mtd: atmel-quadspi: add driver for Atmel QSPI controller

Cyrille Pitchen · computersforpeace · commit 161aaab8a067 · 2016-07-15T17:43:45.000-07:00
This driver add support to the new Atmel QSPI controller embedded into
sama5d2x SoCs. It expects a NOR memory to be connected to the QSPI
controller.

Signed-off-by: Cyrille Pitchen &lt;cyrille.pitchen@atmel.com&gt;
Acked-by: Nicolas Ferre &lt;nicolas.ferre@atmel.com&gt;
Signed-off-by: Brian Norris &lt;computersforpeace@gmail.com&gt;
diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig
@@ -29,6 +29,15 @@ config MTD_SPI_NOR_USE_4K_SECTORS
 	  Please note that some tools/drivers/filesystems may not work with
 	  4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
 
+config SPI_ATMEL_QUADSPI
+	tristate "Atmel Quad SPI Controller"
+	depends on ARCH_AT91 || (ARM && COMPILE_TEST)
+	depends on OF && HAS_IOMEM
+	help
+	  This enables support for the Quad SPI controller in master mode.
+	  This driver does not support generic SPI. The implementation only
+	  supports SPI NOR.
+
 config SPI_FSL_QUADSPI
 	tristate "Freescale Quad SPI controller"
 	depends on ARCH_MXC || SOC_LS1021A || ARCH_LAYERSCAPE || COMPILE_TEST
diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
@@ -1,4 +1,5 @@
 obj-$(CONFIG_MTD_SPI_NOR)	+= spi-nor.o
+obj-$(CONFIG_SPI_ATMEL_QUADSPI)	+= atmel-quadspi.o
 obj-$(CONFIG_SPI_FSL_QUADSPI)	+= fsl-quadspi.o
 obj-$(CONFIG_SPI_HISI_SFC)	+= hisi-sfc.o
 obj-$(CONFIG_MTD_MT81xx_NOR)    += mtk-quadspi.o
diff --git a/drivers/mtd/spi-nor/atmel-quadspi.c b/drivers/mtd/spi-nor/atmel-quadspi.c

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`obj-$(CONFIG_MTD_SPI_NOR) += spi-nor.o`
	`2`	`+obj-$(CONFIG_SPI_ATMEL_QUADSPI) += atmel-quadspi.o`
`2`	`3`	`obj-$(CONFIG_SPI_FSL_QUADSPI) += fsl-quadspi.o`
`3`	`4`	`obj-$(CONFIG_SPI_HISI_SFC) += hisi-sfc.o`
`4`	`5`	`obj-$(CONFIG_MTD_MT81xx_NOR) += mtk-quadspi.o`