commit | 04e8c2b5ff85e246d6f711f58cc54b0e2ba91841 | [log] [tgz] |
---|---|---|
author | Varshit B Pandya <varshit.b.pandya@intel.com> | Wed Oct 27 10:41:32 2021 +0530 |
committer | Felix Held <felix-coreboot@felixheld.de> | Fri Nov 19 14:53:06 2021 +0000 |
tree | 0dc471ac6b2873aadb8b0dd0e34b12c5b69944cb | |
parent | 423e9e0fc0c6c20df32683be816368cb68374c05 [diff] |
driver/intel/mipi_camera: Add support for _DSC field The _DSC (Device State for Configuration) object evaluates to an integer may be used to tell Linux the highest allowed D state for a device during probe. The support for _DSC requires support from the kernel bus type if the bus driver normally sets the device in D0 state for probe. The D states and thus also the allowed values for _DSC are listed below. Number State Description 0 D0 Device fully powered on 1 D1 2 D2 3 D3hot 4 D3cold Off More details can be found here https://lkml.org/lkml/2021/10/25/397 BUG=none BRANCH=none TEST=Add corresponding field in brya, boot and dump SSDT to check if _DSC field is as per expectation. Name (_ADR, Zero) // _ADR: Address Name (_HID, "OVTI8856") // _HID: Hardware ID Name (_UID, Zero) // _UID: Unique ID Name (_DDN, "Ov 8856 Camera") // _DDN: DOS Device Name Method (_STA, 0, NotSerialized) // _STA: Status { Return (0x0F) } Method (_DSC, 0, NotSerialized) { Return (0x04) } Signed-off-by: Varshit B Pandya <varshit.b.pandya@intel.com> Change-Id: I5471f144918413a2982f86beaf3dbf7e4e66cc9b Reviewed-on: https://review.coreboot.org/c/coreboot/+/58767 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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.