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work with processor registers?

Question asked by jack rubby on Aug 17, 2013
Latest reply on Sep 17, 2013 by jack rubby


I am working on p1022 with a sample designed board. I want to use only SATA and Ethernet processor features and I put a sd card with minimal image.

1- Should I modify registers content to use these features? or primary initialize features is adequate?

2-  How can I read/write registers? Is CodeWarrior only way ?

3- For example in Protocol Control Register (PROCTL), DTW bits are 00 at first.How can I change DTW to 01 for 4-bit data transfer rate in eSDHC? Is it possible before booting minimal image?