[U-Boot] Error reading cluster" from fs/fat/fat.c

[Oliver Graute <oliver.graute@kococonnector.com>]

On 26/08/19, Oliver Graute wrote:
> On 22/08/19, Oliver Graute wrote:
> > Hello list,
> > 
> > I have a annoying problem with u-boot 2019.07. I try to boot a Linux
> > Image from a fat16 partition on a SD-Card. But I got the "Error reading
> > cluster" Message from fs/fat/fat.c
> > 
> > => boot
> > switch to partitions #0, OK
> > mmc2 is current device
> > Error reading cluster
> > ** Unable to read file Image **

this error occurs especially on this Swissbit SD-Card (industrial card)

=> mmcinfo
Device: FSL_SDHC
Manufacturer ID: 5d
OEM: 5342
Name: L1BM1
Bus Speed: 50000000
Mode: SD High Speed (50MHz)
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 3.7 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes

another San-Disk SD-Card (consumer) I tried is working fine with same
u-boot image. So it looks for me for a wired hw/timing issue.

=> mmcinfo
Device: FSL_SDHC
Manufacturer ID: 13
OEM: 14e
Name: Q2J55 
Bus Speed: 52000000
Mode: MMC High Speed (52MHz)
Rd Block Len: 512
MMC version 5.0
High Capacity: Yes
Capacity: 7.1 GiB
Bus Width: 8-bit
Erase Group Size: 512 KiB
HC WP Group Size: 8 MiB
User Capacity: 7.1 GiB WRREL
Boot Capacity: 16 MiB ENH
RPMB Capacity: 4 MiB ENH

Best Regards,

Oliver