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141 lines
2.6 KiB
141 lines
2.6 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/mfd/st,stm32-lptimer.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: STMicroelectronics STM32 Low-Power Timers bindings |
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description: | |
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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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- Trigger source for STM32 ADC/DAC (LPTIM_OUT) |
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- Several counter modes: |
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- quadrature encoder to detect angular position and direction of rotary |
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elements, from IN1 and IN2 input signals. |
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- simple counter from IN1 input signal. |
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maintainers: |
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- Fabrice Gasnier <[email protected]> |
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properties: |
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compatible: |
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const: st,stm32-lptimer |
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reg: |
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maxItems: 1 |
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clocks: |
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maxItems: 1 |
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clock-names: |
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items: |
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- const: mux |
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interrupts: |
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maxItems: 1 |
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"#address-cells": |
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const: 1 |
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"#size-cells": |
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const: 0 |
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wakeup-source: true |
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pwm: |
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type: object |
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properties: |
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compatible: |
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const: st,stm32-pwm-lp |
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"#pwm-cells": |
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const: 3 |
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required: |
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- "#pwm-cells" |
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- compatible |
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counter: |
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type: object |
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properties: |
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compatible: |
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const: st,stm32-lptimer-counter |
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required: |
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- compatible |
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timer: |
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type: object |
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properties: |
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compatible: |
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const: st,stm32-lptimer-timer |
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required: |
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- compatible |
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patternProperties: |
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"^trigger@[0-9]+$": |
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type: object |
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properties: |
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compatible: |
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const: st,stm32-lptimer-trigger |
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reg: |
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description: Identify trigger hardware block. |
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items: |
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minimum: 0 |
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maximum: 2 |
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required: |
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- compatible |
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- reg |
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required: |
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- "#address-cells" |
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- "#size-cells" |
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- compatible |
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- reg |
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- clocks |
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- clock-names |
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additionalProperties: false |
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examples: |
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- | |
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#include <dt-bindings/clock/stm32mp1-clks.h> |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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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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interrupts-extended = <&exti 47 IRQ_TYPE_LEVEL_HIGH>; |
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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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#pwm-cells = <3>; |
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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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}; |
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timer { |
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compatible = "st,stm32-lptimer-timer"; |
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}; |
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}; |
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...
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