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Ethernet connectivity on Toradex Verdin i.MX 8M Plus Dahlia Board   ________________________________________________________________________ Applicable Environment ________________________________________________________________________ Topic: Toradex Verdin i.MX 8M Plus Dahlia BSP, Ethernet, io-pkt SDP: 7.1.0 Target: AArch64 ________________________________________________________________________ Issue ________________________________________________________________________ There is currently a known issue with Ethernet when booting via SD card using the Toradex Verdin i.MX 8M Plus Dahlia BSP (7.1 BuildID 7 - August 17, 2023). You will see that the driver is loaded, however, it is unable to get an IP address assigned to the interface via dhcp, neither does statically setting an IP address on the interface work. ________________________________________________________________________ Recommendation ________________________________________________________________________ There was an issue with the KSZ9131 PHY initialization when booting via the SD card. It was observed that when u-boot loads the ifs via tftp, the dwc0 interface is able to get an IP address assigned and works as expected. u-boot initializes the network device on the board when tftp is run or a dhcp command is run on the u-boot prompt. Please use this workaround if you require Ethernet connectivity. Below are the steps that have been verified on the target when booting via tftp (using default gateway 192.168.10.1): 1. On u-boot command prompt: ---------- Verdin iMX8MP TEZI # setenv serverip 192.168.10.120 Verdin iMX8MP TEZI # setenv ipaddr 192.168.10.140 Verdin iMX8MP TEZI # ping 192.168.10.120 Using ethernet@30bf0000 device host 192.168.10.120 is alive Verdin iMX8MP TEZI # tftp 0x40800000 ifs-imx8mp-verdin.bin Using ethernet@30bf0000 device TFTP from server 192.168.10.120; our IP address is 192.168.10.140 Filename 'ifs-imx8mp-verdin.bin'. Load address: 0x40800000 Loading: ######################################################## ... 7.2 MiB/s done Bytes transferred = 10139444 (9ab734 hex) Verdin iMX8MP TEZI # go 0x40800000 ## Starting application at 0x40800000 ... board_smp_num_cpu: 4 cores board_smp_num_cpu: 4 cores board_smp_num_cpu: 4 cores board_smp_num_cpu: 4 cores ... ---------- Below is the uboot KSZ9131 phy init code for reference: https://git.toradex.com/cgit/u-boot-toradex.git/tree/board/toradex/verdin-imx8mp/verdin-imx8mp.c?h=toradex_imx_v2020.04_5.4.24_2.1.0#n124 If you require an official patch, please contact your QNX rep to discuss options. The reference number for the issue is J2956364. ________________________________________________________________________ NOTE: This entry has been validated against the SDP version listed above. Use caution when considering this advice for any other SDP version. For supported releases, please reach out to QNX Technical Support if you have any questions/concerns. ________________________________________________________________________ Related Attachments  None Found

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