[S] Change in coreboot[master]: mb/google/skyrim/var/frostflow: Set Package Power Parameters

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/69565 )

Change subject: mb/google/skyrim/var/frostflow: Set Package Power Parameters
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mb/google/skyrim/var/frostflow: Set Package Power Parameters

Set Package Power Parameters from AMD DevHub document #57316.

"stapm_time_constant_s" = "200"

BRANCH=none
BUG=b:257187831
TEST=emerge-skyrim coreboot

Signed-off-by: John Su 
Change-Id: I15a69df1436aba05bc19eaffd79394e5ca9bdb3a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69565
Reviewed-by: Dtrain Hsu 
Reviewed-by: Martin L Roth 
Tested-by: build bot (Jenkins) 
Reviewed-by: Frank Wu 
---
M src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
1 file changed, 26 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Martin L Roth: Looks good to me, approved
  Frank Wu: Looks good to me, approved
  Dtrain Hsu: Looks good to me, but someone else must approve

diff --git a/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb b/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
index a3858c8..5581499 100644
--- a/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
+++ b/src/mainboard/google/skyrim/variants/frostflow/overridetree.cb
@@ -1,6 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0-or-later

chip soc/amd/mendocino
+	# Set Package Power Parameters
+	register "stapm_time_constant_s" = "200"
+
    device domain 0 on
    	device ref gpp_bridge_a on  # Internal GPP Bridge 0 to Bus A
    		device ref xhci_1 on # XHCI1 controller