[参考译文] Linux/dra744：ds90uh925q 如何找到远程设备链接状态(如 ds90uh928q)？

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/617575/linux-dra744-how-does-ds90uh925q-found-the-remote-device-linked-status-such-as-ds90uh928q

工具/软件：Linux

您好！

我在我的 dra7xx Linux 板上使用 ds90uh925、但当我使用 ds90uh928插入 FPD 链接时、925无法找到已插入的远程设备。

我使用 i2cdump 转储所有寄存器发现了我的问题：

root@dra7xx-EVM：~# i2cdump -f -y 0 0x0c
未指定大小(使用字节数据访问)
    0 1 2 3 4 5 6 7 8 9 A b c d e f 0123456789abcdef
00：18 00 00 AB 8a 00 58 38 00 00 00 00 00 a0 00 00？？？？？？？？？？？x88？。。
10：00 00 0A 1c 00 00 Fe 5e A1 A5 00 00 00 00 00 00 00 00 00^………………………………………………………………
20：00 00 25 00 00 00 00 00 00 00 24 00 a0 00 00 00 00..% $？
30：03 10 00 00 00 08 34 00 0A 20 21 00 f0 00？？？4？ ！？？
40：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
50：2B 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +…
60：00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00……？…
70：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
90：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
A0：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
B0：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
C0：00 00 B8 00 08 00 40 00 00 00 00 00 00 00 00 00 00@……………………………………………………………
D0：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
E0：00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
F0：5F 55 42 39 32 35 00 00 00 00 00 00 00 00 00 _UB925 .........

根据数据表、当插入远程器件时、偏移量0x0c 处的寄存器值应为1。

但它不会。 那么、我想知道问题在哪里？

我已经测试了 VOUT+、VOUT-、DE、HS、VS、 PCLCK 引脚、所有这些都正常。