ar71xx: connect GMAC0 to the internal switch on DB120

Because the external switch has no driver yet, connect GMAC0
to the PHY4 of the internal switch for now. This allows to
use the DB120 board as a router with 4LAN+1WAN ports.

SVN-Revision: 29557

target/linux/ar71xx/base-files/etc/uci-defaults/network

@@ -19,6 +19,12 @@ all0258n)
 	ucidef_set_interface_lan "eth0 eth1"
 	;;
 
+db120)
+	ucidef_set_interfaces_lan_wan "eth1" "eth0"
+	ucidef_add_switch "switch0" "1" "1"
+	ucidef_add_switch_vlan "switch0" "1" "0 1 2 3 4"
+	;;
+
 dir-825-b1)
 	ucidef_set_interfaces_lan_wan "eth0.1" "eth1"
 	ucidef_add_switch "rtl8366s" "1" "1"

target/linux/ar71xx/files/arch/mips/ar71xx/mach-db120.c

@@ -2,6 +2,7 @@
  *  Atheros DB120 board (WASP SoC) support
  *
  *  Copyright (C) 2010-2011 Jaiganesh Narayanan <[email protected]>
+ *  Copyright (C) 2011 Gabor Juhos <[email protected]>
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License version 2 as published
@@ -10,6 +11,7 @@
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
 
 #include <asm/mach-ar71xx/ar71xx.h>
 
@@ -112,6 +114,21 @@ static struct gpio_keys_button db120_gpio_keys[] __initdata = {
 	}
 };
 
+static void __init db120_gmac_setup(void)
+{
+	void __iomem *base;
+	u32 t;
+
+	base = ioremap(AR934X_GMAC_BASE, AR934X_GMAC_SIZE);
+
+	t = __raw_readl(base + AR934X_GMAC_REG_ETH_CFG);
+	t &= ~(AR934X_ETH_CFG_RGMII_GMAC0 | AR934X_ETH_CFG_MII_GMAC0 |
+	       AR934X_ETH_CFG_MII_GMAC0 | AR934X_ETH_CFG_SW_ONLY_MODE);
+	__raw_writel(t, base + AR934X_GMAC_REG_ETH_CFG);
+
+	iounmap(base);
+}
+
 static void __init db120_setup(void)
 {
 	u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
@@ -129,14 +146,25 @@ static void __init db120_setup(void)
 					 ARRAY_SIZE(db120_gpio_keys),
 					 db120_gpio_keys);
 
+	db120_gmac_setup();
+
 	ar71xx_add_device_mdio(0, 0x0);
 	ar71xx_add_device_mdio(1, 0x0);
 
-	/* GMAC0 is connected to an AR8327 switch */
 	ar71xx_init_mac(ar71xx_eth0_data.mac_addr, art + DB120_MAC0_OFFSET, 0);
+#if 0
+	/* GMAC0 is connected to an AR8327 switch */
 	ar71xx_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 	ar71xx_eth0_data.speed = SPEED_1000;
 	ar71xx_eth0_data.duplex = DUPLEX_FULL;
+#else
+	/* GMAC0 is connected to PHY4 of the internal switch */
+	ar71xx_switch_data.phy4_mii_en = 1;
+
+	ar71xx_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
+	ar71xx_eth0_data.phy_mask = BIT(4);
+	ar71xx_eth0_data.mii_bus_dev = &ar71xx_mdio1_device.dev;
+#endif
 
 	ar71xx_add_device_eth(0);