Rock Pi 4C eMMC Boot Issues

Hey Community,

I’m attempting to boot via eMMC my Talos using the following guide:

Everything works fine if I’m using SD cards however I wanted to boot from eMMC and I hit a snag, I’ve snatched the serial logs

U-Boot TPL 2021.10-rc3 (Sep 30 2021 - 16:37:58)
Channel 0: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB
Channel 1: LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16 Size=2048MB
256B stride
lpddr4_set_rate: change freq to 400000000 mhz 0, 1
lpddr4_set_rate: change freq to 800000000 mhz 1, 0
Trying to boot from BOOTROM
Returning to boot ROM...

U-Boot SPL 2021.10-rc3 (Sep 30 2021 - 16:37:58 +0000)
Trying to boot from MMC1
Card did not respond to voltage select! : -110
spl: mmc init failed with error: -95
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

I did try and connecting pins 23/25 but to no avail. What is my best option going forward to fix this issue?


Use Armbian bootloaders as recommended by Talos install document. Radxa has little to do with software development and support where you have troubles with. Next hardware choose wisely.

Thanks for the response, can confirm that was the solution unfortunately.

You can make a four figure donation to Armbian and software team behind software you are using will take a look and you might also like to get a long term subscription to make sure someone will be around to make sure regression won’t happen on upgrades.

You can also wait that problem will fix itself automagically and educate that you will be able to fix problems on your own. Sources exists.

Miracles sometimes happens, usually not.