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Fri, 31 Oct 2025 02:05:37 -0700 (PDT) Received: from ipedrosa-thinkpadx1carbongen12.rmtes.csb ([5.225.139.156]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-477289adaf8sm93454475e9.7.2025.10.31.02.05.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 31 Oct 2025 02:05:37 -0700 (PDT) From: Iker Pedrosa Date: Fri, 31 Oct 2025 10:05:17 +0100 Subject: [PATCH v4 1/3] dt-bindings: display: sitronix,st7920: Add DT schema Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251031-st7920-v4-1-35291f8076b2@gmail.com> References: <20251031-st7920-v4-0-35291f8076b2@gmail.com> In-Reply-To: <20251031-st7920-v4-0-35291f8076b2@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 X-Mailer: b4 0.14.2 Add binding for Sitronix ST7920 display. Signed-off-by: Iker Pedrosa Reviewed-by: Krzysztof Kozlowski --- .../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..c4f006fc41e1f472939725bd82b= 86a649f9b3f56 --- /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 =3D <1>; + #size-cells =3D <0>; + + display@0 { + compatible =3D "sitronix,st7920"; + reg =3D <0>; + vdd-supply =3D <®_5v>; + reset-gpios =3D <&gpio 25 GPIO_ACTIVE_LOW>; + spi-max-frequency =3D <600000>; + spi-cs-high; + }; + }; --=20 2.51.0