Hi Prithvi
right, prebuilt images are specially prepared and built for reference boards
and may not work with custom boards. For custom boards
it is necessary to run ddr test i.MX6/7 DDR Stress Test Tool V3.00
then rebuild images with new calibration coefficients found from ddr test
(put them in uboot/board/..mx6sabresd/mx6q_4x_mt41j128.cfg).
After loading uboot one can try to use rootfs from prebuilt images.
Best regards
igor
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