of/exynos_g2d: Add Bindings for exynos G2D driver

Add documentation for the DT bindings in exynos G2D driver.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/Documentation/devicetree/bindings/drm/exynos/g2d.txt b/Documentation/devicetree/bindings/drm/exynos/g2d.txt
new file mode 100644 (file)
index 0000000..1eb124d
--- /dev/null
+++ b/Documentation/devicetree/bindings/drm/exynos/g2d.txt
@@ -0,0 +1,22 @@
+Samsung 2D Graphic Accelerator using DRM frame work
+
+Samsung FIMG2D is a graphics 2D accelerator which supports Bit Block Transfer.
+We set the drawing-context registers for configuring rendering parameters and
+then start rendering.
+This driver is for SOCs which contain G2D IPs with version 4.1.
+
+Required properties:
+       -compatible:
+               should be "samsung,exynos-g2d-41".
+       -reg:
+               physical base address of the controller and length
+               of memory mapped region.
+       -interrupts:
+               interrupt combiner values.
+
+Example:
+       g2d {
+               compatible = "samsung,exynos-g2d-41";
+               reg = <0x10850000 0x1000>;
+               interrupts = <0 91 0>;
+       };