Add devicetree source files as of Linux-3.15-rc2

This adds the Linux dts files to barebox. The dts files are
generated from Ian Campbells device-tree-rebasing.git:

git://xenbits.xen.org/people/ianc/device-tree-rebasing.git

The dts are found in dts/ in the barebox repository and
will be updated from upstream regularly, probably for each upstream
-rc.

To keep the synchronization with upstream easy no changes to
the original files are allowed under dts/. Instead changes to
upstream dts files will be done using overlays in arch/$ARCH/dts/.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 29 insertions, 0 deletions

diff --git a/dts/Bindings/i2c/i2c-riic.txt b/dts/Bindings/i2c/i2c-riic.txt
new file mode 100644
index 0000000000..0bcc4716c3
--- /dev/null
+++ b/dts/Bindings/i2c/i2c-riic.txt
@@ -0,0 +1,29 @@
+Device tree configuration for Renesas RIIC driver
+
+Required properties:
+- compatible      : "renesas,riic-<soctype>". "renesas,riic-rz" as fallback
+- reg             : address start and address range size of device
+- interrupts      : 8 interrupts (TEI, RI, TI, SPI, STI, NAKI, ALI, TMOI)
+- clock-frequency : frequency of bus clock in Hz
+- #address-cells  : should be <1>
+- #size-cells     : should be <0>
+
+Pinctrl properties might be needed, too. See there.
+
+Example:
+
+	i2c0: i2c@fcfee000 {
+		compatible = "renesas,riic-r7s72100", "renesas,riic-rz";
+		reg = <0xfcfee000 0x44>;
+		interrupts = <0 157 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 158 IRQ_TYPE_EDGE_RISING>,
+			     <0 159 IRQ_TYPE_EDGE_RISING>,
+			     <0 160 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 161 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 162 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 163 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 164 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <100000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};