On Wed, Jun 21, 2017 at 04:30:08PM +0200, Fabrice Gasnier wrote:
> Add documentation for STMicroelectronics STM32 Low-Power Timer binding.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
> ---
> Changes in v2:
> - Lee's comments: s/Low Power/Low-Power/, remove 0x in example, improve
> properties descriptions
> ---
> .../devicetree/bindings/mfd/stm32-lptimer.txt | 48 ++++++++++++++++++++++
> 1 file changed, 48 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/stm32-lptimer.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt
> new file mode 100644
> index 0000000..af859c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt
> @@ -0,0 +1,48 @@
> +STMicroelectronics STM32 Low-Power Timer
> +
> +The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several
> +functions:
> +- PWM output (with programmable prescaler, configurable polarity)
> +- Quadrature encoder, counter
> +- Trigger source for STM32 ADC/DAC (LPTIM_OUT)
> +
> +Required properties:
> +- compatible: Must be "st,stm32-lptimer".
> +- reg: Offset and length of the device's register set.
> +- clocks: Phandle to the clock used by the LP Timer module.
> +- clock-names: Must be "mux".
> +- #address-cells: Should be '<1>'.
> +- #size-cells: Should be '<0>'.
> +
> +Optional subnodes:
> +- pwm: See ../pwm/pwm-stm32-lp.txt
> +- counter: See ../iio/timer/stm32-lptimer-cnt.txt
> +- trigger: See ../iio/timer/stm32-lptimer-trigger.txt
> +
> +Example:
> +
> + lptimer1: lptimer@40002400 {
timer@...
> + compatible = "st,stm32-lptimer";
> + reg = <0x40002400 0x400>;
> + clocks = <&timer_clk>;
> + clock-names = "mux";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + pwm {
> + compatible = "st,stm32-pwm-lp";
> + pinctrl-names = "default";
> + pinctrl-0 = <&lppwm1_pins>;
> + };
> +
> + trigger@0 {
> + compatible = "st,stm32-lptimer-trigger";
> + reg = <0>;
Is there more than 1?
> + };
> +
> + counter {
> + compatible = "st,stm32-lptimer-counter";
> + pinctrl-names = "default";
> + pinctrl-0 = <&lptim1_in_pins>;
> + };
> + };
> --
> 1.9.1
>
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