topic Re: IMX6: Ethernet PHY TX not working in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/IMX6-Ethernet-PHY-TX-not-working/m-p/649754#M99422 <HTML><HEAD></HEAD><BODY><P>We finally found the issue. <BR />Our design had not correctly connected the ENET_CRS_DV reset line from IMX-6q to the PHY.<BR />Once we fixed this, both tx/rx is working fine at 100BaseT now.</P><P></P><P></P><P>Problem solved.</P></BODY></HTML> Tue, 27 Sep 2016 05:38:19 GMT vicpandit 2016-09-27T05:38:19Z IMX6: Ethernet PHY TX not working https://community.nxp.com/t5/i-MX-Processors/IMX6-Ethernet-PHY-TX-not-working/m-p/649753#M99421 <HTML><HEAD></HEAD><BODY><P>We have a custom board that has IMX-6 connected to Micrel PHY (KSZ9031RNX).</P><P>This is a Magnatics less system that is 100BaseT.</P><P></P><P>Linux boots up fine, but the eth0 interface show activity only on RX side. all TX side is 0 bytes.</P><P>This leads to no dhcp address getting assigned to eth0.</P><P></P><P># ifconfig eth0<BR />eth0 Link encap:Ethernet HWaddr fa:fc:7e:7f:b5:92 <BR /> inet6 addr: fe80::f8fc:7eff:fe7f:b592/64 Scope:Link<BR /> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1<BR /> RX packets:220 errors:0 dropped:0 overruns:0 frame:0<BR /> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<BR /> collisions:0 txqueuelen:1000 <BR /> RX bytes:35227 (34.4 KiB) TX bytes:0 (0.0 B)</P><P></P><P>---</P><P>I read some threads where it was mentioned that skew rate adjustments could solve such problem.</P><P>Following are our skew register settings.&nbsp;</P><P></P><P>Could anyone point why TX side is not working? Any pointers would help us to make progress. We are stuck on this issue for around a month now.</P><P></P><P># ./mmd 2 4 <BR />0x0000<BR /># ./mmd 2 5<BR />0x0000<BR /># ./mmd 2 8<BR />0xf3ff</P></BODY></HTML> Mon, 26 Sep 2016 05:58:42 GMT https://community.nxp.com/t5/i-MX-Processors/IMX6-Ethernet-PHY-TX-not-working/m-p/649753#M99421 vicpandit 2016-09-26T05:58:42Z Re: IMX6: Ethernet PHY TX not working https://community.nxp.com/t5/i-MX-Processors/IMX6-Ethernet-PHY-TX-not-working/m-p/649754#M99422 <HTML><HEAD></HEAD><BODY><P>We finally found the issue. <BR />Our design had not correctly connected the ENET_CRS_DV reset line from IMX-6q to the PHY.<BR />Once we fixed this, both tx/rx is working fine at 100BaseT now.</P><P></P><P></P><P>Problem solved.</P></BODY></HTML> Tue, 27 Sep 2016 05:38:19 GMT https://community.nxp.com/t5/i-MX-Processors/IMX6-Ethernet-PHY-TX-not-working/m-p/649754#M99422 vicpandit 2016-09-27T05:38:19Z