ARM: u300: probe the U300 dummy-spichip from device tree

This probes the U300 dummy-spichip from the device tree
and adds the apropriate node to the tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

2 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/ste-u300.dts b/arch/arm/boot/dts/ste-u300.dts
index 355ac60369c2..1b20769d261a 100644
--- a/arch/arm/boot/dts/ste-u300.dts
+++ b/arch/arm/boot/dts/ste-u300.dts
@@ -233,6 +233,11 @@
                         num-cs = <3>;
                         #address-cells = <1>;
                         #size-cells = <0>;
+                        spi-dummy@1 {
+                                compatible = "arm,pl022-dummy";
+                                reg = <1>;
+                                spi-max-frequency = <20000000>;
+                        };
                 };
         };
 };
diff --git a/arch/arm/mach-u300/dummyspichip.c b/arch/arm/mach-u300/dummyspichip.c
index 2785cb67b5e8..52962bf83900 100644
--- a/arch/arm/mach-u300/dummyspichip.c
+++ b/arch/arm/mach-u300/dummyspichip.c
@@ -263,10 +263,16 @@ static int pl022_dummy_remove(struct spi_device *spi)
         return 0;
 }
 
+static const struct of_device_id pl022_dummy_dt_match[] = {
+        { .compatible = "arm,pl022-dummy" },
+        {},
+};
+
 static struct spi_driver pl022_dummy_driver = {
         .driver = {
                 .name   = "spi-dummy",
                 .owner  = THIS_MODULE,
+                .of_match_table = pl022_dummy_dt_match,
         },
         .probe  = pl022_dummy_probe,
         .remove = pl022_dummy_remove,