On Wed, 21 Jun 2017 16:30:14 +0200
Fabrice Gasnier <fabrice.gasnier@xxxxxx> wrote:
> Add documentation for STMicroelectronics STM32 Low-Power Timer
> quadrature encoder and counter binding.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx>
> ---
> 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>;
> + };
> + };
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