[media] Documentation: devicetree: Add document bindings for mtk-cir

This patch adds documentation for devicetree bindings for
consumer Mediatek IR controller.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/mtk-cir.txt b/Documentation/devicetree/bindings/media/mtk-cir.txt
new file mode 100644 (file)
index 0000000..2be2005
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mtk-cir.txt
@@ -0,0 +1,24 @@
+Device-Tree bindings for Mediatek consumer IR controller
+found in Mediatek SoC family
+
+Required properties:
+- compatible       : "mediatek,mt7623-cir"
+- clocks           : list of clock specifiers, corresponding to
+                     entries in clock-names property;
+- clock-names      : should contain "clk" entries;
+- interrupts       : should contain IR IRQ number;
+- reg              : should contain IO map address for IR.
+
+Optional properties:
+- linux,rc-map-name : see rc.txt file in the same directory.
+
+Example:
+
+cir: cir@10013000 {
+       compatible = "mediatek,mt7623-cir";
+       reg = <0 0x10013000 0 0x1000>;
+       interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_LOW>;
+       clocks = <&infracfg CLK_INFRA_IRRX>;
+       clock-names = "clk";
+       linux,rc-map-name = "rc-rc6-mce";
+};