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| author | Mate Kukri <kukri.mate@gmail.com> | 2024-04-23 18:04:38 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2024-04-24 17:42:40 +0000 |
| commit | 75dd80649925a5a30486a40068b7bb287c07b167 (patch) | |
| tree | b0f988cd57edecef37d2dcbcda46e3312fa2f631 /src/arch/x86/acpi_s3.c | |
| parent | 51e472d568339fd76222933b16b88ddafaa8177b (diff) | |
mb/dell/optiplex_9020: Implement late HWM initialization
There are 4 different chassis types specified by vendor firmware, each
with a slightly different HWM configuration.
The chassis type to use is determined at runtime by reading a set of
4 PCH GPIOs: 70, 38, 17, and 1.
Additionally vendor firmware also provides an option to run the fans at
full speed. This is substituted with a coreboot nvram option in this
implementation.
This was tested to make fan control work on my OptiPlex 7020 SFF.
NOTE: This is superficially similar to the OptiPlex 9010's SCH5545
however the OptiPlex 9020's SCH5555 does not use externally
programmed EC firmware.
Change-Id: Ibdccd3fc7364e03e84ca606592928410624eed43
Signed-off-by: Mate Kukri <kukri.mate@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81529
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/arch/x86/acpi_s3.c')
0 files changed, 0 insertions, 0 deletions