diff --git a/arch/arm/mach-exynos/lowlevel_init.c b/arch/arm/mach-exynos/lowlevel_init.c
index 6c39cb2..1e090fd 100644
--- a/arch/arm/mach-exynos/lowlevel_init.c
+++ b/arch/arm/mach-exynos/lowlevel_init.c
@@ -216,9 +216,12 @@ int do_lowlevel_init(void)
 	if (actions & DO_CLOCKS) {
 		system_clock_init();
 #ifdef CONFIG_DEBUG_UART
+#if (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_SERIAL_SUPPORT)) || \
+    !defined(CONFIG_SPL_BUILD)
 		exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
 		debug_uart_init();
 #endif
+#endif
 		mem_ctrl_init(actions & DO_MEM_RESET);
 		tzpc_init();
 	}