linux-kernel - [PATCH 1/2] dt-bindings: touchscreen: trivial-touch: Drop 'interrupts' requirement for old Ilitek

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Message-ID: <20260112234534.225954-1-marek.vasut+renesas@mailbox.org>
Date: Tue, 13 Jan 2026 00:44:56 +0100
From: Marek Vasut <marek.vasut+renesas@...lbox.org>
To: linux-input@...r.kernel.org
Cc: Marek Vasut <marek.vasut+renesas@...lbox.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Frank Li <Frank.Li@....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 1/2] 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.

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
---
 .../input/touchscreen/trivial-touch.yaml      | 20 +++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
index fa27c6754ca4e..a2145a62f9723 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
@@ -57,13 +57,25 @@ properties:
 
   wakeup-source: true
 
-allOf:
-  - $ref: touchscreen.yaml
-
 required:
   - compatible
   - reg
-  - interrupts
+
+allOf:
+  - $ref: touchscreen.yaml
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - ilitek,ili210x
+                - ilitek,ili2117
+                - ilitek,ili2120
+                - ilitek,ili251x
+    then:
+      required:
+        - interrupts
 
 unevaluatedProperties: false
 
-- 
2.51.0