diff --git a/src/soc/mediatek/mt8192/emi.c b/src/soc/mediatek/mt8192/emi.c
new file mode 100644
index 0000000000..7b1d3c2113
--- /dev/null
+++ b/src/soc/mediatek/mt8192/emi.c
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/emi.h>
+
+size_t sdram_size(void)
+{
+	size_t dram_size = 0x100000000;
+
+	return dram_size;
+}
diff --git a/src/soc/mediatek/mt8192/include/soc/emi.h b/src/soc/mediatek/mt8192/include/soc/emi.h
new file mode 100644
index 0000000000..0348573bd0
--- /dev/null
+++ b/src/soc/mediatek/mt8192/include/soc/emi.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_MEDIATEK_MT8192_EMI_H
+#define SOC_MEDIATEK_MT8192_EMI_H
+
+#include <types.h>
+
+size_t sdram_size(void);
+
+#endif /* SOC_MEDIATEK_MT8192_EMI_H */