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我使用DM385 和AR8035 作为网络接口,原理图如下,
我的PHY 接RJ45 接口至转接到另外一个板子的,软件我在IPNC 3.8的基础上没有修改 ,现在ping 不通,linux 内核下ping 127.0.0.1 可以,ping 其他的不行,rgmii 下TXC 有信号 ,但RXC 没有信号,读写PHY 寄存器都正常,
root: mount: mounting /dev/root on / failed: No such file or directory
Configuring network interfaces...
CPSW phy found : id is : 0x4dd072
PHY 0:01 not found
udhcpc (v1.13.2) started
Sending discover...
Sending discover...
PHY: 0:00 - Link is Up - 100/Full
Sending discover...
No lease, forking to background
done.
但ping 不通,这会是什么原因,?
qigong du1 说:我的PHY 接RJ45 接口至转接到另外一个板子的,
什么意思啊?注意以太网的走线不能太长。
phy 到RJ45 的线有10cm.是通过板对板连接器连接的!RJ45和phy 不在一个板子上!
Du Qigong,
10cm的线,再加上PCB上的走线,太长了吧,你能缩短试试么?