Changes v4
- split patches
- remove unneeded line
- example update

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 .../interrupt-controller/iodata-landisk.txt        | 31 ++++++++++
 drivers/irqchip/Makefile                           |  2 +-
 drivers/irqchip/irq-io-landisk.c                   | 72 ++++++++++++++++++++++
 3 files changed, 104 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/iodata-landisk.txt
 create mode 100644 drivers/irqchip/irq-io-landisk.c

diff --git a/Documentation/devicetree/bindings/interrupt-controller/iodata-landisk.txt b/Documentation/devicetree/bindings/interrupt-controller/iodata-landisk.txt
new file mode 100644
index 0000000..cf461dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/iodata-landisk.txt

@@ -0,0 +1,31 @@
+DT bindings for the I/O DATA HDL-U interrupt controller
+
+Required properties:
+
+  - compatible: has to be "iodata,landisk-intc".
+
+  - reg: Base address and length of interrupt controller register.
+
+  - interrupt-controller: Identifies the node as an interrupt controller.
+
+  - #interrupt-cells: has to be <1>: an interrupt index.
+
+  - interrupt-map: Interrupt mapping on parent controller.