[U-Boot] mx28: U-Boot fails to boot with VDD5V only power configuration

[Ankur Patel]

Dear Friends,

I'm bringing up a custom i.MX28 based board.  I'm having trouble bringing up the u-boot (version v2013.04) loader.  The Powersupply has been design as detailed in section 4.1.2.1 (VDD5V source only) of application note AN4199:

http://www.freescale.com/files/32bit/doc/app_note/AN4199.pdf

I am referring Patch L2.6.35_10.12_SDK_5V_SUPPLY_PATCH.tar.gz<https://www.freescale.com/webapp/Download?colCode=L2.6.35_10.12_5V_SUPPLY_PATCH&appType=license&location=null&fsrch=1&sr=1&Parent_nodeId=from%20search&Parent_pageType=from%20search&Parent_nodeId=1285099003907707430022&Parent_pageType=product> at freescale website which is for bootlets with VDD5V only support. I have even applied the patch to bootlet code imx-bootlets-src-10.12.01.tar.gz which is working fine.

Based on the bootlet patch, I have modified the u-boot code but I couldn't able to boot. Please find the u-boot patch at http://pastebin.com/VudxqTHQ

Can anyone please review it and share what is missing in the patch?

Regards,

Ankur