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Jenny TC 0a754021cf intel/strago: BCRD2: Enable Realtek Audio codec on I2C4
In BCRD2, RTEK audio codec is connected to I2C4.
Create a RTEK device entry on I2C4 to enable Audio
on BCRD2. In BCRD1, RTEK device is connected to I2C2.
Having two devices with same HID breaks the Audio
on BCRD2 even if I2C2.RTEK._STA returns 0. The Audio
codec driver in kernel is hard coded to use first
instance of the device (:00). When two devices are present
with same HID, first device gets an instance number :00
even though _STA returns 0. Second device which is on I2C4
and POR for BCRD2 assigned with instance number :01. The
device with :01 is not getting enabled since the Audio codec
driver supports only :00. This need a proper fix in kernel
which is in the pipeline. Audio on non BCRD2 platforms on
Strago build would be disabled since RTEK device is not present
on I2C2.

BRANCH=None
BUG=None
TEST=Build and boot the system

Change-Id: Ia97d011c951275e6179c8b79a22c496b8169356b
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d71a41ee703e6f60299b9e31a408af2ca06d8e24
Original-Change-Id: I4b032e930e46da77474f8f5969e95f9560b3e905
Original-Signed-off-by: Jenny TC <jenny.tc@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/285193
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Divagar Mohandass <divagar.mohandass@intel.com>
Reviewed-on: http://review.coreboot.org/11003
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-07-23 16:33:09 +02:00
3rdparty vboot: Don't count boot attempts if lid is closed 2015-07-08 19:40:24 +02:00
Documentation Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
payloads libpayload: lz4: Add output overrun check to incompressible case 2015-07-21 21:27:42 +02:00
src intel/strago: BCRD2: Enable Realtek Audio codec on I2C4 2015-07-23 16:33:09 +02:00
util crossgcc: Support /bin/sh pointing to dash 2015-07-22 01:44:54 +02:00
.gitignore version: allow stating the coreboot revision in .coreboot-version 2015-07-13 21:00:59 +02:00
.gitmodules submodules: add arm-trusted-firmware third-party repository 2015-06-23 08:20:24 +02:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
MAINTAINERS MAINTAINERS: grab build system responsibility 2015-05-22 22:47:03 +02:00
Makefile Makefile: Fix KCONFIG_AUTOHEADER dependencies 2015-07-18 09:41:31 +02:00
Makefile.inc cbfstool: fix alignment to 64 byte 2015-07-15 16:34:30 +02:00
README Update README with newer version of the text from the web page 2011-06-15 10:16:33 +02:00
toolchain.inc toolchain: Add -mgeneral-regs-only to CFLAGS for arm64 2015-07-16 22:35:50 +02:00

README

-------------------------------------------------------------------------------
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 http://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:

 * http://www.coreboot.org/Supported_Motherboards
 * http://www.coreboot.org/Supported_Chipsets_and_Devices


Build Requirements
------------------

 * gcc / g++
 * make

Optional:

 * doxygen (for generating/viewing documentation)
 * iasl (for targets with ACPI support)
 * gdb (for better debugging facilities on some targets)
 * ncurses (for 'make menuconfig')
 * flex and bison (for regenerating parsers)


Building coreboot
-----------------

Please consult http://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 http://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:

  http://www.coreboot.org

You can contact us directly on the coreboot mailing list:

  http://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.