| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mfd/st,stm32-lptimer.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: STMicroelectronics STM32 Low-Power Timers |
| |
| description: | |
| The STM32 Low-Power Timer (LPTIM) is a 16-bit timer that provides several |
| functions |
| - PWM output (with programmable prescaler, configurable polarity) |
| - Trigger source for STM32 ADC/DAC (LPTIM_OUT) |
| - Several counter modes: |
| - quadrature encoder to detect angular position and direction of rotary |
| elements, from IN1 and IN2 input signals. |
| - simple counter from IN1 input signal. |
| |
| maintainers: |
| - Fabrice Gasnier <fabrice.gasnier@foss.st.com> |
| |
| properties: |
| compatible: |
| const: st,stm32-lptimer |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| maxItems: 1 |
| |
| clock-names: |
| items: |
| - const: mux |
| |
| interrupts: |
| maxItems: 1 |
| |
| "#address-cells": |
| const: 1 |
| |
| "#size-cells": |
| const: 0 |
| |
| wakeup-source: true |
| |
| access-controllers: |
| minItems: 1 |
| maxItems: 2 |
| |
| pwm: |
| type: object |
| additionalProperties: false |
| |
| properties: |
| compatible: |
| const: st,stm32-pwm-lp |
| |
| "#pwm-cells": |
| const: 3 |
| |
| required: |
| - "#pwm-cells" |
| - compatible |
| |
| counter: |
| type: object |
| additionalProperties: false |
| |
| properties: |
| compatible: |
| const: st,stm32-lptimer-counter |
| |
| required: |
| - compatible |
| |
| timer: |
| type: object |
| additionalProperties: false |
| |
| properties: |
| compatible: |
| const: st,stm32-lptimer-timer |
| |
| required: |
| - compatible |
| |
| patternProperties: |
| "^trigger@[0-9]+$": |
| type: object |
| additionalProperties: false |
| |
| properties: |
| compatible: |
| const: st,stm32-lptimer-trigger |
| |
| reg: |
| description: Identify trigger hardware block. |
| items: |
| minimum: 0 |
| maximum: 2 |
| |
| required: |
| - compatible |
| - reg |
| |
| required: |
| - "#address-cells" |
| - "#size-cells" |
| - compatible |
| - reg |
| - clocks |
| - clock-names |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/clock/stm32mp1-clks.h> |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| timer@40002400 { |
| compatible = "st,stm32-lptimer"; |
| reg = <0x40002400 0x400>; |
| clocks = <&timer_clk>; |
| clock-names = "mux"; |
| interrupts-extended = <&exti 47 IRQ_TYPE_LEVEL_HIGH>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| pwm { |
| compatible = "st,stm32-pwm-lp"; |
| #pwm-cells = <3>; |
| }; |
| |
| trigger@0 { |
| compatible = "st,stm32-lptimer-trigger"; |
| reg = <0>; |
| }; |
| |
| counter { |
| compatible = "st,stm32-lptimer-counter"; |
| }; |
| |
| timer { |
| compatible = "st,stm32-lptimer-timer"; |
| }; |
| }; |
| |
| ... |
