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Diffstat (limited to 'Documentation/devicetree/bindings/mfd')
| -rw-r--r-- | Documentation/devicetree/bindings/mfd/stm32-lptimer.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt b/Documentation/devicetree/bindings/mfd/stm32-lptimer.txt new file mode 100644 index 000000000000..2a9ff29db9c9 --- /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: + + 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>; + }; + }; |