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第二，通过0X0001读的寄存器值看起来自动协商没有完成，所以需要确认下 link partner是否支持自动协商，是否已经enable此功能？ 另外，这几个寄存器x0004, 0x0005 和0x0010读取的值是什么？
Please confirm that the power supply filtering caps are present in the schematic as shown in "Figure 36. Power Connections". Also although it looks like you are able to access registers with no problem because 0x0002 and 0x0003 reads are correct, the MDC pin does not require a pullup resistor, only MDIO does.
Based on your screenshot of register 0x0001 contents it looks like the auto-negotiation process was not completed, can you confirm the link partner is also capable of auto-negotiation and is set for this? Also please send me the read back value of register 0x0004, 0x0005 and 0x0010.
你好，十分感谢您的帮助！！
1）首先我确定硬件没有问题因为，我用其他操作系统已经验证过该硬件没有问题已经正常通讯，当时采用的是RTEMS操作系统，我现在是想实现linux的移植出现的问题。
2）根据您说的这个寄存器值，我把对应的0x00~0x1c寄存器状态都读了一下如下：
register 0x00 is 0x3100
register 0x01 is 0x7849
register 0x02 is 0x2000
register 0x03 is 0xa240
register 0x04 is 0x1e1
register 0x05 is 0x0
register 0x06 is 0x4
register 0x09 is 0x0
register 0x0a is 0x100
register 0x0d is 0x0
register 0x0e is 0x0
register 0x0f is 0x0
register 0x12 is 0x0
register 0x13 is 0x800
register 0x14 is 0x0
register 0x15 is 0x0
register 0x16 is 0x100
register 0x17 is 0x2c1
register 0x18 is 0x400
register 0x19 is 0x801f
register 0x1a is 0x0
register 0x1b is 0x7d
register 0x1c is 0x5ee
