diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index 771554a40e..c79457b4c7 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -73,6 +73,19 @@
 #define PM_GPE0_BLK			0x68
 #define PM_ACPI_SMI_CMD			0x6a
 #define PM_ACPI_CONF			0x74
+#define   PM_ACPI_DECODE_STD		BIT(0)
+#define   PM_ACPI_GLOBAL_EN		BIT(1)
+#define   PM_ACPI_RTC_EN_EN		BIT(2)
+#define   PM_ACPI_TIMER_EN_EN		BIT(4)
+#define   PM_ACPI_MASK_ARB_DIS		BIT(6)
+#define   PM_ACPI_BIOS_RLS		BIT(7)
+#define   PM_ACPI_PWRBTNEN_EN		BIT(8)
+#define   PM_ACPI_REDUCED_HW_EN		BIT(9)
+#define   PM_ACPI_BLOCK_PCIE_PME	BIT(24)
+#define   PM_ACPI_PCIE_WAK_MASK		BIT(25)
+#define   PM_ACPI_WAKE_AS_GEVENT	BIT(27)
+#define   PM_ACPI_NB_PME_GEVENT		BIT(28)
+#define   PM_ACPI_RTC_WAKE_EN		BIT(29)
 #define PM_RST_CTRL1			0xbe
 #define   SLPTYPE_CONTROL_EN		BIT(5)
 #define PM_PMIO_DEBUG			0xd2