Hi I am working on a project with cubie2 boards loading linux (Patricks nand boot loader patch, and kernel 3.3.0+ and ubuntu linaro 13.04 distro). I have met with stability issues (lock-up) and as I dug deeper, a number of other people have also complained about lockup issue relating to high DRAM clock (480 Mhz), as mentioned here
https://groups.google.com/forum/#!topic/cubieboard/9WMBFAL7JBE
and here:
https://groups.google.com/forum/#!topic/linux-sunxi/hw0yyWFVYgM
As mentioend, a lower value of DRAM clock seems to fix the problem, however I am not finding a way to do this (I am booting from NAND). I have edited script.bin, but it does not read the changed values. I also compiled a new boot.axf after putting 384Mhz values in the file boot1/core/start/eCon2_Start.c
default_clock = eGon2_clock_set(0, 384); default_clock = 384;
but to no avail as I moved the boot.axf file over, no change. I noticed binaries from core gets compiled into a boot1_nand.bin file, how is this used in the nand boot loading process?
I am working with the lichee-a20-dev branch.
Can anybody help? Thanks