erebion/coreboot
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mb/google/volteer/variants/drobit: fix power_limits_config

Browse source 
Drobit shows little power usage (around 9W) and very low clock speeds
(1.1GHz - 1.4GHz) under load (`stress -c $(nproc)`), despite being at
temperature too low for thermal throttling (40-50C). It turns out that
power_limits_config is set to the lower end of the dptf power limit
ranges as opposed to baseboard and other variants. This seems to
prevent the device from using the intended power limits.

Tested: Boot and confirm more reasoable power usage (17W) and clock
speeds (around 2.5GHz) as well as good temperatures (topped 85C) and
stability under 100% load (`stress -c $(nproc)` for 30min).
Device for tests is i5-1135G7 and 16GG RAM.

Change-Id: Id0478c713b51db4972e7d93ec597a30fa885c22b
Signed-off-by: Ingo Reitz <9l@9lo.re>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86026
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Ingo Reitz 2025-01-16 22:42:12 +01:00 • committed by Matt DeVillier
commit 74e7b3a0ea
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/mainboard/google/volteer/variants/drobit/overridetree.cb
View file

@ -12,8 +12,8 @@ chip soc/intel/tigerlake
register "tcc_offset" = "8"
register "power_limits_config[POWER_LIMITS_U_4_CORE]" = "{
.tdp_pl1_override = 9,
.tdp_pl2_override = 28,
.tdp_pl1_override = 17,
.tdp_pl2_override = 64,
.tdp_pl4 = 105,
}"