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mb/samsung/stumpy: Set initial fan PWM to 30%

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Recent changes to the ITE 8772F SIO code caused the initial fan PWM
to change from 0 to 50%; set it to 30% to reduce fan noise while
still providing some temp control before the OS/ACPI takes over.

TEST=build/boot stumpy to payload, verify fan noise is negligible.

Change-Id: I287e46202ee1c112d1da63c0d8b7889958e3807e
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81514
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Matt DeVillier
2024-03-25 10:14:15 -05:00
committed by Nico Huber
parent b8c451e375
commit b40b6ff53e
1 changed files with 1 additions and 0 deletions
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src/mainboard/samsung/stumpy/devicetree.cb
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@@ -91,6 +91,7 @@ chip northbridge/intel/sandybridge
register "TMPIN3.mode" = "THERMAL_PECI"
# Enable FAN3
register "FAN3.mode" = "FAN_SMART_SOFTWARE"
register "FAN3.smart.pwm_start" = "30"
device pnp 2e.0 off end # FDC
device pnp 2e.1 on # Serial Port 1