> Date: Thu, 5 Feb 2026 14:46:37 +0100 > From: Alexandr Nedvedicky <[email protected]> > > Hello, > > I'm sorry can not provide dmesg output. > > This is the device I have [1], it's NanoPC-T6 > > I could install 7.8 following guide here [2]. I was using > MicroSD card. I did create image: > dd if=miniroot78.img of=/dev/rsd3c bs=1m > dd if=/usr/local/share/u-boot/nanopc-t6-rk3588/u-boot-rockchip.bin \ > of=/dev/sd3c seek=64 > I did install 7.8 to internal emmc disk. To boot the box after install > I had to keep MicroSD card inserted, thinking I will eventually figure > out later how to get it booting without MicroSD. > > The next step was to try to upgrade to snapshot. Was doing > yesterday so snapshot had to be fairly recent. > > the upgrade process was smooth, machine then rebooted and did > not came back. > > this is what I see on serial console when connecting from linx > where 1500000 speed is supported: > > --------8<---------------8<---------------8<------------------8<-------- > DDR 9fa84341ce typ 24/09/06-09:51:11,fwver: v1.18 > ch0 ttot10 > ch1 ttot10 > ch2 ttot10 > ch3 ttot10 > ch0 ttot16 > LPDDR4X, 2112MHz > channel[0] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB > ch1 ttot18 > channel[1] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB > ch2 ttot16 > channel[2] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB > ch3 ttot16 > channel[3] BW=16 Col=10 Bk=8 CS0 Row=16 CS1 Row=16 CS=2 Die BW=16 Size=2048MB > Manufacturer ID:0x1 > DQS rds:l0,l0 > CH0 RX Vref:26.3%, TX Vref:20.8%,19.8% > DQ rds:l0 l0 h3 h1 l1 h2 h1 h1, l0 h2 l0 h2 l2 l0 h1 h3 > > DQS rds:h1,h1 > CH1 RX Vref:25.0%, TX Vref:21.8%,21.8% > DQ rds:h1 l0 l0 h2 h1 h2 h2 h1, h1 h5 l1 l0 h7 h1 h3 h3 > > DQS rds:l1,h1 > CH2 RX Vref:25.4%, TX Vref:20.8%,21.8% > DQ rds:h2 h7 h6 h1 l0 h2 l0 h1, l0 h2 h4 h2 l0 l0 l0 l0 > > DQS rds:l0,h1 > CH3 RX Vref:29.3%, TX Vref:20.8%,20.8% > DQ rds:h2 h2 h2 h1 h2 h1 l0 h3, h2 h1 l0 h2 h6 h2 h2 h2 > > stride=0x2, ddr_config=0x4 > hash ch_mask0-1 0x20 0x40, bank_mask0-3 0xa00 0x1400 0x2800 0x0, rank_mask0 > 0x401000 > change to F1: 528MHz > ch0 ttot10 > ch1 ttot10 > ch2 ttot10 > ch3 ttot10 > change to F2: 1068MHz > ch0 ttot12 > ch1 ttot14 > ch2 ttot12 > ch3 ttot12 > change to F3: 1560MHz > ch0 ttot14 > ch1 ttot16 > ch2 ttot14 > ch3 ttot14 > change to F0: 2112MHz > ch0 ttot16 > ch1 ttot18 > ch2 ttot16 > ch3 ttot16 > out > --------8<---------------8<---------------8<------------------8<-------- > > I suspect machine stops because it does not know how to boot from > MicroSD card. So it's missing u-boot. It's whole new adventure so > I'm kind of lost. Will be glad for any pointer to guides on how to > unlock/restore the box back to factory settings.
Something goes wrong here. Because if you're using the U-Boot from OpenBSD, even the DDR training ouptut should run at 115200 and not 1500000.
