commit | 888af331fe94a15870ae29c2e6a38880ccba71ee | [log] [tgz] |
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author | kane_chen <kane_chen@pegatron.corp-partner.google.com> | Fri Sep 14 10:02:18 2018 +0800 |
committer | Patrick Georgi <pgeorgi@google.com> | Wed Oct 24 09:57:21 2018 +0000 |
tree | 610c56a1a5e5d51bceab1f34e3e1a7ab29fc46ff | |
parent | 1d93b88af2de9dd3af45ebaffcac4344baaf3d40 [diff] |
mainboard/google/poppy/variants/rammus: Enable touchscreen On rammus, set GPIO GPP_C22 to 1 for touchscreen power on. And add touchscreen device "PNP0C50" to I2C0. According to touchscreen spec, device power on initialization takes 105 ms, so set "generic.enable_delay_ms" to 120. We found there is i2c error log pop up when we set delay time to be 110ms or 105ms. If we set delay time to be 120ms. System will not pop up i2c error log. BUG=b:115944726 BRANCH=master TEST=emerge-rammus coreboot chromeos-ec chromeos-bootimage Flash FW to DUT, and make sure touchscreen works. Change-Id: Ibce552d04991e85c99ae3a0a92455fc747d9fced Signed-off-by: YanRu Chen <kane_chen@pegatron.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/28598 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Zhuohao Lee <zhuohao@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
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.
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.
coreboot supports a wide range of chipsets, devices, and mainboards.
For details please consult:
ANY_TOOLCHAIN
Kconfig option if you're feeling lucky (no support in this case).Optional:
make menuconfig
and make nconfig
)Please consult https://www.coreboot.org/Build_HOWTO for details.
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.
Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website:
You can contact us directly on the coreboot mailing list:
https://www.coreboot.org/Mailinglist
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.