From 25bb83b69521cc7082f8132e2d52cc4e48c3002e Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 28 Apr 2009 23:27:40 +0000
Subject: atheros: add kernel workaround for bringing up eth1 on devices with a
micrel switch (PHY is unconnected for ENET1, switch is not configurable
through MDIO)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15472 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../220-enet_micrel_workaround.patch | 69 ++++++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch
(limited to 'target/linux')
diff --git a/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch b/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch
new file mode 100644
index 000000000..676b041fe
--- /dev/null
+++ b/target/linux/atheros/patches-2.6.28/220-enet_micrel_workaround.patch
@@ -0,0 +1,69 @@
+--- a/drivers/net/ar231x.c
++++ b/drivers/net/ar231x.c
+@@ -148,6 +148,7 @@ static int ar231x_mdiobus_write(struct m
+ static int ar231x_mdiobus_reset(struct mii_bus *bus);
+ static int ar231x_mdiobus_probe (struct net_device *dev);
+ static void ar231x_adjust_link(struct net_device *dev);
++static bool no_phy = false;
+
+ #ifndef ERR
+ #define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
+@@ -279,6 +280,21 @@ int __init ar231x_probe(struct platform_
+
+ mdiobus_register(sp->mii_bus);
+
++ /* Workaround for Micrel switch, which is only available on
++ * one PHY and cannot be configured through MDIO */
++ if (!no_phy) {
++ u32 phy_id = 0;
++ get_phy_id(sp->mii_bus, 1, &phy_id);
++ if (phy_id == 0x00221450)
++ no_phy = true;
++ }
++ if (no_phy) {
++ sp->link = 1;
++ netif_carrier_on(dev);
++ return 0;
++ }
++ no_phy = true;
++
+ if (ar231x_mdiobus_probe(dev) != 0) {
+ printk(KERN_ERR "%s: mdiobus_probe failed\n", dev->name);
+ rx_tasklet_cleanup(dev);
+@@ -335,8 +351,10 @@ static int __exit ar231x_remove(struct p
+ rx_tasklet_cleanup(dev);
+ ar231x_init_cleanup(dev);
+ unregister_netdev(dev);
+- mdiobus_unregister(sp->mii_bus);
+- mdiobus_free(sp->mii_bus);
++ if (sp->mii_bus) {
++ mdiobus_unregister(sp->mii_bus);
++ mdiobus_free(sp->mii_bus);
++ }
+ kfree(dev);
+ return 0;
+ }
+@@ -837,7 +855,12 @@ static int ar231x_rx_int(struct net_devi
+ dev->stats.rx_bytes += skb->len;
+
+ /* pass the packet to upper layers */
+- sp->rx(skb);
++ if (sp->rx) {
++ sp->rx(skb);
++ } else {
++ skb->protocol = eth_type_trans(skb, skb->dev);
++ netif_rx(skb);
++ }
+ skb_new->dev = dev;
+
+ /* 16 bit align */
+@@ -1124,6 +1147,9 @@ static int ar231x_ioctl(struct net_devic
+ struct ar231x_private *sp = netdev_priv(dev);
+ int ret;
+
++ if (!sp->phy_dev)
++ return -ENODEV;
++
+ switch (cmd) {
+
+ case SIOCETHTOOL:
--
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