[PATCH v8 2/6] ARM: OMAP2+: cleaned-up DT support of various ECC schemes

[Tony Lindgren]

* Felipe Balbi <balbi at ti.com> [131011 09:03]:
> On Fri, Oct 11, 2013 at 07:06:39PM +0530, Pekon Gupta wrote:
> > OMAP NAND driver support multiple ECC scheme, which can used in following
> > different flavours, depending on in-build Hardware engines supported by SoC.
> > 
> > +---------------------------------------+---------------+---------------+
> > | ECC scheme                            |ECC calculation|Error detection|
> > +---------------------------------------+---------------+---------------+
> > |OMAP_ECC_HAM1_CODE_HW                  |H/W (GPMC)     |S/W            |
> > +---------------------------------------+---------------+---------------+
> > |OMAP_ECC_BCH8_CODE_HW_DETECTION_SW     |H/W (GPMC)     |S/W            |
> > |(requires CONFIG_MTD_NAND_ECC_BCH)     |               |               |
> > +---------------------------------------+---------------+---------------+
> > |OMAP_ECC_BCH8_CODE_HW                  |H/W (GPMC)     |H/W (ELM)      |
> > |(requires CONFIG_MTD_NAND_OMAP_BCH &&  |               |               |
> > | ti,elm-id in DT)                      |               |               |
> > +---------------------------------------+---------------+---------------+
> > To optimize footprint of omap2-nand driver, selection of some ECC schemes
> > also require enabling following Kconfigs, in addition to setting appropriate
> > DT bindings
> > - Kconfig:CONFIG_MTD_NAND_ECC_BCH        error detection done in software
> > - Kconfig:CONFIG_MTD_NAND_OMAP_BCH       error detection done by h/w engine
> > 
> > DT binding updates in this patch are:
> > - ti,elm-id: replaces elm_id
> > - ti,nand-ecc-opts: supported values ham1, bch4, and bch8
> > 	selection of h/w or s/w implementation depends on ti,elm-id
> > 
> > Signed-off-by: Pekon Gupta <pekon at ti.com>
> 
> since this maintains backwards compatibility, I think it should be
> alright to apply
> 
> Reviewed-by: Felipe Balbi <balbi at ti.com>

This patch looks safe to queue via the MTD tree for the arch/arm/*omap*
parts in this patch:

Acked-by: Tony Lindgren <tony at atomide.com>