[PATCH v4 1/2] spi:fsl-dspi:convert to use regmap and big-endian supports

[Mark Brown]

On Fri, Feb 14, 2014 at 07:33:17AM +0000, Li.Xiubo at freescale.com wrote:

> If needed, you should add the callbacks like:
> 	.readable_reg,
> 	.writeable_reg,
> 	.volatile_reg,

They're not 100% needed unless you have a cache in which case
volatile_reg() becomes important but it's definitely good practice to
add them.
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