H20 Box with RK3228A bricked

[NiTr0]

I've updated multiboot image at this link https://drive.google.com/file/d/13X2-9DVrrnDyDg1zd_mkGOs3SCZV84Wl/view?usp=sharing , now it boots OK.

[gpsvitor]

hello, i have a bricked h20 box too.

I can't connect it to my pc to make a recover... (the device don't appear on the device manager)

I try a usb male to male, and push reset button, the resistors to make it maskrom, but the pc never see the box...

I try the cable with a hdmi to usb and work ok...

the serial log is

DDR Version V1.10 20190926
In
ID:0xFFF
330MHz
LPDDR3
Bus Width=32 Col=10 Bank=8 Row=15 CS=2 Die Bus-Width=32 Size=2048MB
mach:14
rd addr 0xC0000000 = 0xFFFF
ERR

 

Anyone can help me?

Thanx

 

[NiTr0]

try to short ROM data lanes that are passed via 51R resistors (8 pcs or 2x 4-resistors assembles hear eMMC). I just shorted any 2 lines between different assembles by tweezer.

Edited November 18, 2023 by NiTr0

[Godziller]

My board keep entering maskrom mode instead nothing changes even if i flash multiboot on SD or if i erase flash. I think i have an hardware problem at this point...

[NiTr0]

your board enters to maskrom, or boots from EMMC (ddrbin is on eMMC)?

[jock]

@gpsvitor you clearly need to go in maskrom mode shorting the emmc clock pin to ground.

You installed armbian on emmc without testing first on sdcard, which is something I always suggest to do.

 

Perhaps your board has 1.5gb of ram like @NiTr0's one?

In such case you will need an image with an updated ddrbin, which is the component failing in your situation.

If you get in maskrom mode, just erase the flash; don't try to reinstall any armbian image because they will all fail and wait for an updated image.

[NiTr0]

try this image: https://drive.google.com/file/d/1bcOfc-df_84-qa0-SQjrQnKpzfEGrdsd/view?usp=sharing

 

I've updateed ddrbin (I manually placed  u-boot-rk322x-with-spl.bin with ddrbin 1.11 at 0x8000 in image) and it boots OK on my board

[gpsvitor]

Hello, i already was able to start the maskrom...

At some point i was able to boot the system but nothing on the hdmi...

 

[    5.743042]   #0: DW-I2S-HDMI
[    5.743048]   #1: SPDIF
[    5.945069] ttyS2 - failed to request DMA, use interrupt mode
[    5.945630] mmcblk2boot1: mmc2:0001 QN16BB partition 2 4.00 MiB
[    5.946326] mmcblk2rpmb: mmc2:0001 QN16BB partition 3 4.00 MiB
[    5.963373]  mmcblk2: p1
[    5.980205] squashfs: SQUASHFS error: Xattrs in filesystem, these will be ignored
[    5.987783] squashfs: SQUASHFS error: unable to read xattr id index table
[    6.001110] VFS: Mounted root (squashfs filesystem) readonly on device 179:3.
[    6.014907] devtmpfs: mounted
[    6.019533] Freeing unused kernel memory: 784K
[    6.024032] This architecture does not have kernel memory protection.
[    6.206919] vendor storage:20190527 ret = 0
[    7.638609] random: dropbear: uninitialized urandom read (32 bytes read, 24 bits of entropy available)

Debian GNU/Linux 10 multitool ttyS2

multitool login: root (automatic login)

sh: 1: cannot create /run/motd.dynamic.new: Read-only file system

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
-bash: cannot set terminal process group (-1): Inappropriate ioctl for device
-bash: no job control in this shell
root@multitool:~#)

 

but now i am stucked to maskrom again after try restore the original firmware...

no serial output @115200...

 

I lost the complete serial log...

my board have the ddr and emmc together...

[jock]

@gpsvitor perhaps your multitool copy is an old version. Download a new copy from the first page of this thread

[gpsvitor]

I will try it and report... thanx for youre help

 

[NiTr0]

here's stable options for dtb overlays: overlays=emmc emmc-pins emmc-hs200 ddr3-528 led-conf7

 

maybe ddr3 will work even on higher frequency (660 or 800mhz) but in stock it works at 600mhz, so I decided to set it at nearest lower value (I don't need much CPU/GPU power in this box, but factory 330MHz seems to be too low)

[gpsvitor]

At this point the board do not accept any more software... i will put the project to a halt... isn't 100% sutable to my project needs... i'm very thanfull to everybody... thanks