[U-Boot] [PATCH v2 6/7] am335x_evm: Add support for the NOR module on the memory cape

[Tom Rini]

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On 05/16/2013 02:54 PM, Peter Korsgaard wrote:
>>>>>> "Tom" == Tom Rini <trini at ti.com> writes:
> 
> Hi,
> 
>>> Perhaps the nand handling should just get moved out of
>>> gpmc_init() (or the _cs_config args should be passed to
>>> gpmc_init() ).
> 
> Tom> I looked at this, on the scale of redoing omap3 too (where we
> have a lot Tom> of existing examples).  The split we've got now
> works and it's harmless Tom> to re-configure CS0 in the case where
> the defaults don't work.  I think Tom> this would lead us to an
> abstraction that leads to a lot of board files Tom> duplicating the
> same code.
> 
> Maybe the solution is simply to have:
> 
> init_gpmc_nand() and init_gpmc_nor()

It boils down to:
a) Give all of CS0 to NAND
b) Give all of CS0 to NOR
c) Split CS0 into some number of segments for whatever the board wants.

What I had looked at doing before posting was:
mem.c:
__weak void configure_gpmc_cs0() { enable nand }
gpmc_init() {
... general init ...
configure_gpmc_cs0()
}

board-fu:
void configure_gpmc_cs0() {
... let the board sort it out ...
}

But I ended up with one non-default on all of omap3,which just says
"lets re-program cs0 for our split".

- -- 
Tom
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