ls1046aqds: Bypass xfi port fixup for KR mode

u-boot makes a fixup for LS1046AQDS board to setup the properties
'fixed-link' and 'phy-connection-type' to 'xgmii' but in case of
backplane mode this fixup is not correct because it causes the KR link
to fail and so it must be bypassed in order to keep the link in KR
mode as it is defined in DTS.
Signed-off-by: NFlorinel Iordache <florinel.iordache@nxp.com>
[YS: Fix compiling warning]
Reviewed-by: NYork Sun <york.sun@nxp.com>

board/freescale/ls1046aqds/eth.c

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2016 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
  */
 
 #include <common.h>
@@ -153,6 +154,9 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
 			      enum fm_port port, int offset)
 {
 	struct fixed_link f_link;
+	const u32 *handle;
+	const char *prop = NULL;
+	int off;
 
 	if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII) {
 		switch (port) {
@@ -208,16 +212,27 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
 				   "qsgmii");
 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII &&
 		   (port == FM1_10GEC1 || port == FM1_10GEC2)) {
-		/* XFI interface */
-		f_link.phy_id = cpu_to_fdt32(port);
-		f_link.duplex = cpu_to_fdt32(1);
-		f_link.link_speed = cpu_to_fdt32(10000);
-		f_link.pause = 0;
-		f_link.asym_pause = 0;
-		/* no PHY for XFI */
-		fdt_delprop(fdt, offset, "phy-handle");
-		fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
-		fdt_setprop_string(fdt, offset, "phy-connection-type", "xgmii");
+		handle = fdt_getprop(fdt, offset, "phy-handle", NULL);
+		prop = NULL;
+		if (handle) {
+			off = fdt_node_offset_by_phandle(fdt,
+							 fdt32_to_cpu(*handle));
+			prop = fdt_getprop(fdt, off, "backplane-mode", NULL);
+		}
+		if (!prop || strcmp(prop, "10gbase-kr")) {
+			/* XFI interface */
+			f_link.phy_id = cpu_to_fdt32(port);
+			f_link.duplex = cpu_to_fdt32(1);
+			f_link.link_speed = cpu_to_fdt32(10000);
+			f_link.pause = 0;
+			f_link.asym_pause = 0;
+			/* no PHY for XFI */
+			fdt_delprop(fdt, offset, "phy-handle");
+			fdt_setprop(fdt, offset, "fixed-link", &f_link,
+				    sizeof(f_link));
+			fdt_setprop_string(fdt, offset, "phy-connection-type",
+					   "xgmii");
+		}
 	}
 }