linux-kernel - [PATCH RFC 1/3] dt-bindings: input: elan: Introduce Elan eKTP1059 Touchpad

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Message-Id: <20250825-ektp-submit-v1-1-1dd476c1277b@kemnade.info>
Date: Mon, 25 Aug 2025 00:07:28 +0200
From: Andreas Kemnade <andreas@...nade.info>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Henrik Rydberg <rydberg@...math.org>, 
 Tony Lindgren <tony@...mide.com>, hns@...delico.com
Cc: linux-input@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org, 
 Andreas Kemnade <andreas@...nade.info>
Subject: [PATCH RFC 1/3] dt-bindings: input: elan: Introduce Elan eKTP1059
 Touchpad

The Elan eKTP1059 Touchpad is seen in the Epson Moverio BT-200
attached via SPI. Add a binding for this chip. Little is known.

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
 .../devicetree/bindings/input/elan,ektp1059.yaml   | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/elan,ektp1059.yaml b/Documentation/devicetree/bindings/input/elan,ektp1059.yaml
new file mode 100644
index 000000000000..a10256a271e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/elan,ektp1059.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/elan,ektp1059.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Elantech SPI Touchpad
+
+maintainers:
+  - Andreas Kemnade <andreas@...nade.info>
+
+allOf:
+  - $ref: touchscreen/touchscreen.yaml#
+
+properties:
+  compatible:
+    const: elan,ektp1059
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchpad@0 {
+            compatible = "elan,ektp1059";
+            reg = <0x0>;
+            interrupt-parent = <&gpio4>;
+            interrupts = <0x0 IRQ_TYPE_LEVEL_LOW>;
+        };
+    };

-- 
2.39.5