diff --git a/board/gdsys/common/phy.c b/board/gdsys/common/phy.c
new file mode 100644
index 0000000..fb92658
--- /dev/null
+++ b/board/gdsys/common/phy.c
@@ -0,0 +1,280 @@
+/*
+ * (C) Copyright 2014
+ * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <miiphy.h>
+
+enum {
+	MIICMD_SET,
+	MIICMD_MODIFY,
+	MIICMD_VERIFY_VALUE,
+	MIICMD_WAIT_FOR_VALUE,
+};
+
+struct mii_setupcmd {
+	u8 token;
+	u8 reg;
+	u16 data;
+	u16 mask;
+	u32 timeout;
+};
+
+/*
+ * verify we are talking to a 88e1518
+ */
+struct mii_setupcmd verify_88e1518[] = {
+	{ MIICMD_SET, 22, 0x0000 },
+	{ MIICMD_VERIFY_VALUE, 2, 0x0141, 0xffff },
+	{ MIICMD_VERIFY_VALUE, 3, 0x0dd0, 0xfff0 },
+};
+
+/*
+ * workaround for erratum mentioned in 88E1518 release notes
+ */
+struct mii_setupcmd fixup_88e1518[] = {
+	{ MIICMD_SET, 22, 0x00ff },
+	{ MIICMD_SET, 17, 0x214b },
+	{ MIICMD_SET, 16, 0x2144 },
+	{ MIICMD_SET, 17, 0x0c28 },
+	{ MIICMD_SET, 16, 0x2146 },
+	{ MIICMD_SET, 17, 0xb233 },
+	{ MIICMD_SET, 16, 0x214d },
+	{ MIICMD_SET, 17, 0xcc0c },
+	{ MIICMD_SET, 16, 0x2159 },
+	{ MIICMD_SET, 22, 0x00fb },
+	{ MIICMD_SET,  7, 0xc00d },
+	{ MIICMD_SET, 22, 0x0000 },
+};
+
+/*
+ * default initialization:
+ * - set RGMII receive timing to "receive clock transition when data stable"
+ * - set RGMII transmit timing to "transmit clock internally delayed"
+ * - set RGMII output impedance target to 78,8 Ohm
+ * - run output impedance calibration
+ * - set autonegotiation advertise to 1000FD only
+ */
+struct mii_setupcmd default_88e1518[] = {
+	{ MIICMD_SET, 22, 0x0002 },
+	{ MIICMD_MODIFY, 21, 0x0030, 0x0030 },
+	{ MIICMD_MODIFY, 25, 0x0000, 0x0003 },
+	{ MIICMD_MODIFY, 24, 0x8000, 0x8000 },
+	{ MIICMD_WAIT_FOR_VALUE, 24, 0x4000, 0x4000, 2000 },
+	{ MIICMD_SET, 22, 0x0000 },
+	{ MIICMD_MODIFY, 4, 0x0000, 0x01e0 },
+	{ MIICMD_MODIFY, 9, 0x0200, 0x0300 },
+};
+
+/*
+ * turn off CLK125 for PHY daughterboard
+ */
+struct mii_setupcmd ch1fix_88e1518[] = {
+	{ MIICMD_SET, 22, 0x0002 },
+	{ MIICMD_MODIFY, 16, 0x0006, 0x0006 },
+	{ MIICMD_SET, 22, 0x0000 },
+};
+
+/*
+ * perform copper software reset
+ */
+struct mii_setupcmd swreset_88e1518[] = {
+	{ MIICMD_SET, 22, 0x0000 },
+	{ MIICMD_MODIFY, 0, 0x8000, 0x8000 },
+	{ MIICMD_WAIT_FOR_VALUE, 0, 0x0000, 0x8000, 2000 },
+};
+
+/*
+ * special one for 88E1514:
+ * Force SGMII to Copper mode
+ */
+struct mii_setupcmd mii_to_copper_88e1514[] = {
+	{ MIICMD_SET, 22, 0x0012 },
+	{ MIICMD_MODIFY, 20, 0x0001, 0x0007 },
+	{ MIICMD_MODIFY, 20, 0x8000, 0x8000 },
+	{ MIICMD_SET, 22, 0x0000 },
+};
+
+/*
+ * turn off SGMII auto-negotiation
+ */
+struct mii_setupcmd sgmii_autoneg_off_88e1518[] = {
+	{ MIICMD_SET, 22, 0x0001 },
+	{ MIICMD_MODIFY, 0, 0x0000, 0x1000 },
+	{ MIICMD_MODIFY, 0, 0x8000, 0x8000 },
+	{ MIICMD_SET, 22, 0x0000 },
+};
+
+/*
+ * invert LED2 polarity
+ */
+struct mii_setupcmd invert_led2_88e1514[] = {
+	{ MIICMD_SET, 22, 0x0003 },
+	{ MIICMD_MODIFY, 17, 0x0030, 0x0010 },
+	{ MIICMD_SET, 22, 0x0000 },
+};
+
+static int process_setupcmd(const char *bus, unsigned char addr,
+			    struct mii_setupcmd *setupcmd)
+{
+	int res;
+	u8 reg = setupcmd->reg;
+	u16 data = setupcmd->data;
+	u16 mask = setupcmd->mask;
+	u32 timeout = setupcmd->timeout;
+	u16 orig_data;
+	unsigned long start;
+
+	debug("mii %s:%u reg %2u ", bus, addr, reg);
