diff --git a/src/mainboard/google/fatcat/mainboard.c b/src/mainboard/google/fatcat/mainboard.c
index f514eb96d1..e14c5ace79 100644
--- a/src/mainboard/google/fatcat/mainboard.c
+++ b/src/mainboard/google/fatcat/mainboard.c
@@ -58,6 +58,32 @@ void __weak variant_generate_s0ix_hook(enum s0ix_entry entry)
 	 */
 }
 
+static void mainboard_generate_s0ix_hook(void)
+{
+	acpigen_write_if_lequal_op_int(ARG0_OP, 1);
+	{
+		if (CONFIG(HAVE_SLP_S0_GATE))
+			acpigen_soc_clear_tx_gpio(GPIO_SLP_S0_GATE);
+		variant_generate_s0ix_hook(S0IX_ENTRY);
+	}
+	acpigen_write_else();
+	{
+		if (CONFIG(HAVE_SLP_S0_GATE))
+			acpigen_soc_set_tx_gpio(GPIO_SLP_S0_GATE);
+		variant_generate_s0ix_hook(S0IX_EXIT);
+	}
+	acpigen_write_if_end();
+}
+
+static void mainboard_fill_ssdt(const struct device *dev)
+{
+	acpigen_write_scope("\\_SB");
+	acpigen_write_method_serialized("MS0X", 1);
+	mainboard_generate_s0ix_hook();
+	acpigen_write_method_end(); /* Method */
+	acpigen_write_scope_end(); /* Scope */
+}
+
 static void mainboard_dev_init(struct device *dev)
 {
 	mainboard_ec_init();
@@ -66,6 +92,7 @@ static void mainboard_dev_init(struct device *dev)
 static void mainboard_enable(struct device *dev)
 {
 	dev->ops->init = mainboard_dev_init;
+	dev->ops->acpi_fill_ssdt = mainboard_fill_ssdt;
 }
 
 struct chip_operations mainboard_ops = {