |
| VSEL pin according to device tree flag. |
| Not Present: No GPIO is connected to vsel pin. |
| - onnn,sleep-enable: Present: Forced in sleep mode when EN and VSEL |
| pins are low. |
| Not Present: Low quiescent current mode when EN and VSEL |
| pins are low. |
| - onnn,tlmm-config: Array of 2 elements to indicate the mask value and the value |
| to write in the masked bits. |
| This property is used to allow the VSEL GPIO to toggle on certain |
| Qualcomm processors. If it is not specified, then no register write is required. |
| The 2 elements with index[0..1] are: |
| [0] => the mask value; |
| [1] => the value to write into the masked bits. |
| - onnn,mode: A string which specifies the initial mode to use for the regulator. |
| Supported values are "pwm" and "auto". PWM mode is more |
| robust, but draws more current than auto mode. If this propery |
| is not specified, then the regulator will be in the hardware default mode. |
| |
| Example: |
| i2c_0 { |
| ncp6335d-regulator@1c { |
| compatible = "onnn,ncp6335d-regulator"; |
| reg = <0x1c>; |
| onnn,vsel = <0>; |
| onnn,slew-rate-ns = <2666>; |
| onnn,discharge-enable; |
| onnn,step-size = <10000>; |
| onnn,min-slew-ns = <333>; |
| onnn,max-slew-ns = <2666>; |
| |
| regulator-min-microvolt = <1050000>; |
| regulator-max-microvolt = <1350000>; |
| onnn,min-setpoint = <600000>; |
| onnn,vsel-gpio = <&msmgpio 2 1>; |
| }; |
| }; |