Okay. So here is the update. RPMSG does not work on the kernel level for Seeed Linux i have verified with the default image which one can download from odyssey wiki page.
Next I tried with Seed’s Kernel : stm32-4.19.y and Seed’s Uboot: v2018.11-stm32mp-r2.2 Got below output.
U-Boot SPL 2018.11-stm32mp-r2.2 (May 04 2021 - 12:50:45 +0530)
Model: STMicroelectronics STM32MP157C-DK2 Discovery Board
RAM: DDR3-1066/888 bin G 1x4Gb 533MHz v1.44
stpmic1_read: failed to read register 0x27 : -110ddr power init failed
If used with new U-boot which is not Seeed’s Uboot I get:
U-Boot SPL 2020.10-stm32mp-r1 (May 04 2021 - 10:54:10 +0530)
Model: STMicroelectronics STM32MP157C-DK2 Discovery Board
stpmic1_read: failed to read register x : 32stpmic1_read: failed to read register x : 24z
stpmic1_read: failed to read register x : 39ddr power init failed
For experimentation purpose , i just copied the default compiled dtb : stm32mp1-seeed-npi-base.dtb to /boot directory just to see if that solves the issue. Also made sure theentry was set to correct dtb file in extlinux/extlinux.conf .
@Baozhu @166291 I do not expected to be spoon fed. But i am really confused as to what exactly will make this board boot. I would really appreciate the directions now if this means to manually clone repos , cherry pick apply patches to make it work.