I have fixed the problem. The imx6 pads accessing the SD needed some better calibration in my board file

Thank you A

On Sat, Jan 25, 2014 at 2:39 PM, Andy Ng andreas2025@gmail.com wrote:

Dear colleagues,

The u-boot freezes when I try to read mmc for second time. u-boot 2013-10, imx6 Solo CPU

One the first read I do have also an error:

mx6s > run bootmmc reading uImage Error reading cluster ** Unable to read file uImage ** ## Booting kernel from Legacy Image at 12000000 ... Image Name: Linux-3.0.80-rt108+linx-rt+g7ff5 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3862400 Bytes = 3.7 MiB Load Address: 10008000 Entry Point: 10008000 Verifying Checksum ... Bad Data CRC ERROR: can't get kernel image! mx6s >

On the second read: mx6s > run bootmmc <U-BOOT - Freezes > the console freezes and I have to reboot the machine.

bootmmc=run mmcargs; fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${uimage}; bootm bootscript=echo Running bootscript from mmc ...; source console=ttymxc0 mmcargs=setenv bootargs console=${console},${baudrate} root=${mmcroot} rootwait rw mmcdev=0 mmcpart=1 mmcroot=/dev/mmcblk0p2

I produce the SD card image using Ycoto build system.

Have you ever seen something similar?

Best regards, A