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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:
timer@40002400 {
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>;
};
counter {
compatible = "st,stm32-lptimer-counter";
pinctrl-names = "default";
pinctrl-0 = <&lptim1_in_pins>;
};
};
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