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memory: omap-gpmc: Support general purpose input for WAITPINs

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OMAPs can have 2 to 4 WAITPINs that can be used as general purpose
input if not used for memory wait state insertion.

The first user will be the OMAP NAND chip to get the NAND
read/busy status using gpiolib.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Roger Quadros
2016-03-07 12:18:43 +02:00
parent 3c76f6119a
commit d2d00862df
3 changed files with 112 additions and 12 deletions
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drivers/memory/Kconfig
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@@ -51,6 +51,7 @@ config TI_EMIF
config OMAP_GPMC
bool
select GPIOLIB
help
This driver is for the General Purpose Memory Controller (GPMC)
present on Texas Instruments SoCs (e.g. OMAP2+). GPMC allows