openwrtv3/target/linux/ar7/patches-2.6.32/972-cpmac_multi_probe.patch

--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -33,6 +33,7 @@
 #include <linux/skbuff.h>
 #include <linux/mii.h>
 #include <linux/phy.h>
+#include <linux/phy_fixed.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <asm/gpio.h>
@@ -217,6 +218,12 @@ static void cpmac_hw_stop(struct net_dev
 static int cpmac_stop(struct net_device *dev);
 static int cpmac_open(struct net_device *dev);
 
+static struct fixed_phy_status fixed_phy_status = {
+	.link = 1,
+	.speed = 100,
+	.duplex = 1,
+};
+
 static void cpmac_dump_regs(struct net_device *dev)
 {
 	int i;
@@ -1111,9 +1118,13 @@ static int __devinit cpmac_probe(struct 
 	struct cpmac_priv *priv;
 	struct net_device *dev;
 	struct plat_cpmac_data *pdata;
+	void __iomem *mii_reg;
+	u32 tmp;
+	unsigned external_mii = 0;
 
 	pdata = pdev->dev.platform_data;
 
+detect_again:
 	for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
 		if (!(pdata->phy_mask & (1 << phy_id)))
 			continue;
@@ -1122,12 +1133,43 @@ static int __devinit cpmac_probe(struct 
 		strncpy(mdio_bus_id, cpmac_mii->id, MII_BUS_ID_SIZE);
 		break;
 	}
-	
-	if (phy_id == PHY_MAX_ADDR) {
-		dev_err(&pdev->dev, "no PHY present\n");
-		return -ENODEV;
+
+	if (phy_id < PHY_MAX_ADDR && !external_mii)
+		goto dev_alloc;
+
+	/* Now disable EPHY and enable MII */
+	dev_info(&pdev->dev, "trying external MII\n");
+	ar7_device_disable(AR7_RESET_BIT_EPHY);
+
+	mii_reg = ioremap(AR7_REGS_MII, 4);
+	if (!mii_reg) {
+		dev_err(&pdev->dev, "failed to iorenamp MII_SEL\n");
+		return -ENOMEM;
 	}
 
+	tmp = readl(mii_reg);
+	tmp |= 1;
+	writel(tmp, mii_reg);
+	external_mii++;
+
+	if (external_mii == 1)
+		goto detect_again;
+
+	if (phy_id < PHY_MAX_ADDR)
+		goto dev_alloc;
+
+	/* This still does not work, so now we register a fixed phy */
+	dev_info(&pdev->dev, "using fixed PHY\n");
+	rc = fixed_phy_add(PHY_POLL, pdev->id, &fixed_phy_status);
+	if (rc && rc != -ENODEV) {
+		dev_err(&pdev->dev, "unable to register fixed PHY\n");
+		return rc;
+	}
+
+	strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
+	phy_id = pdev->id;
+
+dev_alloc:
 	dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);
 
 	if (!dev) {
--- a/arch/mips/include/asm/mach-ar7/ar7.h
+++ b/arch/mips/include/asm/mach-ar7/ar7.h
@@ -41,6 +41,7 @@
 #define AR7_REGS_RESET	(AR7_REGS_BASE + 0x1600)
 #define AR7_REGS_VLYNQ0	(AR7_REGS_BASE + 0x1800)
 #define AR7_REGS_DCL	(AR7_REGS_BASE + 0x1a00)
+#define AR7_REGS_MII	(AR7_REGS_BASE + 0x1a08)
 #define AR7_REGS_VLYNQ1	(AR7_REGS_BASE + 0x1c00)
 #define AR7_REGS_MDIO	(AR7_REGS_BASE + 0x1e00)
 #define AR7_REGS_IRQ	(AR7_REGS_BASE + 0x2400)