https://community.nxp.com/t5/Layerscape/LS1046-RGMII-initialization/m-p/1448179#M10436 <P>I'm trying to run uboot in my ls1046 board. this board is developed by our colleagues. now, SGMII can work. but MAC3/MAC4 RGMII cannot work normally(seems link OK, but ping/tftp failed).&nbsp;</P><P>The PHY device is&nbsp;RX8010 which mode select by hardware pins.</P><P>I checked the RCW[EC1] /&nbsp;RCW[EC2] /RCW[EM1] / RCW[EM2] and the SCFT_ECGTXCMCR configuration. Any other issue that I missed?</P><P>following cited from uboot console&nbsp;</P><P>=&gt; tftpboot 82000000 u-boot.bin<BR />genphy_update_link mii_reg=7949<BR />drivers/net/phy/phy.c fm1-mac2 Waiting for PHY auto negotiation to complete......... TIMEOUT !<BR />fm1-mac2: Could not initialize<BR />genphy_update_link mii_reg=7949<BR />drivers/net/phy/phy.c fm1-mac3 Waiting for PHY auto negotiation to complete......... TIMEOUT !<BR />fm1-mac3: Could not initialize<BR />genphy_update_link mii_reg=796d<BR />genphy_parse_link mii_reg=796d<BR />Using fm1-mac4 device<BR />TFTP from server 192.168.10.101; our IP address is 192.168.10.100<BR />Filename 'u-boot.bin'.<BR />Load address: 0x82000000<BR />Loading: *<BR />ARP Retry count exceeded; starting again<BR />=&gt;&nbsp;</P> Sun, 24 Apr 2022 09:16:43 GMT linxx 2022-04-24T09:16:43Z https://community.nxp.com/t5/Layerscape/LS1046-RGMII-initialization/m-p/1448179#M10436 <P>I'm trying to run uboot in my ls1046 board. this board is developed by our colleagues. now, SGMII can work. but MAC3/MAC4 RGMII cannot work normally(seems link OK, but ping/tftp failed).&nbsp;</P><P>The PHY device is&nbsp;RX8010 which mode select by hardware pins.</P><P>I checked the RCW[EC1] /&nbsp;RCW[EC2] /RCW[EM1] / RCW[EM2] and the SCFT_ECGTXCMCR configuration. Any other issue that I missed?</P><P>following cited from uboot console&nbsp;</P><P>=&gt; tftpboot 82000000 u-boot.bin<BR />genphy_update_link mii_reg=7949<BR />drivers/net/phy/phy.c fm1-mac2 Waiting for PHY auto negotiation to complete......... TIMEOUT !<BR />fm1-mac2: Could not initialize<BR />genphy_update_link mii_reg=7949<BR />drivers/net/phy/phy.c fm1-mac3 Waiting for PHY auto negotiation to complete......... TIMEOUT !<BR />fm1-mac3: Could not initialize<BR />genphy_update_link mii_reg=796d<BR />genphy_parse_link mii_reg=796d<BR />Using fm1-mac4 device<BR />TFTP from server 192.168.10.101; our IP address is 192.168.10.100<BR />Filename 'u-boot.bin'.<BR />Load address: 0x82000000<BR />Loading: *<BR />ARP Retry count exceeded; starting again<BR />=&gt;&nbsp;</P> Sun, 24 Apr 2022 09:16:43 GMT https://community.nxp.com/t5/Layerscape/LS1046-RGMII-initialization/m-p/1448179#M10436 linxx 2022-04-24T09:16:43Z