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mb/google/fatcat: Modifying parameters for AC only

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In the "AC only" scenario, since the adapter is 65W,
the values of PL2 and PL4 need to be reduced to prevent
the machine from shutting down.

BUG=b:487170924
TEST=emerge-fatcat coreboot, test pass by power engineer

Change-Id: Id0b1f886205f26a5171f21ae43a9360791e0979b
Signed-off-by: WeiHuaLin <weihualin@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91646
Reviewed-by: Weimin Wu <wuweimin@huaqin.corp-partner.google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
WeiHuaLin 2026-03-11 11:01:59 +08:00 • committed by Jérémy Compostella
commit a7773d3ab3
1 changed files with 15 additions and 3 deletions
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18
src/mainboard/google/fatcat/variants/baseboard/fatcat/ramstage.c
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@ -18,9 +18,9 @@
#define COMMON_PTL_U_POWER_LIMITS \
.pl1_min_power = 10000, \
.pl1_max_power = 15000, \
.pl2_min_power = 50000, \
.pl2_max_power = 50000, \
.pl4_power = 65000
.pl2_min_power = 25000, \
.pl2_max_power = 25000, \
.pl4_power = 25000
const struct cpu_tdp_power_limits power_optimized_limits[] = {
{
.mch_id = PCI_DID_INTEL_PTL_H_ID_1,
@ -88,6 +88,18 @@ const struct cpu_tdp_power_limits power_optimized_limits[] = {
.power_limits_index = PTL_CORE_2,
COMMON_PTL_U_POWER_LIMITS
},
{
.mch_id = PCI_DID_INTEL_PTL_U_ID_1,
.cpu_tdp = TDP_25W,
.power_limits_index = PTL_CORE_1,
COMMON_PTL_U_POWER_LIMITS
},
{
.mch_id = PCI_DID_INTEL_PTL_U_ID_2,
.cpu_tdp = TDP_25W,
.power_limits_index = PTL_CORE_2,
COMMON_PTL_U_POWER_LIMITS
},
};
/*