[U-Boot] [U-Boot, v2] mtd: nand: omap_gpmc: Always use ready/busy pin

[Tom Rini]

On Thu, Nov 13, 2014 at 03:43:39AM +0100, Stefan Roese wrote:

> The functions to detect the state of the ready / busy signal is already
> available but only used in the SPL case. Lets use it always, also for the
> main U-Boot. As all boards should have this HW connection.
> 
> Testing on Siemens Draco (am335x) showed a small perfomance gain by using
> this ready pin to detect the NAND chip state. Here the values tested on
> Draco with Hynix 4GBit NAND:
> 
> Without NAND ready pin:
> 
> U-Boot# time nand read 80400000 0 400000
> 
> NAND read: device 0 offset 0x0, size 0x400000
> 4194304 bytes read: OK
> 
> time: 2.947 seconds, 2947 ticks
> 
> With NAND ready pin:
> 
> U-Boot# time nand read 80400000 0 400000
> 
> NAND read: device 0 offset 0x0, size 0x400000
> 4194304 bytes read: OK
> 
> time: 2.795 seconds, 2795 ticks
> 
> So an increase of approx. 5%.
> 
> Signed-off-by: Stefan Roese <sr at denx.de>
> Cc: Tom Rini <trini at ti.com>
> Cc: Scott Wood <scottwood at freescale.com>
> Cc: Roger Meier <r.meier at siemens.com>
> Cc: Samuel Egli <samuel.egli at siemens.com>

Applied to u-boot-ti/master, thanks!

-- 
Tom
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