That seems to be the emmc version which is booting… Change the bootswitch? Or is the emmc version accidentally written to sdcard? Or perhapse the sdcard is not bootable. Do you get the same result with sdcard removed?
This looks like DRAM calibration has failed. I’ve seen this before when
building ARM Trusted Firmware with the wrong DRAM calibration binaries (1ddr vs. 2ddr/fly-by)
using cpufreq to set CPU voltage to anything less than 1.0V before reboot which breaks DRAM calibration on reboot
broken power supply or otherwise unstable 12V supply to the board
I guess you would see similar things in case something on the board broke (hardware fault), could be voltage regulator or oscillator, or the SoC or DRAM chips themselves…
checked several power supplies, no change. it happens that the board starts up if you press reset several times. what tests can be carried out to check what is the problem? check SoC and DRAM?
First of all, verify that the board boots with SinoVoip’s images, as that is supposedly what they are using for QA. If the board also doesn’t boot with SinoVoip’s SD-card image, then you should probably claim it as a warranty case and receive a new one.
Anyway, you say you are using a sdcard image, but the log shows an emmc image. So the log does not respond to the image you have downloaded. This way you can keep trying without results. First try to boot the image you write to actually start booting.