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problem about sd card detection on dm385 kernel

Ray Z
Prodigy 200 points


The problem is booting from sd on dm385 is ok, but after entering kernel in SPI storage, sd card detection doesn't work.  with some debug, I found the MMC host controller did not send the CMD, neither does the clock signal.

by the way, I have another board which has the same hardware design but the SOC chip is DM8127, SD card detection works well on it.  I work on RDK3.8. Can someone help me? thanks in advance!

  • 0
    TI__Guru**** 170625 points

    Hi Ray,

    Are you using TI EVM or custom board?

    Do you boot/load everything from the SD card (MLO, u-boot.bin, uImage, rootfs)?

    Ray Z said:
    but after entering kernel in SPI storage, sd card detection doesn't work.

    Can you provide a console log output?

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    Prodigy 200 points

    Hi Pavel,  Thanks for your reply, I've just resolved this problem. The reason is the mmc host controller id was not correct, after modify the correspond mmc member in mmc array of board-dm385ipnc.c, the detection works good now.