arm: vt8500: doc: Add device tree bindings for arch-vt8500 devices

Bindings for gpio, interrupt controller, power management controller,
timer, realtime clock, serial uart, ehci and uhci controllers and
framebuffer controllers used on the arch-vt8500 platform.

Framebuffer binding also specifies a 'display' node which is required
for determining the lcd panel data.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>

3 files changed, 98 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/video/via,vt8500-fb.txt b/Documentation/devicetree/bindings/video/via,vt8500-fb.txt
new file mode 100644
index 00000000000..c870b6478ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/via,vt8500-fb.txt
@@ -0,0 +1,62 @@
+VIA VT8500 Framebuffer
+-----------------------------------------------------
+
+Required properties:
+- compatible : "via,vt8500-fb"
+- reg : Should contain 1 register ranges(address and length)
+- interrupts : framebuffer controller interrupt
+- display: a phandle pointing to the display node
+
+Required nodes:
+- display: a display node is required to initialize the lcd panel
+	This should be in the board dts.
+- default-mode: a videomode within the display with timing parameters
+	as specified below.
+
+Example:
+
+	fb@d800e400 {
+		compatible = "via,vt8500-fb";
+		reg = <0xd800e400 0x400>;
+		interrupts = <12>;
+		display = <&display>;
+		default-mode = <&mode0>;
+	};
+
+VIA VT8500 Display
+-----------------------------------------------------
+Required properties (as per of_videomode_helper):
+
+ - hactive, vactive: Display resolution
+ - hfront-porch, hback-porch, hsync-len: Horizontal Display timing parameters
+   in pixels
+   vfront-porch, vback-porch, vsync-len: Vertical display timing parameters in
+   lines
+ - clock: displayclock in Hz
+ - bpp: lcd panel bit-depth.
+	<16> for RGB565, <32> for RGB888
+
+Optional properties (as per of_videomode_helper):
+ - width-mm, height-mm: Display dimensions in mm
+ - hsync-active-high (bool): Hsync pulse is active high
+ - vsync-active-high (bool): Vsync pulse is active high
+ - interlaced (bool): This is an interlaced mode
+ - doublescan (bool): This is a doublescan mode
+
+Example:
+	display: display@0 {
+		modes {
+			mode0: mode@0 {
+				hactive = <800>;
+				vactive = <480>;
+				hback-porch = <88>;
+				hfront-porch = <40>;
+				hsync-len = <0>;
+				vback-porch = <32>;
+				vfront-porch = <11>;
+				vsync-len = <1>;
+				clock = <0>;	/* unused but required */
+				bpp = <16>;	/* non-standard but required */
+			};
+		};
+	};
diff --git a/Documentation/devicetree/bindings/video/wm,prizm-ge-rops.txt b/Documentation/devicetree/bindings/video/wm,prizm-ge-rops.txt
new file mode 100644
index 00000000000..a850fa011f0
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/wm,prizm-ge-rops.txt
@@ -0,0 +1,13 @@
+VIA/Wondermedia Graphics Engine Controller
+-----------------------------------------------------
+
+Required properties:
+- compatible : "wm,prizm-ge-rops"
+- reg : Should contain 1 register ranges(address and length)
+
+Example:
+
+	ge_rops@d8050400 {
+		compatible = "wm,prizm-ge-rops";
+		reg = <0xd8050400 0x100>;
+	};
diff --git a/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt b/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt
new file mode 100644
index 00000000000..3d325e1d11e
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt
@@ -0,0 +1,23 @@
+Wondermedia WM8505 Framebuffer
+-----------------------------------------------------
+
+Required properties:
+- compatible : "wm,wm8505-fb"
+- reg : Should contain 1 register ranges(address and length)
+- via,display: a phandle pointing to the display node
+
+Required nodes:
+- display: a display node is required to initialize the lcd panel
+	This should be in the board dts. See definition in
+	Documentation/devicetree/bindings/video/via,vt8500-fb.txt
+- default-mode: a videomode node as specified in
+	Documentation/devicetree/bindings/video/via,vt8500-fb.txt
+
+Example:
+
+	fb@d8050800 {
+		compatible = "wm,wm8505-fb";
+		reg = <0xd8050800 0x200>;
+		display = <&display>;
+		default-mode = <&mode0>;
+	};