boards: ls1046ardb: disable unavailable "ethernet" node in dts

Linux device tree contains "ethernet" node for all possible
interface supported by SoC i.e. LS1046A.

It is not necessary for a SerDes protocol to support all possible
interface. So disable unavailable "ethernet" node in device tree.

Also, enable FDT_SEQ_MACADDR_FROM_ENV to fetch MAC address
sequentially from environment variables

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

board/freescale/ls1046ardb/eth.c

@@ -75,3 +75,54 @@ int board_eth_init(bd_t *bis)
 
 	return pci_eth_init(bis);
 }
+
+#ifdef CONFIG_FMAN_ENET
+int fdt_update_ethernet_dt(void *blob)
+{
+	u32 srds_s1;
+	int i, prop;
+	int offset, nodeoff;
+	const char *path;
+	struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
+
+	srds_s1 = in_be32(&gur->rcwsr[4]) &
+			FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK;
+	srds_s1 >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
+
+	/* Cycle through all aliases */
+	for (prop = 0; ; prop++) {
+		const char *name;
+
+		/* FDT might have been edited, recompute the offset */
+		offset = fdt_first_property_offset(blob,
+						   fdt_path_offset(blob,
+								   "/aliases")
+						   );
+		/* Select property number 'prop' */
+		for (i = 0; i < prop; i++)
+			offset = fdt_next_property_offset(blob, offset);
+
+		if (offset < 0)
+			break;
+
+		path = fdt_getprop_by_offset(blob, offset, &name, NULL);
+		nodeoff = fdt_path_offset(blob, path);
+
+		switch (srds_s1) {
+		case 0x1133:
+			if (!strcmp(name, "ethernet0"))
+				fdt_status_disabled(blob, nodeoff);
+
+			if (!strcmp(name, "ethernet1"))
+				fdt_status_disabled(blob, nodeoff);
+		break;
+		default:
+			printf("%s: Invalid SerDes prtcl 0x%x for LS1046ARDB\n",
+			       __func__, srds_s1);
+		break;
+		}
+	}
+
+	return 0;
+}
+#endif

include/configs/ls1046ardb.h

@@ -195,6 +195,8 @@
 
 #define FM1_10GEC1_PHY_ADDR		0x0
 
+#define FDT_SEQ_MACADDR_FROM_ENV
+
 #define CONFIG_ETHPRIME			"FM1@DTSEC3"
 #endif