Norfolk

I see in your log:
[ 15.439789] sun7i-dwmac 1c50000.ethernet end0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 15.466497] sun7i-dwmac 1c50000.ethernet end0: PHY [stmmac-0:01] driver [RTL8211E Gigabit Ethernet] (irq=POLL) [ 15.677165] sun7i-dwmac 1c50000.ethernet end0: Failed to reset the dma [ 15.758481] sun7i-dwmac 1c50000.ethernet end0: stmmac_hw_setup: DMA engine initialization failed [ 15.772254] sun7i-dwmac 1c50000.ethernet end0: __stmmac_open: Hw setup failed If I look at my bpi:
root@banlipi:~# dmesg | grep ethernet [ 3.767952] sun7i-dwmac 1c50000.ethernet: IRQ eth_wake_irq not found [ 3.774414] sun7i-dwmac 1c50000.ethernet: IRQ sfty not found [ 3.780287] sun7i-dwmac 1c50000.ethernet: PTP uses main clock [ 3.894850] sun7i-dwmac 1c50000.ethernet: Version ID not available [ 3.902941] sun7i-dwmac 1c50000.ethernet: DWMAC1000 [ 3.907950] sun7i-dwmac 1c50000.ethernet: No HW DMA feature register supported [ 3.915196] sun7i-dwmac 1c50000.ethernet: TX Checksum insertion supported [ 3.922008] sun7i-dwmac 1c50000.ethernet: Normal descriptors [ 3.927689] sun7i-dwmac 1c50000.ethernet: Ring mode enabled [ 5.766296] sun7i-dwmac 1c50000.ethernet end0: renamed from eth0 [ 19.418540] sun7i-dwmac 1c50000.ethernet end0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 19.465510] sun7i-dwmac 1c50000.ethernet end0: PHY [stmmac-0:01] driver [RTL8211E Gigabit Ethernet] (irq=POLL) [ 19.476982] sun7i-dwmac 1c50000.ethernet end0: No Safety Features support found [ 19.484490] sun7i-dwmac 1c50000.ethernet end0: RX IPC Checksum Offload disabled [ 19.491897] sun7i-dwmac 1c50000.ethernet end0: No MAC Management Counters available [ 19.508289] sun7i-dwmac 1c50000.ethernet end0: PTP not supported by HW [ 19.514967] sun7i-dwmac 1c50000.ethernet end0: configuring for phy/rgmii-id link mode [ 23.717977] sun7i-dwmac 1c50000.ethernet end0: Link is Up - 1Gbps/Full - flow control rx/tx root@banlipi:~# uname -a Linux banlipi 6.18.35-current-sunxi #1 SMP Tue Jun 9 10:28:53 UTC 2026 armv7l GNU/Linux So no DMA related problem. The AI advise is nonsense IMO; There might some (longterm) hidden bug/issue in the sunxi kernel when running on bananapi as mine usually hangs after a few days with a kernel paging issue, root cause I don't now. BUT, now tha I am challenging this with 24/7 kernellogging via serial console, 'it does not wanna crash':
root@banlipi:~# uptime 14:32:05 up 7 days, 18:13, 1 user, load average: 0.07, 0.14, 0.12 I must say only thing it does is read out the AXP PMU values every 10s and pushes that into influxDb. Maybe I should hook up a SATA SSD or HDD and see if I can repeat.
 
Maybe doe upgrade, so you get newer kernel (6.18.35): 
sudo apt update && sudo apt full-upgrade -y