linux-kernel - [PATCH v2 1/2] dt-bindings: backlight: gpio-backlight: allow multiple GPIOs

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Message-Id: <20260120125036.2203995-2-tessolveupstream@gmail.com>
Date: Tue, 20 Jan 2026 18:20:35 +0530
From: Sudarshan Shetty <tessolveupstream@...il.com>
To: lee@...nel.org,
	danielt@...nel.org,
	jingoohan1@...il.com
Cc: deller@....de,
	pavel@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	dri-devel@...ts.freedesktop.org,
	linux-fbdev@...r.kernel.org,
	linux-leds@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sudarshan Shetty <tessolveupstream@...il.com>
Subject: [PATCH v2 1/2] dt-bindings: backlight: gpio-backlight: allow multiple GPIOs

Update the gpio-backlight binding to support configurations that require
more than one GPIO for enabling/disabling the backlight.

Signed-off-by: Sudarshan Shetty <tessolveupstream@...il.com>
---
 .../leds/backlight/gpio-backlight.yaml        | 24 +++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
index 584030b6b0b9..4e4a856cbcd7 100644
--- a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
+++ b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
@@ -16,8 +16,18 @@ properties:
     const: gpio-backlight
 
   gpios:
-    description: The gpio that is used for enabling/disabling the backlight.
-    maxItems: 1
+    description: |
+      The gpio that is used for enabling/disabling the backlight.
+      Multiple GPIOs can be specified for panels that require several
+      enable signals. All GPIOs are controlled together.
+    type: array
+    minItems: 1
+    items:
+      type: array
+      minItems: 3
+      maxItems: 3
+      items:
+        type: integer
 
   default-on:
     description: enable the backlight at boot.
@@ -38,4 +48,14 @@ examples:
         default-on;
     };
 
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    backlight {
+      compatible = "gpio-backlight";
+      gpios = <&gpio3 4 GPIO_ACTIVE_HIGH>,
+              <&gpio3 5 GPIO_ACTIVE_HIGH>,
+              <&gpio3 6 GPIO_ACTIVE_HIGH>;
+      default-on;
+    };
+
 ...
-- 
2.34.1