+static int board_uart_init(void)
+{
+ int err;
+
+ err = exynos_pinmux_config(PERIPH_ID_UART0, PINMUX_FLAG_NONE);
+ if (err) {
+ debug("UART0 not configured\n");
+ return err;
+ }
+
+ err = exynos_pinmux_config(PERIPH_ID_UART1, PINMUX_FLAG_NONE);
+ if (err) {
+ debug("UART1 not configured\n");
+ return err;
+ }
+
+ err = exynos_pinmux_config(PERIPH_ID_UART2, PINMUX_FLAG_NONE);
+ if (err) {
+ debug("UART2 not configured\n");
+ return err;
+ }
+
+ err = exynos_pinmux_config(PERIPH_ID_UART3, PINMUX_FLAG_NONE);
+ if (err) {
+ debug("UART3 not configured\n");
+ return err;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+ int err;
+ err = board_uart_init();
+ if (err) {
+ debug("UART init failed\n");
+ return err;
+ }
+ return err;
+}
+#endif
+