mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 23:42:43 +00:00
96 lines
2.6 KiB
Diff
96 lines
2.6 KiB
Diff
--- a/drivers/net/cpmac.c
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+++ b/drivers/net/cpmac.c
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@@ -33,6 +33,7 @@
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#include <linux/skbuff.h>
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#include <linux/mii.h>
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#include <linux/phy.h>
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+#include <linux/phy_fixed.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <asm/gpio.h>
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@@ -217,6 +218,12 @@ static void cpmac_hw_stop(struct net_dev
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static int cpmac_stop(struct net_device *dev);
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static int cpmac_open(struct net_device *dev);
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+static struct fixed_phy_status fixed_phy_status = {
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+ .link = 1,
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+ .speed = 100,
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+ .duplex = 1,
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+};
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+
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static void cpmac_dump_regs(struct net_device *dev)
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{
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int i;
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@@ -1111,9 +1118,13 @@ static int __devinit cpmac_probe(struct
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struct cpmac_priv *priv;
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struct net_device *dev;
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struct plat_cpmac_data *pdata;
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+ void __iomem *mii_reg;
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+ u32 tmp;
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+ unsigned external_mii = 0;
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pdata = pdev->dev.platform_data;
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+detect_again:
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for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
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if (!(pdata->phy_mask & (1 << phy_id)))
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continue;
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@@ -1122,12 +1133,43 @@ static int __devinit cpmac_probe(struct
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strncpy(mdio_bus_id, cpmac_mii->id, MII_BUS_ID_SIZE);
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break;
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}
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-
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- if (phy_id == PHY_MAX_ADDR) {
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- dev_err(&pdev->dev, "no PHY present\n");
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- return -ENODEV;
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+
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+ if (phy_id < PHY_MAX_ADDR && !external_mii)
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+ goto dev_alloc;
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+
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+ /* Now disable EPHY and enable MII */
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+ dev_info(&pdev->dev, "trying external MII\n");
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+ ar7_device_disable(AR7_RESET_BIT_EPHY);
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+
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+ mii_reg = ioremap(AR7_REGS_MII, 4);
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+ if (!mii_reg) {
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+ dev_err(&pdev->dev, "failed to iorenamp MII_SEL\n");
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+ return -ENOMEM;
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}
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+ tmp = readl(mii_reg);
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+ tmp |= 1;
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+ writel(tmp, mii_reg);
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+ external_mii++;
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+
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+ if (external_mii == 1)
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+ goto detect_again;
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+
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+ if (phy_id < PHY_MAX_ADDR)
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+ goto dev_alloc;
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+
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+ /* This still does not work, so now we register a fixed phy */
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+ dev_info(&pdev->dev, "using fixed PHY\n");
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+ rc = fixed_phy_add(PHY_POLL, pdev->id, &fixed_phy_status);
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+ if (rc && rc != -ENODEV) {
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+ dev_err(&pdev->dev, "unable to register fixed PHY\n");
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+ return rc;
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+ }
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+
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+ strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
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+ phy_id = pdev->id;
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+
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+dev_alloc:
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dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);
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if (!dev) {
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--- a/arch/mips/include/asm/mach-ar7/ar7.h
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+++ b/arch/mips/include/asm/mach-ar7/ar7.h
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@@ -41,6 +41,7 @@
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#define AR7_REGS_RESET (AR7_REGS_BASE + 0x1600)
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#define AR7_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1800)
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#define AR7_REGS_DCL (AR7_REGS_BASE + 0x1a00)
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+#define AR7_REGS_MII (AR7_REGS_BASE + 0x1a08)
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#define AR7_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1c00)
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#define AR7_REGS_MDIO (AR7_REGS_BASE + 0x1e00)
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#define AR7_REGS_IRQ (AR7_REGS_BASE + 0x2400)
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