ls1046a using emmc as boot source

shijj — Sat, 15 Feb 2020 08:04:45 GMT

In my coustom board,I use emmc/sd as boot source.but i don't use SDHC_CD_B pin.it always floating.my board is refer to ls1046ardb board.

Now I can boot from sd card ,but i can't boot from emmc.

why I can boot from sd? the SDHC_CD_B pin is floating And Why I can't boot from emmc,Is it because PBL has special regulations for this pin?

in spec,when use sdhc as boot source, SDHC_CD_B pin be serve as the SDHC_CD_B pin for the eSDHC controller. This happens automatically when the microSD card is selected as the boot source for the board.

Re: ls1046a using emmc as boot source

ufedor — Sat, 15 Feb 2020 10:42:59 GMT

Please provide the processor connection schematics as searchable PDF for inspection.

Layerscape中的主题 ls1046a using emmc as boot source

ls1046a using emmc as boot source

Re: ls1046a using emmc as boot source