spi: Add OF binding support for SPI busses

This patch adds support for populating an SPI bus based on data in the
OF device tree.  This is useful for powerpc platforms which use the
device tree instead of discrete code for describing platform layout.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 1d7ec3129349..f821dbc952a4 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -13,3 +13,9 @@ config OF_I2C
         depends on PPC_OF && I2C
         help
           OpenFirmware I2C accessors
+
+config OF_SPI
+        def_tristate SPI
+        depends on OF && PPC_OF && SPI
+        help
+          OpenFirmware SPI accessors