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Wed, 26 Nov 2025 09:04:31 -0800 (PST) From: Iker Pedrosa Date: Wed, 26 Nov 2025 18:03:49 +0100 Subject: [PATCH v5 1/3] dt-bindings: display: sitronix,st7920: Add DT schema Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251126-st7920-v5-1-64eda5267d35@gmail.com> References: <20251126-st7920-v5-0-64eda5267d35@gmail.com> In-Reply-To: <20251126-st7920-v5-0-64eda5267d35@gmail.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Javier Martinez Canillas , Iker Pedrosa Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 Add binding for Sitronix ST7920 display. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Iker Pedrosa --- .../bindings/display/sitronix,st7920.yaml | 58 ++++++++++++++++++++++ 1 file changed, 58 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..c4f006fc41e1f472939725bd82b86a649f9b3f56 --- /dev/null +++ b/Documentation/devicetree/bindings/display/sitronix,st7920.yaml @@ -0,0 +1,58 @@ +# 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 + +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 + + vdd-supply: + description: Regulator that provides 5V Vdd power supply + + reset-gpios: + 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 + + spi { + #address-cells = <1>; + #size-cells = <0>; + + display@0 { + compatible = "sitronix,st7920"; + reg = <0>; + vdd-supply = <®_5v>; + reset-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + spi-max-frequency = <600000>; + spi-cs-high; + }; + }; -- 2.52.0