SD Card not detected by T4240QDS u-boot

aloishahn — Tue, 03 Mar 2015 09:55:05 GMT

Hi,

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

FSL_SDHC: 0

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

Any ideas?

best regards

Alois

Original Attachment has been moved to: t4240qds-boot.txt.zip

Re: SD Card not detected by T4240QDS u-boot

Pavel — Fri, 06 Mar 2015 12:32:49 GMT

aloishahn — Mon, 09 Mar 2015 12:11:21 GMT

Hi Pavel,

works fine now, found SW7[4]=ON to switch from internal to external SD.

many thanks ans best regards

Alois