On 11/26/2013 10:10 AM, Alex Shi wrote:

On 11/23/2013 12:15 AM, Naresh Kamboju wrote:

Alex Shi,

Please follow this thread for more information
http://lists.linaro.org/pipermail/linaro-kernel/2013-November/008947.html

Thanks a lot for the help!

I updated to latest upstream kernel, it has regulator update. and remove
the mmc driver in kernel config, since wiki said it is using USB stick.

but seems this tc2 board is very unstable.
sometime it need multi time 'reboot' command.
sometime it hang on 'Cmd> reboot',

Yeah, that happens on my board too. After the board has rebooted you have to wait a bit (several seconds) before sending a command.

----
DB SMB clock enabled.
Waiting for SITE1 CB_READY...
Testing SMB clock...
Configuring MUXFPGA for MB.
Setting DVI mode for VGA.
Releasing Daughterboard resets.
Switching MCC log to UART1.
----

or sometime is hang after
----

fl source ubuntu

Running script from flash - ubuntu
Loaded FDT - u-dtb
Loaded initrd - u-initrd
Loaded kernel - u-zimage
Booting kernel @ 0x80008000
Command line 'console=ttyAMA0,38400n8 root=/dev/sda2 rootwait ro
mem=2048M ip=dhcp clcd=xvga mmci.fmax=12000000'
initrd @ 0xa0100000 (1767175 bytes)
FDT @ 0xa0000000 (14897 bytes)


Fatal Error: Unhandled Exception - Undefined
----

Anyone can check the hardware unstable issue for this board?

For me it happened only when I choose the wrong kernel or copied the kernel in the wrong place.

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