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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /zephyr/dts/bindings/keyboard/cros-keyscan.yaml
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14345.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
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- # Copyright 2021 The Chromium OS Authors. All rights reserved.
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
-
-description: Keyboard scanning properties
-
-compatible: "cros-keyscan"
-
-properties:
- output-settle:
- type: int
- required: false
- default: 80
- description: |
- Delay time, in microseconds, between setting up output and waiting for
- it to settle. 80 microseconds is the recommended value when column 2
- of the keyboard passes through the Google Security Chip. Otherwise 50
- microseconds is the recommended value.
-
- debounce-down:
- type: int
- required: false
- default: 9000
- description: |
- Time, in microseconds, to debounce key-down.
-
- debounce-up:
- type: int
- required: false
- default: 30000
- description: |
- Time, in microseconds, to debounce key-up.
-
- scan-period:
- type: int
- required: false
- default: 3000
- description: |
- Time between scans when keyboard scan task runs in polling mode.
-
- min-post-scan-delay:
- type: int
- required: false
- default: 1000
- description: |
- Minimum time between end of one scan and start of the next one.
- This ensures keyboard scanning doesn't starve the rest of the system
- if the scan period is set too short, or if other higher-priority
- system activity is starving the keyboard scan task too.
-
- poll-timeout:
- type: int
- required: false
- default: 100000
- description: |
- Revert to interrupt mode after no keyboard activity for this period.
- Specified in microseconds.
-
- actual-key-mask:
- type: array
- required: false
- default: [
- 0x1c, # C0
- 0xff, # C1
- 0xff, # C2
- 0xff, # C3
- 0xff, # C4
- 0xf5, # C5
- 0xff, # C6
- 0xa4, # C7
- 0xfe, # C8
- 0x55, # C9
- 0xfa, # C10
- 0xff, # C11
- 0xca, # C12
- 0x00, # C13 for keypad
- 0x00, # C14 for keypad
- ]
- description: |
- Keyboard scanning mask. For each keyboard column, specify which
- keyboard rows actually exist. Default key mask includes scanning for
- full Chromebook keyboard, excluding the keypad.