mb/google/beltino: Set initial fan PWM to 30%
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 google/beltino to payload, verify fan noise is
negligible.
Change-Id: I0177235d73e051f02b5333cf1d735556382b919f
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81513
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/beltino/devicetree.cb b/src/mainboard/google/beltino/devicetree.cb
index d96ee11..9dacd6d 100644
--- a/src/mainboard/google/beltino/devicetree.cb
+++ b/src/mainboard/google/beltino/devicetree.cb
@@ -84,6 +84,7 @@
register "TMPIN3.mode" = "THERMAL_PECI"
# Enable FAN2
register "FAN2.mode" = "FAN_SMART_SOFTWARE"
+ register "FAN2.smart.pwm_start" = "30"
device pnp 2e.0 off end # FDC
device pnp 2e.1 on # Serial Port 1