Uboot run mmc dev 1: no sdcard present

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

my device is jetson-nano emmc 4G version with a sdcard slot, and i purpose to change default boot device to sdcard.

i have flashed my sdcard refer to
https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3231/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fflashing.html%23wwpID0E0PG0HA
and then plug into my device, but the bootloader still automatically boot from mmcblk0.
my first question is how to set mmcblk1 as default boot device?

i have tried to run bootcmd_mmc1 at uboot prompt, but prompt shown “no sdcard present”.
my second question is how to fix this error?

thanks

(sry for my bad english)

2
4

There is no such support yet.

One user gives out a patch but seems still has some bug.

5

thanks for reply.

may i keep this topic until be resolved?