diff --git a/arch/arm/mach-airoha/an7581/init.c b/arch/arm/mach-airoha/an7581/init.c
index 11992027d92..ab32706a79d 100644
--- a/arch/arm/mach-airoha/an7581/init.c
+++ b/arch/arm/mach-airoha/an7581/init.c
@@ -8,8 +8,6 @@
 #include <asm/global_data.h>
 #include <asm/system.h>
 
-#define CFG_MAX_MEM_MAPPED  SZ_2G
-
 DECLARE_GLOBAL_DATA_PTR;
 
 int print_cpuinfo(void)
@@ -20,15 +18,7 @@ int print_cpuinfo(void)
 
 int dram_init(void)
 {
-	int ret;
-
-	ret = fdtdec_setup_mem_size_base();
-	if (ret)
-		return ret;
-
-	gd->ram_size = get_ram_size((void *)gd->ram_base, SZ_8G);
-
-	return 0;
+	return fdtdec_setup_mem_size_base();
 }
 
 int dram_init_banksize(void)
diff --git a/include/configs/an7581.h b/include/configs/an7581.h
index 64f04c9d9a5..dfb611d298b 100644
--- a/include/configs/an7581.h
+++ b/include/configs/an7581.h
@@ -15,5 +15,6 @@
 
 /* DRAM */
 #define CFG_SYS_SDRAM_BASE		0x80000000
+#define CFG_MAX_MEM_MAPPED		SZ_2G
 
 #endif