linux-kernel - [PATCH 1/2] dt-bindings: input: document Novatek NVT touchscreen controller

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Message-Id: <20240521-nvt-ts-devicetree-regulator-support-v1-1-8d766c639dca@gmail.com>
Date: Tue, 21 May 2024 07:09:45 -0500
From: Joel Selvaraj via B4 Relay <devnull+joelselvaraj.oss.gmail.com@...nel.org>
To: Hans de Goede <hdegoede@...hat.com>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-input@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Joel Selvaraj <joelselvaraj.oss@...il.com>
Subject: [PATCH 1/2] dt-bindings: input: document Novatek NVT touchscreen
 controller

From: Joel Selvaraj <joelselvaraj.oss@...il.com>

Document the Novatek NVT touchscreen driver which is used in devices like
the Xiaomi Poco F1 [1]. Also, include the devictree binding file in the
MAINTAINERS file.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/qcom/sdm845-xiaomi-beryllium-tianma.dts?h=v6.9

Signed-off-by: Joel Selvaraj <joelselvaraj.oss@...il.com>
---
 .../bindings/input/touchscreen/novatek,nvt-ts.yaml | 62 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 63 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml b/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
new file mode 100644
index 0000000000000..7839c6a028e4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/novatek,nvt-ts.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Novatek NVT Touchscreen Controller
+
+maintainers:
+  - Hans de Goede <hdegoede@...hat.com>
+
+allOf:
+  - $ref: touchscreen.yaml#
+
+properties:
+  compatible:
+    enum:
+      - novatek,nvt-ts
+      - novatek,nt36672a-ts
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  vcc-supply: true
+  iovcc-supply: true
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        touchscreen@1 {
+          compatible = "novatek,nt36672a-ts";
+          reg = <0x01>;
+          interrupts-extended = <&tlmm 31 IRQ_TYPE_EDGE_RISING>;
+          reset-gpios = <&tlmm 32 GPIO_ACTIVE_LOW>;
+          vcc-supply = <&vreg_l22a_2p85>;
+          iovcc-supply = <&vreg_l14a_1p8>;
+          pinctrl-0 = <&ts_int_default &ts_reset_default>;
+          pinctrl-1 = <&ts_int_sleep &ts_reset_sleep>;
+          pinctrl-names = "default", "sleep";
+          touchscreen-size-x = <1080>;
+          touchscreen-size-y = <2246>;
+        };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 90754a451bcfc..e1f744992b15f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15942,6 +15942,7 @@ NOVATEK NVT-TS I2C TOUCHSCREEN DRIVER
 M:	Hans de Goede <hdegoede@...hat.com>
 L:	linux-input@...r.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
 F:	drivers/input/touchscreen/novatek-nvt-ts.c
 
 NSDEPS

-- 
2.45.1