ARM: 5667/3: U300 SSP/SPI board setup and test

This adds a U300 board configuration for the PL022 SSP/SPI
PrimeCell driver recently merged to the 2.6.31-rc series.
Further it adds a dummy loopback SPI chip that can be used
for testing the SPI functionality on a running system using
the loopback mode of PL022.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/mach-u300/Kconfig b/arch/arm/mach-u300/Kconfig
index 337b9aabce49..801b21e7f677 100644
--- a/arch/arm/mach-u300/Kconfig
+++ b/arch/arm/mach-u300/Kconfig
@@ -81,6 +81,18 @@ config MACH_U300_SEMI_IS_SHARED
                 Memory Interface) from both from access and application
                 side.
 
+config MACH_U300_SPIDUMMY
+        bool "SSP/SPI dummy chip"
+        select SPI
+        select SPI_MASTER
+        select SPI_PL022
+        help
+                This creates a small kernel module that creates a dummy
+                SPI device to be used for loopback tests. Regularly used
+                to test reference designs. If you're not testing SPI,
+                you don't need it. Selecting this will activate the
+                SPI framework and ARM PL022 support.
+
 comment "All the settings below must match the bootloader's settings"
 
 config MACH_U300_ACCESS_MEM_SIZE