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目前使用米尔科技的BSP，uboot为2016.03，kernel为L4.1.18，基于AM335x做的开发板，网卡芯片为AR8035。
1. 在uboot阶段调试AR8035，代码如下：
static void cpsw_control(int enabled)
{
/* VTP can be added here */
return;
}
static struct cpsw_slave_data cpsw_slaves[] = {
{
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_addr = 6,
},
};
static struct cpsw_platform_data cpsw_data = {
.mdio_base = CPSW_MDIO_BASE,
.cpsw_base = CPSW_BASE,
.mdio_div = 0xff,
.channels = 8,
.cpdma_reg_ofs = 0x800,
.slaves = 1,
.slave_data = cpsw_slaves,
.ale_reg_ofs = 0xd00,
.ale_entries = 1024,
.host_port_reg_ofs = 0x108,
.hw_stats_reg_ofs = 0x900,
.bd_ram_ofs = 0x2000,
.mac_control = (1 << 5),
.control = cpsw_control,
.host_port_num = 0,
.version = CPSW_CTRL_VERSION_2,
};
static void get_efuse_mac0_addr(uchar *enetaddr)
{
uint32_t mac_hi, mac_lo;
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
mac_lo = readl(&cdev->macid0l);
mac_hi = readl(&cdev->macid0h);
enetaddr[0] = mac_hi & 0xFF;
enetaddr[1] = (mac_hi & 0xFF00) >> 8;
enetaddr[2] = (mac_hi & 0xFF0000) >> 16;
enetaddr[3] = (mac_hi & 0xFF000000) >> 24;
enetaddr[4] = mac_lo & 0xFF;
enetaddr[5] = (mac_lo & 0xFF00) >> 8;
}
/*
* Routine: handle_mac0_address
* Description: prepare MAC address for on-board Ethernet.
*/
static int handle_mac0_address(void)
{
uchar enetaddr[6];
int rv;
rv = eth_getenv_enetaddr("ethaddr", enetaddr);
if (rv)
return 0;
get_efuse_mac0_addr(enetaddr);
if (!is_valid_ethaddr(enetaddr))
return -1;
return eth_setenv_enetaddr("ethaddr", enetaddr);
}
#define AR8051_PHY_DEBUG_ADDR_REG 0x1d
#define AR8051_PHY_DEBUG_DATA_REG 0x1e
#define AR8051_DEBUG_RGMII_CLK_DLY_REG 0x5
#define AR8051_RGMII_TX_CLK_DLY 0x100
/* PHY reset GPIO */
/* GPIO pin + bank to pin ID mapping */
#define GPIO_PIN(_bank, _pin) ((_bank << 5) + _pin)
#define GPIO_PHY_RST GPIO_PIN(3, 8)
static void board_phy_init(void)
{
gpio_request(GPIO_PHY_RST, "phy_rst");
gpio_direction_output(GPIO_PHY_RST, 0);
mdelay(2);
gpio_set_value(GPIO_PHY_RST, 1);
mdelay(2);
}
int board_eth_init(bd_t *bis)
{
int rv, n = 0;
const char *devname;
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
rv = handle_mac0_address();
if (rv)
printf("No MAC address for mac0 found!\n");
writel(RGMII_MODE_ENABLE | RGMII_INT_DELAY, &cdev->miisel);
cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RGMII;
//board_phy_init();
rv = cpsw_register(&cpsw_data);
if (rv < 0)
printf("Error %d registering CPSW switch\n", rv);
else
n += rv;
/*
* CPSW RGMII Internal Delay Mode is not supported in all PVT
* operating points. So we must set the TX clock delay feature
* in the AR8051 PHY. Since we only support a single ethernet
* device, we only do this for the first instance.
