plat-nand DT support

[Alexander Clouter]

Hi,

I have been busy porting an ARM board (that uses plat_nand) to devicetree and stumbled on John 
Crispin's patch from last year[1].  There was not much online about how to use it, so I went 
about building upon his work it what seemed to be natural and a good fit.

Attached is the work I have done to the driver its-self (including the much needed bindings 
documentation), whilst on my github page I have put up an example of its usage:

https://github.com/jimdigriz/ts78xx/blob/gen-nand-dt/arch/arm/mach-orion5x/board-ts7800.c
https://github.com/jimdigriz/ts78xx/blob/gen-nand-dt/arch/arm/boot/dts/orion5x-ts7800.dts

Am I going in the right direction here?  plat_nand, by its nature, is not very DT, the 
alternative would be a custom driver for my platform[2] but then are we not just littering 
drivers/mtd/nand rather than arch/arm/mach-foobar?

Cheers

[1] http://lists.infradead.org/pipermail/linux-mtd/2012-April/041025.html
[2] could also support the NAND used by arch/arm/mach-ep93xx/ts72xx.c but the whole SoC has not 
	been ported to DT

-- 
Alexander Clouter
.sigmonster says: How many weeks are there in a light year?
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