linux-kernel - [PATCH v3 1/3] dt-bindings: touchscreen: trivial-touch: Drop 'interrupts' requirement for old Ilitek

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Message-ID: <20260115161858.20226-1-marek.vasut+renesas@mailbox.org>
Date: Thu, 15 Jan 2026 17:18:07 +0100
From: Marek Vasut <marek.vasut+renesas@...lbox.org>
To: linux-input@...r.kernel.org
Cc: Marek Vasut <marek.vasut+renesas@...lbox.org>,
	Frank Li <Frank.Li@....com>,
	Conor Dooley <conor+dt@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Job Noorman <job@...rman.info>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh@...nel.org>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org
Subject: [PATCH v3 1/3] dt-bindings: touchscreen: trivial-touch: Drop 'interrupts' requirement for old Ilitek

The old Ilitek touch controllers V3 and V6 can operate without
interrupt line, in polling mode. Drop the 'interrupts' property
requirement for those four controllers. To avoid overloading the
trivial-touch, fork the old Ilitek V3/V6 touch controller binding
into separate document.

Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org>
---
Cc: Conor Dooley <conor+dt@...nel.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Frank Li <Frank.Li@....com>
Cc: Job Noorman <job@...rman.info>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: Rob Herring <robh@...nel.org>
Cc: devicetree@...r.kernel.org
Cc: linux-input@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-renesas-soc@...r.kernel.org
---
V2: Fork the Ilitek V3/V6 bindings into separate document
V3: Add RB from Frank
---
 .../input/touchscreen/ilitek,ili210x.yaml     | 51 +++++++++++++++++++
 .../input/touchscreen/trivial-touch.yaml      |  4 --
 2 files changed, 51 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/ilitek,ili210x.yaml

diff --git a/Documentation/devicetree/bindings/input/touchscreen/ilitek,ili210x.yaml b/Documentation/devicetree/bindings/input/touchscreen/ilitek,ili210x.yaml
new file mode 100644
index 0000000000000..1d02aaba64f97
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/ilitek,ili210x.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/ilitek,ili210x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI21xx/ILI251x V3/V6 touch screen controller with i2c interface
+
+maintainers:
+  - Frank Li <Frank.Li@....com>
+  - Marek Vasut <marek.vasut+renesas@...lbox.org>
+
+properties:
+  compatible:
+    enum:
+      - ilitek,ili210x
+      - ilitek,ili2117
+      - ilitek,ili2120
+      - ilitek,ili251x
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  wakeup-source: true
+
+allOf:
+  - $ref: touchscreen.yaml
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        touchscreen@41 {
+            compatible = "ilitek,ili2120";
+            reg = <0x41>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
index fa27c6754ca4e..6441d21223caf 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
@@ -23,9 +23,6 @@ properties:
       # Hynitron cstxxx series touchscreen controller
       - hynitron,cst340
       # Ilitek I2C Touchscreen Controller
-      - ilitek,ili210x
-      - ilitek,ili2117
-      - ilitek,ili2120
       - ilitek,ili2130
       - ilitek,ili2131
       - ilitek,ili2132
@@ -33,7 +30,6 @@ properties:
       - ilitek,ili2322
       - ilitek,ili2323
       - ilitek,ili2326
-      - ilitek,ili251x
       - ilitek,ili2520
       - ilitek,ili2521
       # MAXI MAX11801 Resistive touch screen controller with i2c interface
-- 
2.51.0