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zephyr/dts/bindings/tach/nuvoton,npcx-tach.yaml

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driver: sensor: npcx: add tachometer sensor support. In NPCX7 series, it contains two tachometer (TACH) modules that contains two Independent timers (counter 1 and 2). They are used to capture a counter value when an event is detected via the external pads (TA or TB). The CL also includes: — Add npcx tachometer device tree declarations. — Zephyr sensor api implementation for tachometer. — Enable "tach1" device in npcx7m6fb.dts for testing. Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
2021-01-12 17:45:06 +08:00
# Copyright (c) 2021 Nuvoton Technology Corporation.
# SPDX-License-Identifier: Apache-2.0
description: Nuvoton, NPCX-Tachometer node
compatible: "nuvoton,npcx-tach"
include: tach.yaml
properties:
reg:
required: true
clocks:
required: true
pinctrl-0:
type: phandles
required: false
description: configurations of pinmux controllers in tachometers
dts: npcx: Fixed the name of nodes in device-tree files. Fixed the name of nodes in device-tree files by following rules: If object is 'phandles', use underscores for object name. If not, such as 'node' or 'property', use hyphens for object name. This CL also applies normal style for all nodes in npcx device-tree files. Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
2021-03-23 14:57:51 +08:00
sample-clk:
driver: sensor: npcx: add tachometer sensor support. In NPCX7 series, it contains two tachometer (TACH) modules that contains two Independent timers (counter 1 and 2). They are used to capture a counter value when an event is detected via the external pads (TA or TB). The CL also includes: — Add npcx tachometer device tree declarations. — Zephyr sensor api implementation for tachometer. — Enable "tach1" device in npcx7m6fb.dts for testing. Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
2021-01-12 17:45:06 +08:00
type: int
required: false
description: |
sampling clock frequency of tachometer. Please notice that it must be
fixed to 32768 if bus in clocks property is NPCX_CLOCK_BUS_LFCLK.
port:
type: int
required: false
description: selected port of tachometer (port-A is 0 and port-B is 1)
dts: npcx: Fixed the name of nodes in device-tree files. Fixed the name of nodes in device-tree files by following rules: If object is 'phandles', use underscores for object name. If not, such as 'node' or 'property', use hyphens for object name. This CL also applies normal style for all nodes in npcx device-tree files. Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
2021-03-23 14:57:51 +08:00
pulses-per-round:
driver: sensor: npcx: add tachometer sensor support. In NPCX7 series, it contains two tachometer (TACH) modules that contains two Independent timers (counter 1 and 2). They are used to capture a counter value when an event is detected via the external pads (TA or TB). The CL also includes: — Add npcx tachometer device tree declarations. — Zephyr sensor api implementation for tachometer. — Enable "tach1" device in npcx7m6fb.dts for testing. Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
2021-01-12 17:45:06 +08:00
type: int
required: false
description: number of pulses (holes) per round of tachometer's input (encoder)