[PATCH 1/2] dt-bindings: HID: i2c-hid: elan: Introduce FocalTech FT8112

[daniel_peng]

From: Daniel Peng <Daniel_Peng@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>

The FocalTech FT8112 touch screen chip same as Ilitek ili2901 controller
has a reset gpio. The difference is that they have different
post_gpio_reset_on_delay_ms.
FocalTech FT8112 also uses 3.3V power supply.

Signed-off-by: Daniel Peng <Daniel_Peng@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
---

 .../bindings/input/focaltech,ft8112.yaml      | 66 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/focaltech,ft8112.yaml

diff --git a/Documentation/devicetree/bindings/input/focaltech,ft8112.yaml b/Documentation/devicetree/bindings/input/focaltech,ft8112.yaml
new file mode 100644
index 000000000000..391825b24fcb
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/focaltech,ft8112.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/focaltech,ft8112.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: FocalTech FT8112 touchscreen controller
+
+maintainers:
+  - Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
+
+description:
+  Supports the FocalTech FT8112 touchscreen controller.
+  This touchscreen controller uses the i2c-hid protocol with a reset GPIO.
+
+allOf:
+  - $ref: /schemas/input/touchscreen/touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - focaltech,ft8112
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  panel: true
+
+  reset-gpios:
+    maxItems: 1
+
+  vcc33-supply: true
+
+  vccio-supply: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - vcc33-supply
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      touchscreen@38 {
+        compatible = "focaltech,ft8112";
+        reg = <0x38>;
+
+        interrupt-parent = <&pio>;
+        interrupts = <15 IRQ_TYPE_LEVEL_LOW>>;
+
+        reset-gpios = <&pio 126 GPIO_ACTIVE_LOW>;
+        vcc33-supply = <&pp3300_tchscr_x>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index ddecf1ef3bed..69f54515fe98 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12326,6 +12326,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git
 F:	Documentation/devicetree/bindings/input/
 F:	Documentation/devicetree/bindings/serio/
 F:	Documentation/input/
+F:	drivers/hid/
 F:	drivers/input/
 F:	include/dt-bindings/input/
 F:	include/linux/gameport.h
-- 
2.34.1