diff --git a/src/soc/amd/stoneyridge/include/soc/lpc.h b/src/soc/amd/stoneyridge/include/soc/lpc.h
new file mode 100644
index 0000000000..55e39cce90
--- /dev/null
+++ b/src/soc/amd/stoneyridge/include/soc/lpc.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_STONEYRIDGE_LPC_H
+#define AMD_STONEYRIDGE_LPC_H
+
+#define SPIROM_BASE_ADDRESS_REGISTER	0xa0
+#define   SPI_BASE_ALIGNMENT		BIT(6)
+#define   SPI_BASE_RESERVED		(BIT(4) | BIT(5))
+#define   ROUTE_TPM_2_SPI		BIT(3)
+#define   SPI_ABORT_ENABLE		BIT(2)
+#define   SPI_ROM_ENABLE		BIT(1)
+#define   SPI_ROM_ALT_ENABLE		BIT(0)
+#define   SPI_PRESERVE_BITS		(BIT(0) | BIT(1) | BIT(2) | BIT(3))
+
+#endif /* AMD_STONEYRIDGE_LPC_H */