*/
devname = miiphy_get_current_dev();
miiphy_write(devname, 0x6, AR8051_PHY_DEBUG_ADDR_REG,
AR8051_DEBUG_RGMII_CLK_DLY_REG);
miiphy_write(devname, 0x6, AR8051_PHY_DEBUG_DATA_REG,
AR8051_RGMII_TX_CLK_DLY);
return n;
}
2.目前测量3.3v电压与1.1v电压均在正常范围内，采用外部晶体25MHz，测量Tclk/Rclk均为25MHz
3.电路设置PHY地址为6，设置模式为RGMII,PLLON,INT
4.通过读取mii info命令打印：
PHY 0x06: OUI = 0x1374, Model = 0x07, Rev = 0x02, 1000baseX, HDX
5.插上网线通过mii dump 0x6 0-5命令打印：
0. (1000) — PHY control register —
(8000:0000) 0.15 = 0 reset
(4000:0000) 0.14 = 0 loopback
(2040:0000) 0. 6,13 = b00 speed selection = 10 Mbps
(1000:1000) 0.12 = 1 A/N enable
(0800:0000) 0.11 = 0 power-down
(0400:0000) 0.10 = 0 isolate
(0200:0000) 0. 9 = 0 restart A/N
(0100:0000) 0. 8 = 0 duplex = half
(0080:0000) 0. 7 = 0 collision test enable
(003f:0000) 0. 5- 0 = 0 (reserved)
1. (796d) — PHY status register —
(8000:0000) 1.15 = 0 100BASE-T4 able
(4000:4000) 1.14 = 1 100BASE-X full duplex able
(2000:2000) 1.13 = 1 100BASE-X half duplex able
(1000:1000) 1.12 = 1 10 Mbps full duplex able
(0800:0800) 1.11 = 1 10 Mbps half duplex able
(0400:0000) 1.10 = 0 100BASE-T2 full duplex able
(0200:0000) 1. 9 = 0 100BASE-T2 half duplex able
(0100:0100) 1. 8 = 1 extended status
(0080:0000) 1. 7 = 0 (reserved)
(0040:0040) 1. 6 = 1 MF preamble suppression
(0020:0020) 1. 5 = 1 A/N complete
(0010:0000) 1. 4 = 0 remote fault
(0008:0008) 1. 3 = 1 A/N able
(0004:0004) 1. 2 = 1 link status
(0002:0000) 1. 1 = 0 jabber detect
(0001:0001) 1. 0 = 1 extended capabilities
2. (004d) — PHY ID 1 register —
(ffff:004d) 2.15- 0 = 77 OUI portion
3. (d072) — PHY ID 2 register —
(fc00:d000) 3.15-10 = 52 OUI portion
(03f0:0070) 3. 9- 4 = 7 manufacturer part number
(000f:0002) 3. 3- 0 = 2 manufacturer rev. number
4. (11e1) — Autonegotiation advertisement register —
(8000:0000) 4.15 = 0 next page able
(4000:0000) 4.14 = 0 (reserved)
(2000:0000) 4.13 = 0 remote fault
(1000:1000) 4.12 = 1 (reserved)
(0800:0000) 4.11 = 0 asymmetric pause
(0400:0000) 4.10 = 0 pause enable
(0200:0000) 4. 9 = 0 100BASE-T4 able
(0100:0100) 4. 8 = 1 100BASE-TX full duplex able
(0080:0080) 4. 7 = 1 100BASE-TX able
(0040:0040) 4. 6 = 1 10BASE-T full duplex able
(0020:0020) 4. 5 = 1 10BASE-T able
(001f:0001) 4. 4- 0 = 1 selector = IEEE 802.3
5. (45e1) — Autonegotiation partner abilities register —
(8000:0000) 5.15 = 0 next page able
(4000:4000) 5.14 = 1 acknowledge
(2000:0000) 5.13 = 0 remote fault
(1000:0000) 5.12 = 0 (reserved)
(0800:0000) 5.11 = 0 asymmetric pause able
(0400:0400) 5.10 = 1 pause able
(0200:0000) 5. 9 = 0 100BASE-T4 able
(0100:0100) 5. 8 = 1 100BASE-X full duplex able
(0080:0080) 5. 7 = 1 100BASE-TX able
(0040:0040) 5. 6 = 1 10BASE-T full duplex able
(0020:0020) 5. 5 = 1 10BASE-T able
(001f:0001) 5. 4- 0 = 1 selector = IEEE 802.3
6.目前从AR8035 dump出来的寄存器值与米尔科技开发板AR8035 dump出来的值一模一样
目前的问题是：
1.设置ip后，开发板可以ping通电脑，但是偶尔会出现无法ping通电脑。设置tftp功能后，下载小文件，偶尔可以下载成功，偶尔下载不成功。只有在开发板上执行tftp功能时，电脑才可以ping通开发板，不知道这是怎么回事？
2.在开发板上ping通电脑后，执行mii info命令或者mii dump 0x6 0-5都会失败，而米尔开发板则不会出现这个问题，也不知道是怎么回事？
3.目前AR8035并没有和AM335x放在同一块开发板上，pcb layout也没有怎么做等长设计，从AR8035到AM335x两块板之间的连接线很长，大概有20inch，不知道这个是否会有影响？
请TI各位大神，鼎力相助，谢谢
Shine：
不稳定的话，感觉还是硬件上的问题大些，先看一下AR8035芯片厂商提供的手册看一下布线的要求。
user5849257：
回复 Shine:
你们demo开发板也是AR8035，请问你们是否有做等长处理呢？谢谢
yongqing wang：
回复 user5849257:
布线要求请直接参考AR8035的数据手册
user5849257：
回复 yongqing wang:
你好，查看AR8035芯片手册没有布线做要求，请问是否还有其他可能性，谢谢
