[U-Boot] PATCH macb fix phy address

[Giulio Benetti]

- Fixed finding phyter address
- Added searching for other addresses if not found

diff -urpN -X macb-exclude u-boot.orig/drivers/net/macb.c 
u-boot/drivers/net/macb.c
--- u-boot.orig/drivers/net/macb.c	2008-08-12 16:08:38.000000000 +0200
+++ u-boot/drivers/net/macb.c	2008-11-12 12:51:16.000000000 +0100
@@ -1,5 +1,7 @@
 /*
  * Copyright (C) 2005-2006 Atmel Corporation
+ * Giulio Benetti <giulio.benetti at micronovasrl.com>
+ * Micronova srl <info at micronovasrl.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -84,6 +86,8 @@ struct macb_dma_desc {
 #define TXBUF_WRAP		0x40000000
 #define TXBUF_USED		0x80000000
 
+#define MAX_PHY_ADDRESS_NUMBER	32
+
 struct macb_device {
 	void			*regs;
 
@@ -325,8 +329,18 @@ static int macb_phy_init(struct macb_dev
 	int i;
 
 	/* Check if the PHY is up to snuff... */
-	phy_id = macb_mdio_read(macb, MII_PHYSID1);
-	if (phy_id == 0xffff) {
+	printf("%s: Finding PHYs\n", netdev->name);
+
+	for(i = 0; i < MAX_PHY_ADDRESS_NUMBER; i++) {
+		lpa = macb_mdio_read(macb, MII_LPA);
+		phy_id = macb_mdio_read(macb, MII_PHYSID1);
+		if ((phy_id != 0xffff) && (lpa != 0xffff)) {
+			break;
+		}
+		macb->phy_addr++;
+	}
+
+	if(i >= MAX_PHY_ADDRESS_NUMBER) {
 		printf("%s: No PHY present\n", netdev->name);
 		return 0;
 	}

Signed-off-by: Giulio Benetti <giulio.benetti at micronovasrl.com>