3 files changed, 63 insertions, 0 deletions
diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index e781f08597..c162a44473 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -238,4 +238,17 @@ config USE_PM_ACPI_TIMER
 config HAVE_SLP_S0_GATE
 	def_bool n
 
+choice
+	prompt "Choose desired processor power limits (PLs)"
+	default PL_BASELINE if BOARD_GOOGLE_MODEL_SCREEBO
+	default PL_PERFORMANCE
+
+config PL_PERFORMANCE
+	bool "Performance: Maximum PLs for maximum performance"
+
+config PL_BASELINE
+	bool "Baseline: Baseline PLs for balanced performance at lower power"
+
+endchoice
+
 endif # BOARD_GOOGLE_REX_COMMON
diff --git a/src/mainboard/google/rex/variants/baseboard/rex/ramstage.c b/src/mainboard/google/rex/variants/baseboard/rex/ramstage.c
index d2adaaee52..02bdca5d01 100644
--- a/src/mainboard/google/rex/variants/baseboard/rex/ramstage.c
+++ b/src/mainboard/google/rex/variants/baseboard/rex/ramstage.c
@@ -10,6 +10,7 @@
  * pl2_min (milliWatts), pl2_max (milliWatts), pl4 (milliWatts)
  * Following values are for performance config as per document #640982
  */
+#if CONFIG(PL_PERFORMANCE)
 const struct cpu_tdp_power_limits performance_efficient_limits[] = {
 	{
 		.mch_id = PCI_DID_INTEL_MTL_P_ID_2,
@@ -51,6 +52,49 @@ const struct cpu_tdp_power_limits power_optimized_limits[] = {
 		.pl4_power = 64000
 	},
 };
+#else
+const struct cpu_tdp_power_limits performance_efficient_limits[] = {
+	{
+		.mch_id = PCI_DID_INTEL_MTL_P_ID_2,
+		.cpu_tdp = 15,
+		.pl1_min_power = 10000,
+		.pl1_max_power = 15000,
+		.pl2_min_power = 40000,
+		.pl2_max_power = 40000,
+		.pl4_power = 84000
+	},
+	{
+		.mch_id = PCI_DID_INTEL_MTL_P_ID_5,
+		.cpu_tdp = 15,
+		.pl1_min_power = 10000,
+		.pl1_max_power = 15000,
+		.pl2_min_power = 40000,
+		.pl2_max_power = 40000,
+		.pl4_power = 84000
+	},
+};
+
+const struct cpu_tdp_power_limits power_optimized_limits[] = {
+	{
+		.mch_id = PCI_DID_INTEL_MTL_P_ID_2,
+		.cpu_tdp = 15,
+		.pl1_min_power = 10000,
+		.pl1_max_power = 15000,
+		.pl2_min_power = 40000,
+		.pl2_max_power = 40000,
+		.pl4_power = 47000
+	},
+	{
+		.mch_id = PCI_DID_INTEL_MTL_P_ID_5,
+		.cpu_tdp = 15,
+		.pl1_min_power = 10000,
+		.pl1_max_power = 15000,
+		.pl2_min_power = 40000,
+		.pl2_max_power = 40000,
+		.pl4_power = 47000
+	},
+};
+#endif
 
 void variant_devtree_update(void)
 {
diff --git a/src/mainboard/google/rex/variants/screebo/overridetree.cb b/src/mainboard/google/rex/variants/screebo/overridetree.cb
index 06f7b9bcea..0d69aca25a 100644
--- a/src/mainboard/google/rex/variants/screebo/overridetree.cb
+++ b/src/mainboard/google/rex/variants/screebo/overridetree.cb
@@ -34,6 +34,12 @@ end
 
 chip soc/intel/meteorlake
 
+	register "power_limits_config[MTL_P_282_242_CORE]" = "{
+		.tdp_pl1_override = 15,
+		.tdp_pl2_override = 40,
+		.tdp_pl4 = 84,
+	}"
+
 	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC1)"	# USB2_C1
 	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C0
 	register "usb2_ports[2]" = "USB2_PORT_MID(OC2)"	# Type-A Port A1