[PATCH v2 1/4] dt-bindings: input: Add Himax HX83102J touchscreen

[Allen_Lin <allencl_lin@hotmail.com>]

Add the HX83102j touchscreen device tree bindings documents.
HX83102j is a Himax TDDI touchscreen controller.
It's power sequence should be bound with a lcm driver, thus it
needs to be a panel follower. Others are the same as normal SPI
touchscreen controller.

Signed-off-by: Allen_Lin <allencl_lin@hotmail.com>
---
 .../input/touchscreen/himax,hx83102j.yaml     | 100 ++++++++++++++++++
 MAINTAINERS                                   |   6 ++
 2 files changed, 106 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml b/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
new file mode 100644
index 000000000000..fe79129f704a
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/himax,hx83102j.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Himax hx83102j touchscreen
+
+maintainers:
+  - Allen Lin <allencl_lin@hotmail.com>
+
+description:
+  This Himax hx83102j touchscreen uses the spi protocol.
+
+allOf:
+  - $ref: /schemas/input/touchscreen/touchscreen.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    const: himax,hx83102j
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  vccd-supply:
+    description: A phandle for the regualtor supplying IO power.
+ 
+  vsn-supply:
+    description: Negative supply regulator.
+ 
+  vsp-supply:
+    description: Positive supply regulator.
+
+  ddreset-gpios:
+    description: A phandle of gpio for display reset controlled by the LCD driver.
+      This is the master reset, if this reset is triggered, the TP reset will 
+      also be triggered.
+  
+  spi-cpha: true
+
+  spi-cpol: true
+
+  spi-max-frequency: true
+
+  panel: true
+
+  himax,firmware-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      Specify the file name for firmware loading.
+
+  himax,pid:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      PID for HID device, used to validate firmware.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - reset-gpios
+  - panel
+  - vccd-supply
+  - vsn-supply
+  - vsp-supply
+  - ddreset-gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      ap_ts: touchscreen@0 {
+        compatible = "himax,hx83102j";
+        reg = <0>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&touch_int0 &touch_reset>;
+        reset-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+        spi-cpha;
+        spi-cpol;
+        interrupt-parent = <&gpio1>;
+        interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+        panel = <&panel>;
+        vccd-supply = <&regulator>;
+        vsn-supply = <&regulator>;
+        vsp-supply = <&regulator>;
+        ddreset-gpios = <&gpio1>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 43b39956694a..aa51c60fd66d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9669,6 +9669,12 @@ L:	linux-kernel@vger.kernel.org
 S:	Maintained
 F:	drivers/misc/hisi_hikey_usb.c
 
+HIMAX HID HX83102J TOUCHSCREEN
+M:	Allen Lin <allencl_lin@hotmail.com>
+L:	linux-input@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/input/touchscreen/himax,hx83102j.yaml
+
 HIMAX HX83112B TOUCHSCREEN SUPPORT
 M:	Job Noorman <job@noorman.info>
 L:	linux-input@vger.kernel.org
-- 
2.34.1