DM6446+DP83848无法正常工作“ping failed; host 192.168.1.1 is not alive”

fan chuankang

Intellectual 763 points

Other Parts Discussed in Thread: AM3358

芯片：DM6446 + PHY DP83848

硬件平台：自主设计

软件环境： uboot下调试

阶段：处于硬件调试阶段

错误描述：无法ping：

提示：

ping failed; host 192.168.1.1 is not alive

通过查看文章，考虑是否是寄存器配置不一致，

也就是说PHY（DP83848）和DM6446的EMAC相关控制寄存器配置不一致，导致无法正常工作。

请教几个问题：

1、如何针对DP83848 如何配置 dm6446 emac或者mdio的寄存器

2、uboot中相关设置代码？

3、DM6446的EMAC控制寄存器地址？

12 年多前

0 fan chuankang 12 年多前

Intellectual 763 points

初始化信息（通过串口）

添加了调试信息打印

DM6446_810 initialization passed!

Booting TI User Boot Loader

UBL Version: 1.65

UBL Flashtype: NAND

Starting NAND Copy...

Valid magicnum, 0x55424CBB, found in block 0x00000006.

DONE

umping to entry point at 0x81080000.

U-Boot 1.2.0 (Apr 25 2013 - 09:27:52)

U-Boot code: 81080000 -> 810A5570 BSS: -> 810B0DD4

dram_init info:

start:0x80000000, size:0x10000000

RAM Configuration:

Bank #0: 80000000 256 MB

******Init-1 NAND*******

NAND: 256 MB

******Init-2 env_relocate*******

env_relocate[197] offset = 0x0

env_relocate[215] malloced ENV at 81051a60

env_relocate[248] env_relocate_spec

env_nand.c env_relocate_spec

******Init-3 IP and MAC*******

******Init-4 devices_init*******

******Init-5 jumptable*******

******Init-6 console_init_r*******

In: serial

serial: 80000003 : 0

tstc:810847e4

getc:81084808

putc:81084878

puts:810848b0

Out: serial

serial: 80000003 : 0

tstc:810847e4

getc:81084808

putc:81084878

puts:810848b0

Err: serial

******Init-7 misc_init_r*******

ARM Clock : 405MHz

DDR Clock : 189MHz

dm644x_eth_phy_detect(), ALIVE = 0x00000002

active_phy_addr = 0x01

phy_id = 0x20005c90

Ethernet PHY: DP83848 @ 0x01

******Init-8 ethenet init*******

### main_loop entered: bootdelay=10

### main_loop: bootcmd="nboot 0x80800000 0 0x168000"

Hit any key to stop autoboot: 0

Fanck_v1.2 #

从打印的调试信息看出，DP83848初始化通过。

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

Ping 命令下的调试信息

Fanck_v1.2 # ping 192.168.1.1

+ emac_close

+ emac_ch_teardown

- emac_ch_teardown

+ emac_ch_teardown

- emac_ch_teardown

- emac_close

+ emac_open

- emac_open

sending ARP for 0101a8c0

ARP broadcast 1

ARP broadcast 2

+ emac_close

+ emac_ch_teardown

- emac_ch_teardown

+ emac_ch_teardown

- emac_ch_teardown

- emac_close

ping failed; host 192.168.1.1 is not alive

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

uboot下使用mii命令

Fanck _v1.2 # mii dump 0x01 0

0. (3100) -- PHY control register --

(8000:0000) 0.15 = 0 reset

(4000:0000) 0.14 = 0 loopback

(2040:2000) 0. 6,13 = b01 speed selection = 100 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

(0100:0100) 0. 8 = 1 duplex = full

(0080:0000) 0. 7 = 0 collision test enable

(003f:0000) 0. 5- 0 = 0 (reserved)

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

由于能用mii接口访问PHY，并且从dp83848的clkout能观测到波形，

判断电路正确

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

考虑是控制寄存器配置的问题，手头有合纵达的板子。对此进行对比试验。

PHY内部控制寄存器比较

用mii显示phy内部控制寄存器值（合纵达大量修改了uboot代码，下面0x01应该不是其真正的地址，mii访问到的不是

真实的值。

SEED_DVS6446_v1.2 # mii dump 0x01 0

0. (ffff) -- PHY control register --

(8000:8000) 0.15 = 1 reset

(4000:4000) 0.14 = 1 loopback

(2040:2040) 0. 6,13 = b11 speed selection = ??? Mbps

(1000:1000) 0.12 = 1 A/N enable

(0800:0800) 0.11 = 1 power-down

(0400:0400) 0.10 = 1 isolate

(0200:0200) 0. 9 = 1 restart A/N

(0100:0100) 0. 8 = 1 duplex = full

(0080:0080) 0. 7 = 1 collision test enable

(003f:003f) 0. 5- 0 = 63 (reserved)

Fanck_v1.2 # mii dump 0x01 0

dm644x_eth_phy_read(): phy_addr=0001, reg_num=0x0000 , data = 0x3100

0. (3100) -- PHY control register --

(8000:0000) 0.15 = 0 reset

(4000:0000) 0.14 = 0 loopback

(2040:2000) 0. 6,13 = b01 speed selection = 100 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

(0100:0100) 0. 8 = 1 duplex = full

(0080:0000) 0. 7 = 0 collision test enable

(003f:0000) 0. 5- 0 = 0 (reserved)

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

DM6446的EMAC、MDIO控制寄存器访问

Uboot中关于寄存器地址的定义

#define EMAC_BASE_ADDR (0x01c80000)

#define EMAC_WRAPPER_BASE_ADDR (0x01c81000)

#define EMAC_WRAPPER_RAM_ADDR (0x01c82000)

#define EMAC_MDIO_BASE_ADDR (0x01c84000)

SEED_DVS6446_v1.2 # md 0x01c80000

01c80000: 000c0a07 00000000 00000000 00000000 ................

