1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
--- 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)
|
