Dear Thierry,
In message 5308E4D1.5000509@free.fr you wrote:
The board I am working on, is based on the Freescale sabrelite board, the manufacturer provides support for it , as an about 1000 lines patch that applies to rel_imx_3.0.35_4.1.0 (3.0.35_4.1.0 is the kernel version I am using)
The kernel version is actually totally uninteresting here. What matters is what U-Boot version you have. Let me guess - it is some v2009.x - i. e. 5 year old stuff?
So what would be the easiest and time less costing option to achieve what I want to do ?
It is best to take current code (top of tree in git repository) and port it to your hardware from scratch. You can use your old code as reference, for example how to set up pin muxing and such. Otherwise it is pretty much worthless.
Best regards,
Wolfgang Denk