TE0820 eMMC Failures

[jan.blaesi]

Hi,

we are using the TE0820 modules in a product of ours and have now had two failures where the eMMC has failed on the module.

The controller still shows up in dmesg, but not the eMMC. Also, lsblk shows no disk:

Code Select Expand

# dmesg | grep mmc
[    0.000000] Kernel command line: earlycon console=ttyPS0,115200 clk_ignore_unused spidev.bufsiz=65536 uio_pdrv_genirq.of_id=generic-uio root=/dev/mmcblk1p2 rw rootwait rootdelay=1
[    3.809805] mmc0: SDHCI controller on ff160000.mmc [ff160000.mmc] using ADMA 64-bit
[    3.820715] mmc1: SDHCI controller on ff170000.mmc [ff170000.mmc] using ADMA 64-bit
[    3.961601] mmc1: new high speed SDHC card at address aaaa
[    3.967493] mmcblk1: mmc1:aaaa SB32G 29.7 GiB
[    3.976968]  mmcblk1: p1 p2
[    5.176996] EXT4-fs (mmcblk1p2): recovery complete
[    5.182735] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none.
[    6.807187] EXT4-fs (mmcblk1p2): re-mounted. Opts: (null). Quota mode: none.

 # lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
mtdblock0    31:0    0   10M  0 disk
mtdblock1    31:1    0   32M  0 disk
mtdblock2    31:2    0   32M  0 disk
mtdblock3    31:3    0  512K  0 disk
mmcblk1     179:0    0 29.7G  0 disk
|-mmcblk1p1 179:1    0  100M  0 part
`-mmcblk1p2 179:2    0  5.2G  0 part /

Do you have any idea of a possible cause?

Best regards

[MA]

Hi,

the eMMC is also not found during the startup, otherwise a print like e.g.

• mmc0: new high speed MMC card at address 0001

would be found.
Do you have the opportunity to test our prebuilt files?

Best regards,
Manuela