Hi tony
there is no iomux tool for i.MX28, one can use
Table 8-2. Pin Definitions MCIMX28RM
also it may be useful for development to look at
Application note sharing: Issues often met in i.MX28 application
Regarding porting guide, this depends on kernel version and may be used one
Linux 2.6.35 for i.MX53, MX53UG
Best regards
igor
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