+
+	switch (setupcmd->token) {
+	case MIICMD_MODIFY:
+		res = miiphy_read(bus, addr, reg, &orig_data);
+		if (res)
+			break;
+		debug("is %04x. (value %04x mask %04x) ", orig_data, data,
+		      mask);
+		data = (orig_data & ~mask) | (data & mask);
+		/* fallthrough */
+	case MIICMD_SET:
+		debug("=> %04x\n", data);
+		res = miiphy_write(bus, addr, reg, data);
+		break;
+	case MIICMD_VERIFY_VALUE:
+		res = miiphy_read(bus, addr, reg, &orig_data);
+		if (res)
+			break;
+		if ((orig_data & mask) != (data & mask))
+			res = -1;
+		debug("(value %04x mask %04x) == %04x? %s\n", data, mask,
+		      orig_data, res ? "FAIL" : "PASS");
+		break;
+	case MIICMD_WAIT_FOR_VALUE:
+		res = -1;
+		start = get_timer(0);
+		while ((res != 0) && (get_timer(start) < timeout)) {
+			res = miiphy_read(bus, addr, reg, &orig_data);
+			if (res)
+				continue;
+			if ((orig_data & mask) != (data & mask))
+				res = -1;
+		}
+		debug("(value %04x mask %04x) == %04x? %s after %lu ms\n", data,
+		      mask, orig_data, res ? "FAIL" : "PASS",
+		      get_timer(start));
+		break;
+	default:
+		res = -1;
+		break;
+	}
+
+	return res;
+}
+
+static int process_setup(const char *bus, unsigned char addr,
+			    struct mii_setupcmd *setupcmd, unsigned int count)
+{
+	int res = 0;
+	unsigned int k;
+
+	for (k = 0; k < count; ++k) {
+		res = process_setupcmd(bus, addr, &setupcmd[k]);
+		if (res) {
+			printf("mii cmd %u on bus %s addr %u failed, aborting setup\n",
+			       setupcmd[k].token, bus, addr);
+			break;
+		}
+	}
+
+	return res;
+}
+
+int setup_88e1518(const char *bus, unsigned char addr)
+{
+	int res;
+
+	res = process_setup(bus, addr,
+			    verify_88e1518, ARRAY_SIZE(verify_88e1518));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    fixup_88e1518, ARRAY_SIZE(fixup_88e1518));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    default_88e1518, ARRAY_SIZE(default_88e1518));
+	if (res)
+		return res;
+
+	if (addr) {
+		res = process_setup(bus, addr,
+				    ch1fix_88e1518, ARRAY_SIZE(ch1fix_88e1518));
+		if (res)
+			return res;
+	}
+
+	res = process_setup(bus, addr,
+			    swreset_88e1518, ARRAY_SIZE(swreset_88e1518));
+	if (res)
+		return res;
+
+	return 0;
+}
+
+int setup_88e1514(const char *bus, unsigned char addr)
+{
+	int res;
+
+	res = process_setup(bus, addr,
+			    verify_88e1518, ARRAY_SIZE(verify_88e1518));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    fixup_88e1518, ARRAY_SIZE(fixup_88e1518));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    mii_to_copper_88e1514,
+			    ARRAY_SIZE(mii_to_copper_88e1514));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    sgmii_autoneg_off_88e1518,
+			    ARRAY_SIZE(sgmii_autoneg_off_88e1518));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    invert_led2_88e1514,
+			    ARRAY_SIZE(invert_led2_88e1514));
+	if (res)
+		return res;
+
+	res = process_setup(bus, addr,
+			    default_88e1518, ARRAY_SIZE(default_88e1518));
+	if (res)
+		return res;
+
+	if (addr) {
+		res = process_setup(bus, addr,
+				    ch1fix_88e1518, ARRAY_SIZE(ch1fix_88e1518));
+		if (res)
+			return res;
+	}
+
+	res = process_setup(bus, addr,
+			    swreset_88e1518, ARRAY_SIZE(swreset_88e1518));
+	if (res)
+		return res;
+
+	return 0;
+}