On Thu, Jul 09, 2015 at 06:14:55PM +0530, Ranjit Waghmode wrote:
> This patch adds support of stacked mode configuration for
> Zynq Ultrascale+ MPSoC GQSPI controller driver.

> +	} else if (qspi->master->flags & SPI_MASTER_U_PAGE) {

Same here, there's no definition of SPI_MASTER_U_PAGE.  It doesn't sound
very generic but I'm not entirely sure what "stacked mode" is.