Kajika

I have similar problem on the Tinkerboard 2S. I think this is due to the boot loader using a 'security' feature. Watching on the UART output gives : DDR Version 1.27 20211018 set center 1.0V [...] Boot1 Release Time: Jun 13 2022 09:58:34, version: 1.28 CPUId = 0x0 ChipType = 0x10, 631 mmc_set_bus_width: 1 EmmcClk: 375KHZ EmmcClk: 375KHZ mmc_set_bus_width: 8 EmmcClk: 200000KHZ [...] find part:uboot OK. first_lba:0x4000. find part:trust OK. first_lba:0x6000. LoadTrust Addr:0x6000 [...] LoadTrust Addr:0x7c00 mmc0:cmd18,0 mmc0:cmd12,0 mmc0:cmd18,0 mmc0:cmd12,0 Addr:0x6000 No find trust.img! LoadTrustBL error:-3 SecureMode = 0 SecureInit read PBA: 0x4 SecureInit read PBA: 0x404 SecureInit read PBA: 0x804 SecureInit read PBA: 0xc04 SecureInit read PBA: 0x1004 SecureInit read PBA: 0x1404 SecureInit read PBA: 0x1804 SecureInit read PBA: 0x1c04 SecureInit ret = -2, SecureMode = 0 I think "No find trust.img!" and the following "LoadTrustBL error:-3" explains the boot problem. I am going to fig this more. Maybe someone knows more about this boot-loader.

I am working with Tinkerboard 2s too, we have many of them here and some seems to die very easily. If you don't even have the red light the power may be fried. The on I killed have at least the led on but nothing seems to work and even the UART doesn't output anything. I'll give you update if I ever have something new but do not count on that.