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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/timer/arm,armv7m-systick.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: ARMv7M System Timer8 9maintainers:10 - Alexandre Torgue <alexandre.torgue@foss.st.com>11 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>12 13description: ARMv7-M includes a system timer, known as SysTick.14 15properties:16 compatible:17 const: arm,armv7m-systick18 19 reg:20 maxItems: 121 22 clocks:23 maxItems: 124 25 clock-frequency: true26 27oneOf:28 - required:29 - clocks30 - required:31 - clock-frequency32 33required:34 - compatible35 - reg36 37additionalProperties: false38 39examples:40 - |41 timer@e000e010 {42 compatible = "arm,armv7m-systick";43 reg = <0xe000e010 0x10>;44 clocks = <&clk_systick>;45 };46 47 - |48 timer@e000e010 {49 compatible = "arm,armv7m-systick";50 reg = <0xe000e010 0x10>;51 clock-frequency = <90000000>;52 };53 54...55