4 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/google/falco/acpi/thermal.asl b/src/mainboard/google/falco/acpi/thermal.asl
index adbc9ec4fb..f9173b78c0 100644
--- a/src/mainboard/google/falco/acpi/thermal.asl
+++ b/src/mainboard/google/falco/acpi/thermal.asl
@@ -21,6 +21,20 @@
 
 Scope (\_TZ)
 {
+	// Handler for throttle requests on this platform
+	//  0 = Stop throttling
+	//  1 = Start throttling
+	Method (THRT, 1, Serialized)
+	{
+		If (LEqual (Arg0, 0)) {
+			/* Disable Power Limit */
+			\_SB.PCI0.MCHC.CTLD ()
+		} Else {
+			/* Enable Power Limit */
+			\_SB.PCI0.MCHC.CTLE (\F0PW)
+		}
+	}
+
 	ThermalZone (THRM)
 	{
 		Name (_TC1, 0x02)
diff --git a/src/mainboard/google/falco/acpi_tables.c b/src/mainboard/google/falco/acpi_tables.c
index 34c4407628..ba084a11d9 100644
--- a/src/mainboard/google/falco/acpi_tables.c
+++ b/src/mainboard/google/falco/acpi_tables.c
@@ -48,6 +48,7 @@ static void acpi_update_thermal_table(global_nvs_t *gnvs)
 	gnvs->tcrt = CRITICAL_TEMPERATURE;
 	gnvs->tpsv = PASSIVE_TEMPERATURE;
 	gnvs->tmax = MAX_TEMPERATURE;
+	gnvs->f0pw = EC_THROTTLE_POWER_LIMIT;
 	gnvs->flvl = 1;
 }
 
diff --git a/src/mainboard/google/falco/ec.h b/src/mainboard/google/falco/ec.h
index 11d2453837..c61d3da233 100644
--- a/src/mainboard/google/falco/ec.h
+++ b/src/mainboard/google/falco/ec.h
@@ -35,6 +35,8 @@
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY)           |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_THRESHOLD) |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THERMAL_OVERLOAD)  |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_START)    |\
+	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_THROTTLE_STOP)     |\
 	 EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_CHARGER))
 
 #define MAINBOARD_EC_SMI_EVENTS \
diff --git a/src/mainboard/google/falco/thermal.h b/src/mainboard/google/falco/thermal.h
index cfda67d66c..9bd6ee64ce 100644
--- a/src/mainboard/google/falco/thermal.h
+++ b/src/mainboard/google/falco/thermal.h
@@ -22,6 +22,9 @@
 
 #define TEMPERATURE_SENSOR_ID		0	/* PECI */
 
+/* Power level to set when EC requests throttle */
+#define EC_THROTTLE_POWER_LIMIT		12	/* 12W */
+
 /* Temperature which OS will shutdown at */
 #define CRITICAL_TEMPERATURE		104