On 12/14/2015 03:08 PM, justin chaise wrote:
Hi, I am working with a board that is almost the same as the imx23evk,
the imx28evk sibling.
It seems that not all of our, MXS family, drivers were ported to the
newer kernels.
If fido booted and you saw a login on the lcd you may be in good shape.
When you see the penguin logo that is the bootloader, u-boot,
initializing the hardware.
If the screen goes away after that; linux is not using or initializing
the lcd. It may be using the serial port.
First I would check the linux kernel command line switches in your
device tree under chosen --> bootargs.
Compare that to the settings you used with fido (linux-fslc 3.18?)
Second check the boot arguments in u-boot. These settings will overwrite
the command line switches from your device tree.
I you can not type at the command line in u-boot, you can change the
boot arguments in the code then recompile u-boot
see (include/configs/mx28evk.h)
I hope this starts you in the right direction.
It is definitively a good starting but it is even more puzzling:
- if uboot version changed from fido to jethro... it seems it is still
working since I can see the penguin logo
- the kernel didn't change. I'm using 4.1 in fido and jethro.
Anyway... I'll check in the direction you pointed.
thanks
--
Ivan Sergio Borgonovo
http://www.webthatworks.it
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