spi: tegra: add spi driver for sflash controller

NVIDIA's Tegra20 have the SPI (SFLASH) controller to
interface with spi flash device which is used for system
boot. Add the spi driver for this controller.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 25290d9780b2..3cbc9fbe6d10 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -385,6 +385,14 @@ config SPI_MXS
         help
           SPI driver for Freescale MXS devices.
 
+config SPI_TEGRA20_SFLASH
+        tristate "Nvidia Tegra20 Serial flash Controller"
+        depends on ARCH_TEGRA
+        help
+          SPI driver for Nvidia Tegra20 Serial flash Controller interface.
+          The main usecase of this controller is to use spi flash as boot
+          device.
+
 config SPI_TEGRA20_SLINK
         tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
         depends on ARCH_TEGRA && TEGRA20_APB_DMA