Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/41425 )
Change subject: [TEST] Helios: Add fan speed control for TSR3 sensor with DPTF settings
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Patch Set 4:
(1 comment)
https://review.coreboot.org/c/coreboot/+/41425/4/src/mainboard/google/hatch/...
File src/mainboard/google/hatch/variants/helios/include/variant/acpi/dptf.asl:
https://review.coreboot.org/c/coreboot/+/41425/4/src/mainboard/google/hatch/...
PS4, Line 93: 100
Thanks everyone for the detailed explanation. […]
Things that can activate the fan: CPU, TSR0, TSR1, TSR2, TSR3 (see DART).
CPU throttling is in DTRT below (TSR3 & TSR0 can both start the throttling; you will need to see the throttling tables (_TSS I believe, but I think that's actually empty so I'm not sure where the throttling values come from...), but is initiated by the _PASSIVE temperatures for Targets (second item) in each DTRT package.
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