[PATCH v2 2/4] dt-bindings: Add binding for Ilitek ILI9225 display panels

[David Lechner <david@lechnology.com>]

This adds a new binding for display panels that use an Ilitek ILI9225
controller.

The "ilitek,ili9225-2.2in-176x220" device listed has no identification
markings whatsoever and an hour of googling turned up nothing, hence the use
of the size and resolution in the name instead of a model name.

An example of this nameless device can be found at:
https://github.com/Nkawu/TFT_22_ILI9225

Signed-off-by: David Lechner <david@lechnology.com>
---

v2 changes:
* renamed compatible string based on feedback

 .../devicetree/bindings/display/ilitek,ili9225.txt | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9225.txt

diff --git a/Documentation/devicetree/bindings/display/ilitek,ili9225.txt b/Documentation/devicetree/bindings/display/ilitek,ili9225.txt
new file mode 100644
index 0000000..21607a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ilitek,ili9225.txt
@@ -0,0 +1,25 @@
+Ilitek ILI9225 display panels
+
+This binding is for display panels using an Ilitek ILI9225 controller in SPI
+mode.
+
+Required properties:
+- compatible:	"ilitek,ili9225-2.2in-176x220"
+- rs-gpios:	Register select signal
+- reset-gpios:	Reset pin
+
+The node for this driver must be a child node of a SPI controller, hence
+all mandatory properties described in ../spi/spi-bus.txt must be specified.
+
+Optional properties:
+- rotation:	panel rotation in degrees counter clockwise (0,90,180,270)
+
+Example:
+	display@0{
+		compatible = "ilitek,ili9225-2.2in-176x220";
+		reg = <0>;
+		spi-max-frequency = <12000000>;
+		rs-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
+		rotation = <270>;
+	};
-- 
2.7.4

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