[PATCH v2 3/5] mtd: spi-nor: cadence-quadspi: Add new binding to enable loop-back circuit

[Rob Herring]

On Wed, Aug 16, 2017 at 10:20:51AM +0530, Vignesh R wrote:
> Cadence QSPI IP has a adapted loop-back circuit which can be enabled by
> setting BYPASS field to 0 in READCAPTURE register. It enables use of
> QSPI return clock to latch the data rather than the internal QSPI
> reference clock. For high speed operations, adapted loop-back circuit
> using QSPI return clock helps to increase data valid window.
> 
> Add DT parameter cdns,rclk-en to help enable adapted loop-back circuit
> for boards which do have QSPI return clock provided. Update binding
> documentation for the same.
> 
> Signed-off-by: Vignesh R <vigneshr at ti.com>
> ---
>  Documentation/devicetree/bindings/mtd/cadence-quadspi.txt | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Rob Herring <robh at kernel.org>