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>

2 files changed, 22 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt b/Documentation/devicetree/bindings/input/touchscreen/melfas_mip4.txt
new file mode 100644
index 000000000000..7b8944c2cb31
--- /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 99029cfed459..1457fd4d035f 100644
--- 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.