video: fbdev: add Marvell PXA LCD controller binding

Add documentation for the PXA LCD controller devicetree binding.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt b/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt
new file mode 100644 (file)
index 0000000..309c47f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt
@@ -0,0 +1,34 @@
+PXA LCD Controller
+------------------
+
+Required properties:
+ - compatible : one of these
+       "marvell,pxa2xx-lcdc",
+       "marvell,pxa270-lcdc",
+       "marvell,pxa300-lcdc"
+ - reg : should contain 1 register range (address and length).
+ - interrupts : framebuffer controller interrupt.
+ - clocks: phandle to input clocks
+
+Required nodes:
+ - port: connection to the LCD panel (see video-interfaces.txt)
+        This node must have its properties bus-width and remote-endpoint set.
+        If the panel is not a TFT color panel, then a "lcd-type" property in
+        the panel should specify the panel type.
+        This panel node should be in the board dts.
+
+Example:
+       lcd-controller@40500000 {
+               compatible = "marvell,pxa2xx-lcdc";
+               reg = <0x44000000 0x10000>;
+               interrupts = <17>;
+               clocks = <&clks CLK_LCD>;
+               status = "okay";
+
+               port {
+                       lcdc_out: endpoint {
+                               remote-endpoint = <&panel_in>;
+                               bus-width = <16>;
+                       };
+               };
+       };