ar71xx: fix 100/10mbps ethernet link issues on mynet range extender

The mynet range extender hardware is suffering from ethernet
link loss when booting with a recent openwrt image. This only
happens on 100mbps links, with 1Gbps speed the link was fine.

The cause of the problem is that the AR8035 PHY (aka F1E)
requires turning on and off the special TX delay setting
depending on the speed of the link.

The 10mbps mode only needed the proper pll value, which was
extracted from the vendor code.

Reported-by: Pascal Paradis
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45954 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 20 insertions, 0 deletions

diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-rext.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-rext.c
index 02d168ef4b..3d48ca8fa5 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-rext.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-mynet-rext.c
@@ -14,6 +14,7 @@
 #include <linux/platform_device.h>
 #include <linux/ath9k_platform.h>
 #include <linux/ar8216_platform.h>
+#include <linux/platform_data/phy-at803x.h>
 
 #include <asm/mach-ath79/ar71xx_regs.h>
 
@@ -124,6 +125,21 @@ static struct gpio_keys_button mynet_rext_gpio_keys[] __initdata = {
 	},
 };
 
+static struct at803x_platform_data mynet_rext_at803x_data = {
+	.disable_smarteee = 0,
+	.enable_rgmii_rx_delay = 1,
+	.enable_rgmii_tx_delay = 0,
+	.fixup_rgmii_tx_delay = 1,
+};
+
+static struct mdio_board_info mynet_rext_mdio0_info[] = {
+        {
+                .bus_id = "ag71xx-mdio.0",
+                .phy_addr = 4,
+                .platform_data = &mynet_rext_at803x_data,
+        },
+};
+
 static void mynet_rext_get_mac(const char *name, char *mac)
 {
 	u8 *nvram = (u8 *) KSEG1ADDR(MYNET_REXT_NVRAM_ADDR);
@@ -169,12 +185,16 @@ static void __init mynet_rext_setup(void)
 
 	ath79_register_mdio(0, 0x0);
 
+	mdiobus_register_board_info(mynet_rext_mdio0_info,
+				    ARRAY_SIZE(mynet_rext_mdio0_info));
+
 	/* LAN */
 	mynet_rext_get_mac("et0macaddr=", ath79_eth0_data.mac_addr);
 
 	/* GMAC0 is connected to an external PHY on Port 4 */
 	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
 	ath79_eth0_data.phy_mask = BIT(4);
+	ath79_eth0_pll_data.pll_10   = 0x00001313; /* athrs_mac.c */
 	ath79_eth0_pll_data.pll_1000 = 0x0e000000; /* athrs_mac.c */
 	ath79_eth0_data.mii_bus_dev = &ath79_mdio0_device.dev;
 	ath79_register_eth(0);