1 files changed, 31 insertions, 0 deletions
diff --git a/roms/u-boot/board/seeed/linkit-smart-7688/board.c b/roms/u-boot/board/seeed/linkit-smart-7688/board.c
new file mode 100644
index 000000000..bf7c69ea8
--- /dev/null
+++ b/roms/u-boot/board/seeed/linkit-smart-7688/board.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/io.h>
+#include <linux/bitops.h>
+
+#define MT76XX_GPIO1_MODE	0x10000060
+
+void board_debug_uart_init(void)
+{
+	void __iomem *gpio_mode;
+
+	/* Select UART2 mode instead of GPIO mode (default) */
+	gpio_mode = ioremap_nocache(MT76XX_GPIO1_MODE, 0x100);
+	clrbits_le32(gpio_mode, GENMASK(27, 26));
+}
+
+int board_early_init_f(void)
+{
+	/*
+	 * The pin muxing of UART2 also needs to be done, if debug uart
+	 * is not enabled. So we need to call this function here as well.
+	 */
+	board_debug_uart_init();
+
+	return 0;
+}