01c80010: 000c0a07 00000000 00000000 00000000 ................

01c80020: 00000000 00000000 00000000 00000000 ................

Fanck_v1.2 # md 0x01c80000

01c80000: 000c0a07 00000000 00000000 00000000 ................

01c80010: 000c0a07 00000000 00000000 00000000 ................

01c80020: 00000000 00000000 00000000 00000000 ................

基本一致

其中 0h 000c0a07应该是Transmit Identification and Version Register (TXIDVER)

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

MDIO寄存器值 0x01c84000

01c84000: 00070103 41040030 00000001 00000001 ....0..A........

01c84010: 00000003 00000000 00000000 00000000 ................

01c84020: 00000001 00000000 00000000 00000000 ................

01c84030: 00000000 00000000 00000000 00000000 ................

01c84040: 00000000 00000000 00000000 00000000 ................

01c84050: 00000000 00000000 00000000 00000000 ................

01c84060: 00000000 00000000 00000000 00000000 ................

01c84070: 00000000 00000000 00000000 00000000 ................

01c84080: 20003000 00000000 00000000 00000000 .0. ............

01c84090: 00000000 00000000 00000000 00000000 ................

01c840a0: 00000000 00000000 00000000 00000000 ................

01c840b0: 00000000 00000000 00000000 00000000 ................

01c840c0: 00000000 00000000 00000000 00000000 ................

01c840d0: 00000000 00000000 00000000 00000000 ................

01c840e0: 00000000 00000000 00000000 00000000 ................

01c840f0: 00000000 00000000 00000000 00000000 ................

Fanck_v1.2 # md 0x01c84000

01c84000: 00070103 41000030 00000002 00000002 ....0..A........

01c84010: 00000000 00000000 00000000 00000000 ................

01c84020: 00000001 00000000 00000000 00000000 ................

01c84030: 00000000 00000000 00000000 00000000 ................

01c84040: 00000000 00000000 00000000 00000000 ................

01c84050: 00000000 00000000 00000000 00000000 ................

01c84060: 00000000 00000000 00000000 00000000 ................

01c84070: 00000000 00000000 00000000 00000000 ................

01c84080: 20013100 00000000 00000000 00000000 .1. ............

01c84090: 00000000 00000000 00000000 00000000 ................

01c840a0: 00000000 00000000 00000000 00000000 ................

01c840b0: 00000000 00000000 00000000 00000000 ................

01c840c0: 00000000 00000000 00000000 00000000 ................

01c840d0: 00000000 00000000 00000000 00000000 ................

01c840e0: 00000000 00000000 00000000 00000000 ................

01c840f0: 00000000 00000000 00000000 00000000 ................

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

1）MDIO （4h） CONTROL

（41040030 ：0100 0001 0000 0100 0000 0000 0011 0000）

（41000030 ：0100 0001 0000 0000 0000 0000 0011 0000）

区别

2）MDIO（08h） ALIVE

00000002 说明 Address 为0x1的PHY识别到

3）MDIO（0ch） LINK

00000002 说明 Address 为0x1的PHY识别到

4）MDIO（80h）USERACCESS0

20003000：0010 0000 0000 0000 0011 0000 0000 0000

20013100：0010 0000 0000 0001 0011 0001 0000 0000

PHYADR【20-16】：0 0001 说明PHY地址为0x01

0 fan chuankang 12 年多前回复 fan chuankang

Intellectual 763 points

问题已经解决。

最终在TI的英文网上上找到思路。

是硬件上的一个问题，焊接工人的一个失误。

寻找定位到这个问题，十分费劲。

0 jie wang4 11 年多前回复 fan chuankang

Prodigy 180 points

请问，是什么问题，我做的am3358+ar8031遇到同样的问题，如可以，请发qq8341248@163.com,谢谢

0 Yongcheng Li 11 年多前回复 fan chuankang

你好，请问能把你的问题定位给我解释一下么？现在我调试网络这一块，肯定是硬件问题，但是AR8031的管脚信号都是正常的，但是ping不通，谢谢了！

0 hai sun1 10 年多前回复 fan chuankang

Prodigy 60 points

我也遇到相似问题，我是使用DM6467+88e1111.更改了phy.ping不同，能否把解决问题的方法发给我一份。邮箱sunhaichaook@163.com

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DM6446+DP83848无法正常工作“ping failed; host 192.168.1.1 is not alive”

1）MDIO （4h） CONTROL

2）MDIO（08h） ALIVE

3）MDIO（0ch） LINK

4）MDIO（80h）USERACCESS0