On Sat, Dec 5, 2020 at 6:34 AM Dmitry Osipenko <[email protected]> wrote:
> Some Atmel touchscreen controllers have a WAKE line that needs to be > asserted low in order to wake up controller from a deep sleep. Document > the wakeup methods and the wake-GPIO properties. > > Signed-off-by: Dmitry Osipenko <[email protected]> Looks really useful! > + atmel,wakeup-method: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: | > + The WAKE line is an active-low input that is used to wake up the touch > + controller from deep-sleep mode before communication with the > controller > + could be started. This feature used to minimize current consumption > + when the controller is in deep sleep mode. > + > + The WAKE pin can be connected in one of the following ways: > + 1) left permanently low > + 2) connected to the I2C-compatible SCL pin > + 3) connected to a GPIO pin on the host > + enum: > + - 0 # ATMEL_MXT_WAKEUP_NONE > + - 1 # ATMEL_MXT_WAKEUP_I2C_SCL > + - 2 # ATMEL_MXT_WAKEUP_GPIO So you can add: minimum: 0 maximum: 2 I suppose? With that: Reviewed-by: Linus Walleij <[email protected]> Yours, Linus Walleij
