Input: melfas_mip4 - add devicetree binding documentations

Add devicetree binding documentations.

Signed-off-by: Sangwon Jee <jeesw@melfas.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt b/Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt
new file mode 100644 (file)
index 0000000..7b8944c
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt
@@ -0,0 +1,21 @@
+* MELFAS MIP4 Touchscreen
+
+Required properties:
+- compatible: must be "melfas,mip4_ts"
+- reg: I2C slave address of the chip (0x48 or 0x34)
+- interrupt-parent: interrupt controller to which the chip is connected
+- interrupts: interrupt to which the chip is connected
+
+Optional properties:
+- ce-gpios: GPIO connected to the CE (chip enable) pin of the chip
+
+Example:
+       i2c@00000000 {
+               touchscreen: melfas_mip4@48 {
+                       compatible = "melfas,mip4_ts";
+                       reg = <0x48>;
+                       interrupt-parent = <&gpio>;
+                       interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+                       ce-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+               };
+       };

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 99029cf..1457fd4 100644 (file)
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -143,6 +143,7 @@ marvell     Marvell Technology Group Ltd.
 maxim  Maxim Integrated Products
 mediatek       MediaTek Inc.
 melexis        Melexis N.V.
+melfas MELFAS Inc.
 merrii Merrii Technology Co., Ltd.
 micrel Micrel Inc.
 microchip      Microchip Technology Inc.