[U-Boot] structure usage for peripheral registers

[Wolfgang Denk]

Dear Vipin Kumar,

In message <AANLkTilwwiY7k1ZH5oPYukIiY9updRtHgFpGivEhgTgV at mail.gmail.com> you wrote:
> 
> The u-boot source has been following a strict rule to use
> structures to define peripheral registers for some time now
> 
> I was wondering if there really is an advantage over the macro
> definitions which is being used in Linux until today or this is just
> a coding guideline to maintain consistency in the code

The advantage is that the compiler can perform strict type checking
(assuming a proper set of accessor functions is available); using
base address + offset notation you will not get any compile time
warnings when trying to access - say - a 16 bit wide register in 32
bit mode, etc.

Best regards,

Wolfgang Denk

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