[U-Boot] Supporting two boards which are almost similar

[Sudhakar Rajashekhara <sudhakar.raj@ti.com>]

Hi Detlev,

On Tue, Jun 29, 2010 at 16:19:41, Detlev Zundel wrote:
> Hi Sudhakar,
> 
> > On Fri, Jun 25, 2010 at 16:40:19, Sudhakar Rajashekhara wrote:
> >> Hi,
> >> 
> >> Spectrum digital has two versions of DM6467 EVM, DM6467 and DM6467T.
> >> Though there are some video related differences between these two boards,
> >> from U-Boot perspective the only difference the developer need to worry
> >> is the different oscillator frequency. DM6467 has 27MHz crystal but
> >> DM6467T has 33MHz crystal. Both these EVMs are registered as two different
> >> boards in mach-types.h. Existing U-Boot has support DM6467 EVM which has
> >> 27MHz crystal. How should I go about adding support for DM6467T EVM which
> >> has 33MHz crystal? Do I need to add a new configuration file for this or
> >> can I make use of the existing configuration file in any way?
> >> 
> >> One method I was aware of was, using some scripting from the top level
> >> Makefile but I believe this is not recommended.
> >> 
> >
> > Any other method of achieving this?
> 
> Actually I'm just in the process of answering your question.
> My immediate response would have been "use -t for mkconfig" but this
> does not (yet) work for boards.cfg versions.  So I'm just in the process
> of testing a mkconfig extension to allow for similar handling of
> "BOARD_OPTION1_OPTION2" configurations which will be split into
> 'CONFIG_MK_{BOARD,OPTION1,OPTION2}' defines.
> 
> When we have this, we can use a common config file and use #ifdefs for
> these CONFIG_MK defines.
> 
> Stay tuned
>   Detlev

Were you able to do any further investigation on this? I can take up some
testing, if that helps?

Thanks,
Sudhakar