[U-Boot] [PATCH v3] Tegra: T210: Add QSPI driver

[Stephen Warren]

On 10/20/2015 03:31 PM, Tom Warren wrote:
> This is the normal Tegra SPI driver modified to work with the
> QSPI controller in Tegra210. It does not do 2x/4x transfers
> or any other QSPI protocol.
>
> Author: Yen Lin <yelin at nvidia.com>
> Signed-off-by: Yen Lin <yelin at nvidia.com>
> Signed-off-by: Tom Warren <twarren at nvidia.com>
> ---
> Changes in v2:
> - Drop defconfig and pinmux files, this is a driver-only patch.
> - If/when pinmux tables have been updated for P2371/P2571, another
> - patch will be sent to enable the QSPI driver on those boards.
> Changes in v3:
> - removed status reg write/clear in claim_bus(), done in xfer()

The code looks OK, but we need the binding document written and approved 
before we commit to the driver, I think.