Hello! Can you share the instructions and sources code, how to assemble a U-boot for an Amlogic A311D2? Ready u-boot from Khadas does not work on this board. 
	U-Boot 2019.01-gae8012faf05-dirty (May 19 2024 - 19:21:34 +0000) 
	 
 
DRAM: 8 GiB
Relocation Offset is: dfd51000
Relocating to dfd51000, new gd at d9d405c0, sp at d9d405b0
board init
watchdog disable
gpio: pin GPIOT_15 (gpio 106) value is 1
	 
	 
	It includes a pin that cannot be turned on, the board hangs on this moment.