first data training fail!
col :11
col :10
chn 0 col 10, row 16
sdram_init done
DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=180
DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=180
DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=180
DTONE=0x1, DTERR=0x0, DTIERR=0x0, DTPASS=0x4, DGSL=1 extra clock, DGPS=180
ZERR=0, ZDONE=0, ZPD=0x0, ZPU=0x0, OPD=0x0, OPU=0x0
DRV Pull-Up=0xb, DRV Pull-Dwn=0xb
ODT Pull-Up=0x2, ODT Pull-Dwn=0x2

U-Boot SPL 2021.01-armbian (Feb 05 2022 - 10:21:35 +0300)
Trying to boot from BOOTROM
Returning to boot ROM...


U-Boot 2021.01-armbian (Feb 05 2022 - 10:21:35 +0300)

Model: RK3188 rbox
DRAM:  2 GiB
MMC:   dwmmc@10214000: 0
In:    serial@20064000
Out:   serial@20064000
Err:   serial@20064000
Model: RK3188 rbox
Net:   Net Initialization Skipped
No ethernet found.
Hit any key to stop autoboot:  0
starting USB...
Bus usb@10180000: USB DWC2
Bus usb@101c0000: USB DWC2
scanning bus usb@10180000 for devices... 1 USB Device(s) found
scanning bus usb@101c0000 for devices... unable to get device descriptor (error=-22)
2 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

Device 0: unknown device
MMC Device 1 not found
no mmc device at slot 1
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
363 bytes read in 10 ms (35.2 KiB/s)
1:      Armbian
Retrieving file: /boot/uInitrd
7357675 bytes read in 2013 ms (3.5 MiB/s)
Retrieving file: /boot/zImage
6819336 bytes read in 1866 ms (3.5 MiB/s)
append: root=UUID=50842296-a574-4d90-8947-bf79580a6670 console=uart8250,mmio32,0x20064000 console=tty0 coherent_pool=2M rootflags=data=writeback rw no_console_suspend=1 consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0 bootsplash.bootfile=bootsplash.armbian
Retrieving file: /boot/dtb/rk3188-rbox-cs968.dtb
28737 bytes read in 19 ms (1.4 MiB/s)
## Loading init Ramdisk from Legacy Image at 64000000 ...
   Image Name:   uInitrd
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    7357611 Bytes = 7 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 61f00000
   Booting using the fdt blob at 0x61f00000
   Loading Ramdisk to 6f8fb000, end 6ffff4ab ... OK
   Loading Device Tree to 6f8f0000, end 6f8fa040 ... OK

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.10.96-rk3188 (root@vbox) (arm-linux-gnueabihf-gcc (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36)) 8.3.0, GNU ld (GNU Toolchain for the A-profile Architecture 8.3-2019.03 (arm-rel-8.36)) 2.32.0.20190321) #trunk SMP Sat Feb 5 11:11:22 MSK 2022
[    0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: RK3188T CS968
[    0.000000] earlycon: uart8250 at MMIO32 0x20064000 (options '')
[    0.000000] printk: bootconsole [uart8250] enabled
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 256 MiB at 0xd0000000
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000060000000-0x000000008fffffff]
[    0.000000]   HighMem  [mem 0x0000000090000000-0x00000000dfffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000060000000-0x00000000dfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000060000000-0x00000000dfffffff]
[    0.000000] percpu: Embedded 16 pages/cpu s33228 r8192 d24116 u65536
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 522560
[    0.000000] Kernel command line: root=UUID=50842296-a574-4d90-8947-bf79580a6670 console=uart8250,mmio32,0x20064000 console=tty0 coherent_pool=2M rootflags=data=writeback rw no_console_suspend=1 consoleblank=0 fsck.fix=yes fsck.repair=yes net.ifnames=0 bootsplash.bootfile=bootsplash.armbian
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 1791744K/2097152K available (10240K kernel code, 783K rwdata, 3328K rodata, 1024K init, 307K bss, 43264K reserved, 262144K cma-reserved, 1048576K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000]  Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 30 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] L2C: DT/platform modifies aux control register: 0x02050000 -> 0x32050000
[    0.000000] L2C-310 erratum 769419 enabled
[    0.000000] L2C-310 enabling early BRESP for Cortex-A9
[    0.000000] L2C-310 full line of zeros enabled for Cortex-A9
[    0.000000] L2C-310 ID prefetch enabled, offset 1 lines
[    0.000000] L2C-310 dynamic clock gating enabled, standby mode enabled
[    0.000000] L2C-310 cache controller enabled, 16 ways, 512 kB
[    0.000000] L2C-310: CACHE_ID 0x4100c0c8, AUX_CTRL 0x76050001
[    0.000000] random: get_random_bytes called from start_kernel+0x5c8/0x788 with crng_init=0
[    0.000000] clocksource: rk_timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000009] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[    0.009282] Console: colour dummy device 80x30
[    0.014198] printk: console [tty0] enabled
[    0.018729] printk: bootconsole [uart8250] disabled