Hi NXP Team,
We have used imx8mq_evk for development purposes. Based on the imx8mq evk design we have developed a custom board.
Flash process:
Below are the processes which we have followed:
1. I have refer to the DDR calibration tool and doing a DDR stress test.
2. After the stress test successfully, I have generated lpddr.c file.
3. After generating lpddr.c stress file I have integrated this file into the u-boot.
4. Compile the u-boot and try to flash the u-boot using uuu tool.
Flash process Observation:
We got the below observation
- When I try to flash the u-boot in serial mode and if the UART1 port console connected then the flash process stuck at below lines:
Wait for Known USB Device Appear...
New USB Device Attached at 1:10
1:10>Start Cmd:SDP: boot -f bin1/imx-boot-emmc.bin-flash_evk
6400%1:10>Okay (0.354s)
New USB Device Attached at 1:10
1:10>Start Cmd:SDPV: delay 1000
1:10>Okay (1s)
1:10>Start Cmd:SDPV: write -f bin1/imx-boot-emmc.bin-flash_evk -skipspl
99%1:10>Okay (1.601s)
1:10>Start Cmd:SDPV: jump
6400%1:10>Okay (0.127s)
- When I removed the UART1 port console then I successfully flash the u-boot images.
Question:
1. So, the Question is why u-boot flash is not succeeded when I connected the UART com port to the system?
