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, 31 insertions, 0 deletions

diff --git a/dts/Bindings/clock/ti/apll.txt b/dts/Bindings/clock/ti/apll.txt
new file mode 100644
index 0000000000..7faf5a68b3
--- /dev/null
+++ b/dts/Bindings/clock/ti/apll.txt
@@ -0,0 +1,31 @@
+Binding for Texas Instruments APLL clock.
+
+Binding status: Unstable - ABI compatibility may be broken in the future
+
+This binding uses the common clock binding[1].  It assumes a
+register-mapped APLL with usually two selectable input clocks
+(reference clock and bypass clock), with analog phase locked
+loop logic for multiplying the input clock to a desired output
+clock. This clock also typically supports different operation
+modes (locked, low power stop etc.) APLL mostly behaves like
+a subtype of a DPLL [2], although a simplified one at that.
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+[2] Documentation/devicetree/bindings/clock/ti/dpll.txt
+
+Required properties:
+- compatible : shall be "ti,dra7-apll-clock"
+- #clock-cells : from common clock binding; shall be set to 0.
+- clocks : link phandles of parent clocks (clk-ref and clk-bypass)
+- reg : address and length of the register set for controlling the APLL.
+  It contains the information of registers in the following order:
+	"control" - contains the control register base address
+	"idlest" - contains the idlest register base address
+
+Examples:
+	apll_pcie_ck: apll_pcie_ck@4a008200 {
+		#clock-cells = <0>;
+		clocks = <&apll_pcie_in_clk_mux>, <&dpll_pcie_ref_ck>;
+		reg = <0x4a00821c 0x4>, <0x4a008220 0x4>;
+		compatible = "ti,dra7-apll-clock";
+	};