AnsweredAssumed Answered

SD Card not detected by T4240QDS u-boot

Question asked by Alois Hahn on Mar 3, 2015
Latest reply on Mar 9, 2015 by Alois Hahn



could anybody give me a hint about how to use the SD Card Slot on the T4240-QDS?

I want to setup my system for SD Card deloyment. I did a similiar thing on T4240RDB and T2080RDB already, which works fine there.


Now, on the T4240QDS, my SD Card is not detected by u-boot.

I would expect to see the SD Card in u-boot with command "mmcinfo".

Actually it lists an mmc, but it seems to list the internal MMC only, but the external is not visible.


=> mmcinfo

Device: FSL_SDHC

Manufacturer ID: fe

OEM: 14e

Name: MMC04

Tran Speed: 52000000

Rd Block Len: 512

MMC version 4.0

High Capacity: Yes

Capacity: 3.6 GiB

Bus Width: 4-bit

=> help mmc


mmc list does not show the external SD Card, just the internal on, independent of either the external us plugged in or not

=> mmc list




For reference I have attached the whole boot log "t4240qds-boot.txt"


Any ideas?


best regards


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