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diff --git a/include/winbond_w83627.h b/include/winbond_w83627.h
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+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _WINBOND_W83627_H_
+#define _WINBOND_W83627_H_
+
+/* I/O address of Winbond Super IO chip */
+#define WINBOND_IO_PORT 0x2e
+
+/* Logical device number */
+#define W83627DHG_FDC 0 /* Floppy */
+#define W83627DHG_PP 1 /* Parallel port */
+#define W83627DHG_SP1 2 /* Com1 */
+#define W83627DHG_SP2 3 /* Com2 */
+#define W83627DHG_KBC 5 /* PS/2 keyboard & mouse */
+#define W83627DHG_SPI 6 /* Serial peripheral interface */
+#define W83627DHG_WDTO_PLED 8 /* WDTO#, PLED */
+#define W83627DHG_ACPI 10 /* ACPI */
+#define W83627DHG_HWM 11 /* Hardware monitor */
+#define W83627DHG_PECI_SST 12 /* PECI, SST */
+
+/**
+ * Configure the base I/O port of the specified serial device and enable the
+ * serial device.
+ *
+ * @dev: high 8 bits = super I/O port, low 8 bits = logical device number
+ * @iobase: processor I/O port address to assign to this serial device
+ * @irq: processor IRQ number to assign to this serial device
+ */
+void winbond_enable_serial(uint dev, uint iobase, uint irq);
+
+#endif /* _WINBOND_W83627_H_ */