commit	2ce34725e388c49498e0cd3a2c1d33d91c42b091	[log] [tgz]
author	Terry Cheong <htcheong@chromium.org>	Tue Dec 12 11:04:33 2023 +0800
committer	Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com>	Wed Jan 24 04:33:49 2024 +0000
tree	ee92d24d6e62bf36544bca52b11df58fe0408923
parent	7706968e99d76ac73f9c2fcd41992b25f677e0f2 [diff]

UPSTREAM: mb/google: Reduce DA7219 mic detect threshold to 200ohm

The original DA7219 is designed to use a 500ohm mic detection
threshold. Some headset mics (e.g. Logitech H111) have a lower DC impedance that is lower than the threshold and thus cannot be
detected. Lower the threshold to 200ohm to match the new default
value provided by Renasas as in https://patchwork.kernel.org/project/alsa-devel/patch/20231201042933.26392-1-David.Rau.opensource@dm.renesas.com/ to support such headsets.

BUG=b:314062160,b:308207450

(cherry picked from commit 053c901548b751dd10eeae5e0afae8359290bede)

Original-Change-Id: I6415e84a4622e0c61bc74b94536fe734048a043f
Original-Signed-off-by: Terry Cheong <htcheong@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/c/coreboot/+/79436
Original-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Original-Reviewed-by: Eric Lai <ericllai@google.com>
Original-Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Original-Reviewed-by: Subrata Banik <subratabanik@google.com>
GitOrigin-RevId: 053c901548b751dd10eeae5e0afae8359290bede
Change-Id: If3e0ddb19295c95fb1cdd191c89cb7b80e22ff80
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/5125981
Reviewed-by: Subrata Banik <subratabanik@chromium.org>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Tested-by: Subrata Banik <subratabanik@chromium.org>
Commit-Queue: Subrata Banik <subratabanik@chromium.org>
(cherry picked from commit ae22be8b9344d6351d432842df341d248b972da2)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/5232338
Commit-Queue: Terry Cheong <htcheong@chromium.org>
Tested-by: Terry Cheong <htcheong@chromium.org>
Reviewed-by: Shou-Chieh Hsu <shouchieh@chromium.org>

21 files changed

tree: ee92d24d6e62bf36544bca52b11df58fe0408923

README.md

coreboot README

coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload.

With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required.

coreboot was formerly known as LinuxBIOS.

Payloads

After the basic initialization of the hardware has been performed, any desired “payload” can be started by coreboot.

See https://www.coreboot.org/Payloads for a list of supported payloads.

Supported Hardware

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

Build Requirements

make
gcc / g++ Because Linux distribution compilers tend to use lots of patches. coreboot does lots of “unusual” things in its build system, some of which break due to those patches, sometimes by gcc aborting, sometimes - and that‘s worse - by generating broken object code. Two options: use our toolchain (eg. make crosstools-i386) or enable the ANY_TOOLCHAIN Kconfig option if you’re feeling lucky (no support in this case).
iasl (for targets with ACPI support)
pkg-config
libssl-dev (openssl)

Optional:

doxygen (for generating/viewing documentation)
gdb (for better debugging facilities on some targets)
ncurses (for make menuconfig and make nconfig)
flex and bison (for regenerating parsers)

Building coreboot

Please consult https://www.coreboot.org/Build_HOWTO for details.

Testing coreboot Without Modifying Your Hardware

If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU.

Please see https://www.coreboot.org/QEMU for details.

Website and Mailing List

Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:

https://www.coreboot.org

You can contact us directly on the coreboot mailing list:

https://www.coreboot.org/Mailinglist

Copyright and License

The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.

coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the “GPL (version 2, or any later version)”, and some files are licensed under the “GPL, version 2”. For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.

This makes the resulting coreboot images licensed under the GPL, version 2.