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authorSumeet Pawnikar <sumeet.r.pawnikar@intel.com>2022-03-14 17:13:33 +0530
committerFelix Held <felix-coreboot@felixheld.de>2022-06-10 13:12:45 +0000
commitedbbabcbe7d3f3dd4e636ab7f363b22687c0399e (patch)
tree6e6f0fbc82a83d7315ff49231e2040ba249d3add /src/mainboard/intel/minnow3
parent8d2bfbce23f6ff53cd8014286645a408886549a1 (diff)
ec/google/chromeec: Add support to report fan speed via ACPI
Add fan speed rpm control for DPTF based Active2 policy as per document #626708, by utilizing existing FAN0 variable from src/ec/google/chromeec/acpi/emem.asl#18. There is no corresponding EC change required for this policy support because EC fan code already exporting this rpm value using EC_MEMMAP_FAN for FAN0. BUG=b:224457192 BRANCH=None TEST=Built and booted on ADL-P based Brya system and verify the fan speed in rpm under sysfs path cat /sys/bus/acpi/devices/INTC1048\:00/fan_speed_rpm. Change-Id: Ibb1646b1fb1659fd853ece97d97bb9dee2a3f57e Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/62789 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
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