On Wed, 21 Jun 2017 16:30:14 +0200 Fabrice Gasnier <[email protected]> wrote:
> Add documentation for STMicroelectronics STM32 Low-Power Timer > quadrature encoder and counter binding. > > Signed-off-by: Fabrice Gasnier <[email protected]> Acked-by: Jonathan Cameron <[email protected]> > --- > Changes in v2: > - s/Low Power/Low-Power > - remove leading 0x in example (parent node) > - improve properties descriptions > --- > .../bindings/iio/counter/stm32-lptimer-cnt.txt | 27 > ++++++++++++++++++++++ > 1 file changed, 27 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt > > diff --git > a/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt > b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt > new file mode 100644 > index 0000000..b9fd014 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/counter/stm32-lptimer-cnt.txt > @@ -0,0 +1,27 @@ > +STMicroelectronics STM32 Low-Power Timer quadrature encoder and counter > + > +STM32 Low-Power Timer provides several counter modes. It can be used as: > +- quadrature encoder to detect angular position and direction of rotary > + elements, from IN1 and IN2 input signals. > +- simple counter from IN1 input signal. > + > +Must be a sub-node of an STM32 Low-Power Timer device tree node. > +See ../mfd/stm32-lptimer.txt for details about the parent node. > + > +Required properties: > +- compatible: Must be "st,stm32-lptimer-counter". > +- pinctrl-names: Set to "default". > +- pinctrl-0: List of phandles pointing to pin configuration > nodes, > + to set IN1/IN2 pins in mode of operation for Low-Power > + Timer input on external pin. > + > +Example: > + lptimer1: lptimer@40002400 { > + compatible = "st,stm32-lptimer"; > + ... > + counter { > + compatible = "st,stm32-lptimer-counter"; > + pinctrl-names = "default"; > + pinctrl-0 = <&lptim1_in_pins>; > + }; > + };
