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Tue, 10 Nov 2026 05:05:26 -0800 (PST) Received: from marchy ([2405:3800:918:486f:ee8e:77ff:fed4:d18b]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2edbc1b81f3sm6274425ad.26.2026.11.10.05.05.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Nov 2026 05:05:26 -0800 (PST) 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, azuddinadam@gmail.com Subject: [PATCH v6 1/2] dt-bindings: display: panel: Add RAiO RA8875 display controller Date: Tue, 10 Nov 2026 21:05:13 +0800 Message-ID: <20261110130515.45819-2-azuddinadam@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261110130515.45819-1-azuddinadam@gmail.com> References: <20261110130515.45819-1-azuddinadam@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The RA8875 is an SPI-connected TFT display controller by RAiO Technology Inc. It supports display resolutions of up to 800x480. Signed-off-by: Adam Azuddin --- .../bindings/display/panel/raio,ra8875.yaml | 86 +++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.yaml | 2 + 2 files changed, 88 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..4c72130f0dbe --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/raio,ra8875.yaml @@ -0,0 +1,86 @@ +# 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 host via 8080/6800 parallel interface, + SPI or I2C. + +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 + + interrupts: + description: + INT# pin, active low. Signals RA8875 interrupt events such as touch + panel, key scan, DMA, BTE and font access completion. + maxItems: 1 + +required: + - compatible + - reg + - display-timings + - vdd-supply + +unevaluatedProperties: false + +examples: + - | + #include + #include + + spi { + #address-cells = <1>; + #size-cells = <0>; + + display@0 { + compatible = "raio,ra8875"; + reg = <0>; + spi-max-frequency = <16000000>; + vdd-supply = <&vcc_3v3>; + reset-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + interrupt-parent = <&gpio>; + interrupts = <5 IRQ_TYPE_LEVEL_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 7602034374d7..c834ad2eb582 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1411,6 +1411,8 @@ patternProperties: description: Radxa "^raidsonic,.*": description: RaidSonic Technology GmbH + "^raio,.*": + description: RAiO Technology Inc. "^ralink,.*": description: Mediatek/Ralink Technology Corp. "^ramtron,.*": -- 2.55.0