linux-kernel - [PATCH v15 1/4] dt-bindings: input: document Goodix Berlin Touchscreen IC

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Date: Mon, 29 Jan 2024 10:16:35 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 linux-input@...r.kernel.org
Cc: Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bastien Nocera <hadess@...ess.net>, 
 Hans de Goede <hdegoede@...hat.com>, Henrik Rydberg <rydberg@...math.org>, 
 Jeff LaBundy <jeff@...undy.com>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Neil Armstrong <neil.armstrong@...aro.org>, Rob Herring <robh@...nel.org>
Subject: [PATCH v15 1/4] dt-bindings: input: document Goodix Berlin
 Touchscreen IC

Document the Goodix GT9916 wich is part of the "Berlin" serie
of Touchscreen controllers IC from Goodix.

Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 .../bindings/input/touchscreen/goodix,gt9916.yaml  | 95 ++++++++++++++++++++++
 1 file changed, 95 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml b/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml
new file mode 100644
index 000000000000..d90f045ac06c
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/goodix,gt9916.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Goodix Berlin series touchscreen controller
+
+description: The Goodix Berlin series of touchscreen controllers
+  be connected to either I2C or SPI buses.
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@...aro.org>
+
+allOf:
+  - $ref: touchscreen.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - goodix,gt9916
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  avdd-supply:
+    description: Analog power supply regulator on AVDD pin
+
+  vddio-supply:
+    description: power supply regulator on VDDIO pin
+
+  spi-max-frequency: true
+  touchscreen-inverted-x: true
+  touchscreen-inverted-y: true
+  touchscreen-size-x: true
+  touchscreen-size-y: true
+  touchscreen-swapped-x-y: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - avdd-supply
+  - touchscreen-size-x
+  - touchscreen-size-y
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      touchscreen@5d {
+        compatible = "goodix,gt9916";
+        reg = <0x5d>;
+        interrupt-parent = <&gpio>;
+        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
+        avdd-supply = <&ts_avdd>;
+        touchscreen-size-x = <1024>;
+        touchscreen-size-y = <768>;
+      };
+    };
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      num-cs = <1>;
+      cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+      touchscreen@0 {
+        compatible = "goodix,gt9916";
+        reg = <0>;
+        interrupt-parent = <&gpio>;
+        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
+        avdd-supply = <&ts_avdd>;
+        spi-max-frequency = <1000000>;
+        touchscreen-size-x = <1024>;
+        touchscreen-size-y = <768>;
+      };
+    };
+
+...

-- 
2.34.1