spi: spi-mem: Add support for Zynq QSPI controller

Add support for QSPI controller driver used by Xilinx Zynq SOC.
Signed-off-by: NNaga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/Kconfig

@@ -848,9 +848,17 @@ config SPI_XTENSA_XTFPGA
 	  16 bit words in SPI mode 0, automatically asserting CS on transfer
 	  start and deasserting on end.
 
+config SPI_ZYNQ_QSPI
+	tristate "Xilinx Zynq QSPI controller"
+	depends on ARCH_ZYNQ || COMPILE_TEST
+	help
+	  This enables support for the Zynq Quad SPI controller
+	  in master mode.
+	  This controller only supports SPI memory interface.
+
 config SPI_ZYNQMP_GQSPI
 	tristate "Xilinx ZynqMP GQSPI controller"
-	depends on SPI_MASTER && HAS_DMA
+	depends on (SPI_MASTER && HAS_DMA) || COMPILE_TEST
 	help
 	  Enables Xilinx GQSPI controller driver for Zynq UltraScale+ MPSoC.
 

drivers/spi/Makefile

@@ -119,6 +119,7 @@ obj-$(CONFIG_SPI_XCOMM)		+= spi-xcomm.o
 obj-$(CONFIG_SPI_XILINX)		+= spi-xilinx.o
 obj-$(CONFIG_SPI_XLP)			+= spi-xlp.o
 obj-$(CONFIG_SPI_XTENSA_XTFPGA)		+= spi-xtensa-xtfpga.o
+obj-$(CONFIG_SPI_ZYNQ_QSPI)		+= spi-zynq-qspi.o
 obj-$(CONFIG_SPI_ZYNQMP_GQSPI)		+= spi-zynqmp-gqspi.o
 
 # SPI slave protocol handlers