STMicroelectronics STM32 Low-Power Timer
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The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several
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functions:
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- PWM output (with programmable prescaler, configurable polarity)
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- Quadrature encoder, counter
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- Trigger source for STM32 ADC/DAC (LPTIM_OUT)
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Required properties:
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- compatible: Must be "st,stm32-lptimer".
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- reg: Offset and length of the device's register set.
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- clocks: Phandle to the clock used by the LP Timer module.
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- clock-names: Must be "mux".
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- #address-cells: Should be '<1>'.
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- #size-cells: Should be '<0>'.
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Optional subnodes:
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- pwm: See ../pwm/pwm-stm32-lp.txt
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- counter: See ../iio/timer/stm32-lptimer-cnt.txt
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- trigger: See ../iio/timer/stm32-lptimer-trigger.txt
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Example:
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timer@40002400 {
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compatible = "st,stm32-lptimer";
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reg = <0x40002400 0x400>;
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clocks = <&timer_clk>;
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clock-names = "mux";
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#address-cells = <1>;
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#size-cells = <0>;
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pwm {
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compatible = "st,stm32-pwm-lp";
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pinctrl-names = "default";
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pinctrl-0 = <&lppwm1_pins>;
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};
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trigger@0 {
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compatible = "st,stm32-lptimer-trigger";
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reg = <0>;
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};
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counter {
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compatible = "st,stm32-lptimer-counter";
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pinctrl-names = "default";
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pinctrl-0 = <&lptim1_in_pins>;
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};
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};
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