zephyr/dts/bindings/timer/renesas,rx-timer-cmt.yaml
Duy Nguyen ad42e4d87d driver: timer: Support for RX system timer
This commit add a system timer driver for Renesas RX using the
CMT peripheral. The driver supports both system ticks and
high-resolution cycle counting
- Configures CMT0 as the system tick timer
- Configures CMT1 as a free-running cycle timer for precise
  time tracking
- Handles timer overflows to maintain a continuous cycle count.
- Implements sys_clock_cycle_get_32() and sys_clock_cycle_get_64()
  for  high-resolution timing
- Supports Zephyr tickless kernel mode by tracking elapsed cycles
- Enables interrupt-based tick announcement using CMT0

Signed-off-by: Duy Nguyen <duy.nguyen.xa@renesas.com>
Signed-off-by: Yuichi Nakada <yuichi.nakada.sx@renesas.com>
2025-05-02 09:18:16 +02:00

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YAML

# Copyright (c) 2021 KT-Elektronik, Klaucke und Partner GmbH
# Copyright (c) 2024 Renesas Electronics Corporation
# SPDX-License-Identifier: Apache-2.0
description: Renesas RX timer node
compatible: "renesas,rx-timer-cmt"
include: base.yaml
properties:
reg:
required: true