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Message-Id: <20251006-st7920-v3-1-4f89d656fa03@gmail.com>
Date: Mon, 06 Oct 2025 19:48:53 +0200
From: Iker Pedrosa <ikerpedrosam@...il.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Javier Martinez Canillas <javierm@...hat.com>,
Iker Pedrosa <ikerpedrosam@...il.com>
Cc: linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
devicetree@...r.kernel.org
Subject: [PATCH v3 1/3] dt-bindings: display: sitronix,st7920: Add DT
schema
Add binding for Sitronix ST7920 display.
Signed-off-by: Iker Pedrosa <ikerpedrosam@...il.com>
---
.../bindings/display/sitronix,st7920.yaml | 50 ++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/sitronix,st7920.yaml b/Documentation/devicetree/bindings/display/sitronix,st7920.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..b4c16825f254f1b8345a2532271042350e3a5e26
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/sitronix,st7920.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sitronix,st7920.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sitronix ST7920 LCD Display Controllers
+
+maintainers:
+ - Iker Pedrosa <ikerpedrosam@...il.com>
+
+description:
+ The Sitronix ST7920 is a controller for monochrome dot-matrix graphical LCDs,
+ most commonly used for 128x64 pixel displays.
+
+properties:
+ compatible:
+ const: sitronix,st7920
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 600000
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ display@0 {
+ compatible = "sitronix,st7920";
+ reg = <0>;
+ spi-max-frequency = <600000>;
+ spi-cs-high;
+ };
+ };
--
2.51.0
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