The DDR configuration is modified when the Linux of the IMX8QXP is started. When the compiled flash.bin file is burnt using UUU, the following error is reported, and no information is displayed on the serial port.
The execution fails when the execution progress reaches 19% each time.
[HID(R):LIBUSB_ERROR_TIMEOUT ] SDPS: boot -f imx-boot-imx8qxpmek-sd.bin-flash

In addition, another compiled flash.bin file is available, as shown in the following figure.

The operations are performed according to the 《Bootloader Customization of the i.MX8X Board Development Board 4.14.98_ga》. Only the following modifications are made: The DDR configuration file of the SCFW and the DDR size in the U-boot. Does anyone know the cause? Am I missing something?
Thank you very much.