# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/mfd/st,stm32-timers.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: STMicroelectronics STM32 Timers bindings description: | This hardware block provides 3 types of timer along with PWM functionality: - advanced-control timers consist of a 16-bit auto-reload counter driven by a programmable prescaler, break input feature, PWM outputs and complementary PWM outputs channels. - general-purpose timers consist of a 16-bit or 32-bit auto-reload counter driven by a programmable prescaler and PWM outputs. - basic timers consist of a 16-bit auto-reload counter driven by a programmable prescaler. maintainers: - Benjamin Gaignard <benjamin.gaignard@st.com> - Fabrice Gasnier <fabrice.gasnier@st.com> properties: compatible: const: st,stm32-timers reg: maxItems: 1 clocks: maxItems: 1 clock-names: items: - const: int reset: maxItems: 1 dmas: minItems: 1 maxItems: 7 dma-names: items: enum: [ ch1, ch2, ch3, ch4, up, trig, com ] minItems: 1 maxItems: 7 "#address-cells": const: 1 "#size-cells": const: 0 pwm: type: object properties: compatible: const: st,stm32-pwm "#pwm-cells": const: 3 st,breakinput: description: One or two <index level filter> to describe break input configurations. $ref: /schemas/types.yaml#/definitions/uint32-matrix items: items: - description: | "index" indicates on which break input (0 or 1) the configuration should be applied. enum: [0, 1] - description: | "level" gives the active level (0=low or 1=high) of the input signal for this configuration enum: [0, 1] - description: | "filter" gives the filtering value (up to 15) to be applied. maximum: 15 minItems: 1 maxItems: 2 required: - "#pwm-cells" - compatible patternProperties: "^timer@[0-9]+$": type: object properties: compatible: enum: - st,stm32-timer-trigger - st,stm32h7-timer-trigger reg: description: Identify trigger hardware block. items: minimum: 0 maximum: 16 required: - compatible - reg counter: type: object properties: compatible: const: st,stm32-timer-counter required: - compatible required: - compatible - reg - clocks - clock-names additionalProperties: false examples: - | #include <dt-bindings/clock/stm32mp1-clks.h> timers2: timer@40000000 { #address-cells = <1>; #size-cells = <0>; compatible = "st,stm32-timers"; reg = <0x40000000 0x400>; clocks = <&rcc TIM2_K>; clock-names = "int"; dmas = <&dmamux1 18 0x400 0x1>, <&dmamux1 19 0x400 0x1>, <&dmamux1 20 0x400 0x1>, <&dmamux1 21 0x400 0x1>, <&dmamux1 22 0x400 0x1>; dma-names = "ch1", "ch2", "ch3", "ch4", "up"; pwm { compatible = "st,stm32-pwm"; #pwm-cells = <3>; st,breakinput = <0 1 5>; }; timer@1 { compatible = "st,stm32-timer-trigger"; reg = <1>; }; counter { compatible = "st,stm32-timer-counter"; }; }; ...