| # Copyright 2020 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 "Mute the interal speeker on reboot" |
| author "chromium-os-dev@chromium.org" |
| |
| # There is pop noise from speaker with Codec ALC3254 during warm reboot process. |
| # NB_MUTE pin is controlled by Wilco EC and setting it low will avoid this |
| # noise. This will send Wilco EC MBOX command to mute audio on reboot. |
| start on starting reboot |
| |
| script |
| echo 00 f0 60 00 00 > /sys/kernel/debug/wilco_ec/raw |
| end script |
