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Thu, 01 Oct 2026 07:41:37 -0700 (PDT) From: Adam Azuddin To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, neil.armstrong@linaro.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de Cc: jesszhan0024@gmail.com, airlied@gmail.com, simona@ffwll.ch, andersson@kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Adam Azuddin Subject: [PATCH v3 1/2] dt-bindings: display: panel: Add RAiO RA8875 display controller Date: Thu, 1 Oct 2026 22:41:25 +0800 Message-ID: <20261001144128.2336301-2-azuddinadam@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261001144128.2336301-1-azuddinadam@gmail.com> References: <20261001144128.2336301-1-azuddinadam@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The binding is for SPI-connected RA8875 TFT display controller by RAiO Technology Inc. It supports display resolutions of up to 800x480. Assisted-by: LLM Signed-off-by: Adam Azuddin --- .../bindings/display/panel/raio,ra8875.yaml | 77 +++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + 2 files changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/raio,ra8875.yaml diff --git a/Documentation/devicetree/bindings/display/panel/raio,ra8875.yaml b/Documentation/devicetree/bindings/display/panel/raio,ra8875.yaml new file mode 100644 index 000000000000..4283de927b13 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/raio,ra8875.yaml @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/panel/raio,ra8875.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RAiO RA8875 Display Controller + +maintainers: + - Adam Azuddin + +description: + The RA8875 is a TFT LCD controller for panels up to 800x480 pixels. + It can be connected to the controller via 8080/6800 parallel interface, + SPI or I2C. This binding describes the SPI-connected device. + +allOf: + - $ref: panel-common.yaml# + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + const: raio,ra8875 + + reg: + maxItems: 1 + + vdd-supply: + description: + 3.3 V supply for the IO pins, the oscillator IO pins, the ADC pins + and the internal LDO. The 1.8 V core rail is generated internally. + + reset-gpios: + description: + GPIO connected to the active-low RST# pin. Optional, since the board + may instead use an RC reset circuit. + maxItems: 1 + +required: + - compatible + - reg + - display-timings + - vdd-supply + +unevaluatedProperties: false + +examples: + - | + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + panel: display@0 { + compatible = "raio,ra8875"; + reg = <0>; + spi-max-frequency = <16000000>; + vdd-supply = <&vcc_3v3>; + reset-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + + display-timings { + native-mode = <&timing0>; + timing0: timing0 { + clock-frequency = <25000000>; + hactive = <800>; + vactive = <480>; + hfront-porch = <40>; + hsync-len = <40>; + hback-porch = <40>; + vfront-porch = <10>; + vsync-len = <10>; + vback-porch = <20>; + }; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index ba2002969373..99d5113fb035 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1395,6 +1395,8 @@ patternProperties: description: Radxa "^raidsonic,.*": description: RaidSonic Technology GmbH + "^raio,.*": + description: RAiO Technology Inc. "^ralink,.*": description: Mediatek/Ralink Technology Corp. "^ramtron,.*": -- 2.55.0