Nico Huber has submitted this change. ( https://review.coreboot.org/c/coreboot/+/81514?usp=email )
Change subject: mb/samsung/stumpy: Set initial fan PWM to 30% ......................................................................
mb/samsung/stumpy: 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 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 --- M src/mainboard/samsung/stumpy/devicetree.cb 1 file changed, 1 insertion(+), 0 deletions(-)
Approvals: Varshit Pandya: Looks good to me, but someone else must approve build bot (Jenkins): Verified Nico Huber: Looks good to me, approved
diff --git a/src/mainboard/samsung/stumpy/devicetree.cb b/src/mainboard/samsung/stumpy/devicetree.cb index 853e519..bc24464 100644 --- a/src/mainboard/samsung/stumpy/devicetree.cb +++ b/src/mainboard/samsung/stumpy/devicetree.cb @@ -91,6 +91,7 @@ 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