AnsweredAssumed Answered

the ethernet does not work if the linux console is disabled

Question asked by jean-françoistrap on Jan 15, 2018
Latest reply on Jan 15, 2018 by igorpadykov


when I delete the console in UBoot (console=NULL) and restart my target, the Ethernet ports does not work.
It is important to turn off/on the power supply for the restart.

my research allowed me to understand that it is the registry CCM_CCGR0 that is not well configured.

When the eternet is ok: CCM_CCGR0 =  0xC0C0330F

When the eternet does not work: CCM_CCGR0 = 0xC0C0030F


dmesg:  " fec 2188000.ethernet eth0: Unable to connect to phy "


But, I don't know why and how to correct this difference.



Kernel Linux: 4.14.11


Thank you for your help.