Other Parts Discussed in Thread: DP83869, AM3354
Hi SIr,
In one of the designs, we are using a DP83869 PHY chip with a 100FX FIber interface ( FIber module part number: AFBR-5803 ) .
There is some communication issue, So the "IT" recommends conducting Loop-back testing on the AM335X MAC to DP83869 PHY digital side.
Note - Hardware Strapp setting verified and conformed by "TI"
Please share more details about "how to perform Loop Back test Between the AM3354 MAC and DP83869 PHY digital RGMII interface"
We try to do the following steps to conduct the loopback test on the same
- For Loop-back testing, set the following PHY registers using MDI/MDO interface.
-
Set the register values in Linux UBOOT.
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Set the following register in the same order
-
BMCR set to -0X6100
-
,BIST_CONTROL set to 0X0004
2. after setting we pining- set IP as 12 and read the same IP.
- => setenv ipaddr 192.168.100.12
=> ping 192.168.100.12
link up on port 0, speed 100, half-duplex
Using ethernet@4a100000 deviceARP Retry count exceeded; starting again
ping failed; host 192.168.100.12 is not alive
Please confirm the following
- We got the Link-up massage, so the connection between the PHY and MAC is OK.
- Whether we got the same message while loopback. Or need to send any other data to check the Loop-Back.
- Whether we need to make any change in the address " eth0: ethernet@4a100000" We got the same address while connecting Coper add-on Card with Broadcom Phy chip
Pls find the screen short
Regards
Anees PK.
