The device is brought into the recovery mode(by shorting the pins). The following command is run : “./imx_uart -n /dev/ttyUSB0 mx6ull_usb_work.conf u-boot.imx”. Ideally the board(in recovery mode) should respond and then boot.
The UART A of the viola board is used , with the RTS /CTS pins shorted.
The output is the following :
trailing slash == 0x5579de0d2161:/imx_uart
checking with conf_path /usr/etc/imx-loader.d/
checking with base_path ./
config file <.//mx6ull_usb_work.conf>
starting associating phase…
magic missmatch, response was 0x00000000
From the above i can infer that the board is not responding.
When not in recovery mode , if i run the command there is no mismatch and the board seems to respond.(But the u-boot does not load and by my understanding it should not).
Does the IMX6ULL support UART-boot in recovery mode ?
Is there any other connections or settings which must be performed for the UART-Boot to function ?
When the board is in recovery mode and the command “./imx_usb u-boot-nand.imx” is run , the board boots and hence the USB option works.
The Subject Boot over UART in Recovery mode, was discussed in R&D Team and we concluded that Toradex won’t provide and work on this feature since it is recommended by Toradex to use USB OTG connection to recover the iMX(X)s modules.
We are sorry for the delayed answer and any inconvenience.