2414789_en-US

[#1]

I.MX6ULL ENET1 can't recv data from phy

I.M6ULL + 4.19.35 + KSZ 8081rnb 

We have 300 units of this device deployed on site. Under most conditions they operate normally and the business/services work as expected. However, we occasionally find that the services become unreachable. Upon investigation, we observed that eth1 (ENET1) stops receiving packets, even though its LINK LED remains solid on and the ACT LED sometimes blinks.

In addition, we verified that after unplugging and re-plugging the Ethernet cable on ENET1 once, the network returns to normal. Restarting the device also restores it. Could you please help analyze the possible root cause—is it in the PHY or the MAC?

The register values read from it are as follow:

The list of registers we read includes both MAC and PHY registers. Since it is quite long, it is listed on the following page.

Command: phy eth1 0x1 to read PHY register 1.

memtool 

i.MX6ULLinuxRe: I.MX6ULL ENET1 can't recv data from phy

Hi @240697273 

The list of registers we read includes both MAC and PHY registers. Since it is quite long, it is listed on the following page.

>>>i could not find these registers. please resend it.

B,R