Kernel-4.18.0-80.el8_stm32-lptimer

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>;
    };
};