Im taking a stab at trying to get a yocto linux build running on my RK1 and absolutely getting crushed trying to figure out how to get the DDR firmware blob for this thing... i cannot find any source for it online and the ubuntu image extraction from the uboot idbloader.img isnt working..
im pretty sure that the ddr map is rk3588_ddr_lp4_2112MHz_lp5_2400MHz_uart9_115200_v1.16.bin based on the ubuntu image but this exists literally nowhere