Shelley Chen has uploaded this change for review.
mb/google/brox: Disable package c state demotion
This needs to be disabled for RPL otherwise we'll hit the assertion:
[EMERG] ASSERTION ERROR: file 'src/soc/intel/alderlake/fsp_params.c', line 1066
BUG=b:311450057,b:300690448
BRANCH=None
TEST=Tested that we didn't hit this assertion on the device after this
change
Change-Id: Ib7b2484de2d84c980550fd951f1e30efab0ee197
Signed-off-by: Shelley Chen <shchen@google.com>
---
M src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
1 file changed, 4 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/79855/1
diff --git a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
index 23db754..552164a 100644
--- a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
+++ b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
@@ -14,6 +14,10 @@
# S0ix enable
register "s0ix_enable" = "1"
+ # Disable package C state demotion on Raptorlake as a W/A for S0ix issues
+ # seen on J0 and Q0 SKUs
+ register "disable_package_c_state_demotion" = "1"
+
# DPTF enable
register "dptf_enable" = "1"
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