diff --git a/src/soc/amd/stoneyridge/include/soc/aoac_defs.h b/src/soc/amd/stoneyridge/include/soc/aoac_defs.h
new file mode 100644
index 0000000000..26dbd27999
--- /dev/null
+++ b/src/soc/amd/stoneyridge/include/soc/aoac_defs.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_STONEYRIDGE_AOAC_DEFS_H
+#define AMD_STONEYRIDGE_AOAC_DEFS_H
+
+/* FCH AOAC device offsets for AOAC_DEV_D3_CTL/AOAC_DEV_D3_STATE */
+#define FCH_AOAC_DEV_CLK_GEN		0
+#define FCH_AOAC_DEV_I2C0		5
+#define FCH_AOAC_DEV_I2C1		6
+#define FCH_AOAC_DEV_I2C2		7
+#define FCH_AOAC_DEV_I2C3		8
+#define FCH_AOAC_DEV_UART0		11
+#define FCH_AOAC_DEV_UART1		12
+#define FCH_AOAC_DEV_AMBA		17
+#define FCH_AOAC_DEV_USB2		18
+#define FCH_AOAC_DEV_USB3		23
+
+#endif /* AMD_STONEYRIDGE_AOAC_DEFS_H */
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index 80a6c6bc58..224010c24d 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -131,18 +131,6 @@
 #define   DEBUG_PORT_ENABLE		  BIT(18)
 #define   DEBUG_PORT_MASK		(BIT(16) | BIT(17) | BIT(18))
 
-/* FCH AOAC device offsets for AOAC_DEV_D3_CTL/AOAC_DEV_D3_STATE */
-#define FCH_AOAC_DEV_CLK_GEN		0
-#define FCH_AOAC_DEV_I2C0		5
-#define FCH_AOAC_DEV_I2C1		6
-#define FCH_AOAC_DEV_I2C2		7
-#define FCH_AOAC_DEV_I2C3		8
-#define FCH_AOAC_DEV_UART0		11
-#define FCH_AOAC_DEV_UART1		12
-#define FCH_AOAC_DEV_AMBA		17
-#define FCH_AOAC_DEV_USB2		18
-#define FCH_AOAC_DEV_USB3		23
-
 #define PM1_LIMIT			16
 #define GPE0_LIMIT			28
 #define TOTAL_BITS(a)			(8 * sizeof(a))
diff --git a/src/soc/amd/stoneyridge/southbridge.c b/src/soc/amd/stoneyridge/southbridge.c
index b7d7b5e486..d9dd78fe13 100644
--- a/src/soc/amd/stoneyridge/southbridge.c
+++ b/src/soc/amd/stoneyridge/southbridge.c
@@ -27,6 +27,7 @@
 #include <soc/pci_devs.h>
 #include <agesa_headers.h>
 #include <soc/acpi.h>
+#include <soc/aoac_defs.h>
 #include <soc/lpc.h>
 #include <soc/nvs.h>
 #include <types.h>