# Debian bookworm: RJ45 ethernet interface not working **URL:** \ **Category:** NXP LX2160\ **Created:** [August 1, 2022, 10:14am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410 "2022-08-01T10:14:25Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [August 1, 2022, 10:14am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/1 "2022-08-01T10:14:25Z")
I recently bought a Honeycomb LX2K board and am unable to get the RJ45 ethernet port running. The four 10G SFP+ ethernet ports (dpmac{7…10}) work just fine. Board: CEX7 rev2.1 / ClearFog rev1.3 UEFI: lx2160acex7\_2000\_700\_3200\_8\_5\_2\_flexspi\_nor\_ee5c233 OS: Debian bookworm Kernel: 5.18.0-2-arm64 Debian 5.18.5-1 (2022-06-16) The kernel spits out errors trying to probe the interface: ```auto [7.671288] fsl_dpaa2_eth dpni.0: Adding to iommu group 1 [8.438928] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): phylink_fwnode_phy_connect() = -110 [8.448578] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): Error connecting to the MAC endpoint: -ETIMEDOUT [8.782403] fsl_dpaa2_eth dpni.0: fsl_mc_driver_probe failed: -110 [8.788585] fsl_dpaa2_eth: probe of dpni.0 failed with error -110 ``` Do i need additional patches to mainline stable kernels to get this port up? UPDATE: I built a kernel (5.18.2-cex7-arm64) with sources from branch `linux-5.18.y-cex7` from the SolidRun `linux-stable` GitHub repository. No difference with the RJ45 ethernet port, but at least the SD card and the eMMC now get detected by the OS. Kernel still reports: ```auto [9.052559] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): phylink_fwnode_phy_connect() = -110 [9.062211] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): Error connecting to the MAC endpoint: -ETIMEDOUT [9.378591] fsl_dpaa2_eth dpni.0: fsl_mc_driver_probe failed: -110 [9.384772] fsl_dpaa2_eth: probe of dpni.0 failed with error -110 ``` ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [August 1, 2022, 12:53pm UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/2 "2022-08-01T12:53:42Z")
Do you have the phy driver enabled in your kernel config? It is an AR8035 ---
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [August 1, 2022, 1:52pm UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/3 "2022-08-01T13:52:25Z")
Currently i have set `CONFIG_AT803X_PHY=m` in my kernel config. Module is loaded and shows up in `lsmod` output. Does it need to be baked into the kernel so it is available during early initialization? ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [August 1, 2022, 2:14pm UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/4 "2022-08-01T14:14:27Z")
it shouldn’t. Does the network interface work in edk2 shell? ---
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [August 1, 2022, 3:45pm UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/5 "2022-08-01T15:45:45Z")
I think this is what you want to see: ```auto => mii device MII devices: 'mdio@8b96000' Current device: 'mdio@8b96000' => mii info 8b96000 PHY 0x00: OUI = 0x1374, Model = 0x07, Rev = 0x07, 1000baseX, FDX => mii dump 8b96000 0 0. (3100) -- PHY control register -- (8000:0000) 0.15 = 0 reset (4000:0000) 0.14 = 0 loopback (2040:2000) 0. 6,13 = b01 speed selection = 100 Mbps (1000:1000) 0.12 = 1 A/N enable (0800:0000) 0.11 = 0 power-down (0400:0000) 0.10 = 0 isolate (0200:0000) 0. 9 = 0 restart A/N (0100:0100) 0. 8 = 1 duplex = full (0080:0000) 0. 7 = 0 collision test enable (003f:0000) 0. 5- 0 = 0 (reserved) ``` But there is also this output: ```auto fsl_board_late_init Net: Could not get PHY for mdio@8b96000: addr 1 ``` I also tried to boot the ubuntu 20.04 image `lx2160acex7_2000_700_3200_8_5_2-f57e117` from SD card. Shows same output in kernel:’ ```auto [5.121823] fsl_dpaa2_eth dpni.0: Adding to iommu group 2 [5.849953] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): phylink_fwnode_phy_connect() = 9 [5.859518] fsl_dpaa2_eth dpni.0 (unnamed net_device) (uninitialized): Error connecting to the MAC endt [5.919987] fsl_dpaa2_eth dpni.0: fsl_mc_driver_probe failed: -19 ``` All four 10G interfaces work, the 1G RJ45 port does not. Is this a hardware defect? ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [August 2, 2022, 4:53am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/6 "2022-08-02T04:53:19Z")
I am checking on this. I will follow up with you in a bit. ---
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [August 3, 2022, 10:22am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/7 "2022-08-03T10:22:55Z")
The MC firmware on the board is a bit outdated. Is there some way i can flash the new 10.34.0 firmware release to the MC from linux or the sd card and see if that helps? References: [https://github.com/NXP/qoriq-mc-binary/tree/mc\_release\_10.34.0](https://github.com/NXP/qoriq-mc-binary/tree/mc_release_10.34.0) [https://community.nxp.com/t5/Layerscape-Knowledge-Base/LX2160ARDB-How-to-update-MC-firmware-DPC-and-DPL-images-on-SD/ta-p/1150809](https://community.nxp.com/t5/Layerscape-Knowledge-Base/LX2160ARDB-How-to-update-MC-firmware-DPC-and-DPL-images-on-SD/ta-p/1150809) ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [August 3, 2022, 10:26am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/8 "2022-08-03T10:26:24Z")
That firmware is built into the edk2 firmware file. However it would only change compatiblity with the SFP+ functionality. The RJ45 has proven to be functional with all previous versions of the firmware. The issue you are seeing has nothing to do with the network packet processor, it is the fact that your PHY is not being discovered on the mdio bus. ---
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [August 3, 2022, 10:40am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/9 "2022-08-03T10:40:59Z")
Should i check the board for visual damages like missing/stripped of capacitors, solder paste blobs, etc. around U20 ? EDIT: Connection between PHY and RJ45 seems fine, LEDs start blinking with connected cable. So the PHY is at least powered up and reactive. ---
**Author:** ![daitzer](https://avatars.discourse-cdn.com/v4/letter/d/47e85d/32.png) [@daitzer](https://community.solid-run.com/u/daitzer)\ **Post date:** [September 5, 2023, 8:32am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/10 "2023-09-05T08:32:05Z")
[SOLVED] My co-worker found the issue. Capacitor C119 was missing on Board (never soldered on in factory). Unfiltered Voltage regulator output peaking at ~3.5V destroyed the PHY chip on the SOM. ---
**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\ **Post date:** [September 5, 2023, 10:56am UTC](https://community.solid-run.com/t/debian-bookworm-rj45-ethernet-interface-not-working/410/11 "2023-09-05T10:56:59Z")
Can you please report this to [support@solid-run.com](mailto:support@solid-run.com) so it can be reported to the QA team? If you took any pictures please attach them. Thanks