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Tue, 5 Mar 2024 15:26:37 +0000 (UTC) From: Julien Massot To: linux-media@vger.kernel.org Cc: kernel@collabora.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mchehab@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, sakari.ailus@iki.fi, Julien Massot Subject: [PATCH v4 1/4] dt-bindings: media: add Maxim MAX96717 GMSL2 Serializer Date: Tue, 5 Mar 2024 16:26:05 +0100 Message-ID: <20240305152608.287527-2-julien.massot@collabora.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240305152608.287527-1-julien.massot@collabora.com> References: <20240305152608.287527-1-julien.massot@collabora.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add DT bindings for Maxim MAX96717 GMSL2 Serializer. Signed-off-by: Julien Massot --- Change since v3: - Renamed file to maxim,max96717.yaml dropped the 'f' suffix - Added lane-polarities and bus type properties to the CSI endpoint Change since v2: - remove reg description - add data lanes min/maxItems - Use generic node name --- .../bindings/media/i2c/maxim,max96717.yaml | 158 ++++++++++++++++++ 1 file changed, 158 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml new file mode 100644 index 000000000000..83f4f1068709 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717.yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2024 Collabora Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/maxim,max96717.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MAX96717 CSI-2 to GMSL2 Serializer + +maintainers: + - Julien Massot + +description: | + The MAX96717F serializer converts MIPI CSI-2 D-PHY or C-PHY formatted input + into GMSL2 serial outputs. The device allows the GMSL2 link to + simultaneously transmit bidirectional control-channel data while forward + video transmissions are in progress. The MAX96717F can connect to one + remotely located deserializer using industry-standard coax or STP + interconnects. The device cans operate in pixel or tunnel mode. In pixel mode + the MAX96717F can select the MIPI datatype, while the tunnel mode forward all the MIPI + data received by the serializer. + The MAX96717F supports Reference Over Reverse (channel), + to generate a clock output for the sensor from the GMSL reverse channel. + + The GMSL2 serial link operates at a fixed rate of 3Gbps in the + forward direction and 187.5Mbps in the reverse direction. + +properties: + compatible: + const: maxim,max96717f + + '#gpio-cells': + const: 2 + description: + First cell is the GPIO pin number, second cell is the flags. The GPIO pin + number must be in range of [0, 10]. + + gpio-controller: true + + '#clock-cells': + const: 0 + + reg: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: CSI-2 Input port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + minItems: 1 + maxItems: 4 + + lane-polarities: + minItems: 1 + maxItems: 5 + + bus-type: + enum: + - 1 # MEDIA_BUS_TYPE_CSI2_CPHY + - 4 # MEDIA_BUS_TYPE_CSI2_DPHY + + required: + - data-lanes + - bus-type + + port@1: + $ref: /schemas/graph.yaml#/properties/port + unevaluatedProperties: false + description: GMSL Output port + + required: + - port@1 + + i2c-gate: + $ref: /schemas/i2c/i2c-controller.yaml + unevaluatedProperties: false + description: + The MAX96717F will forward the I2C requests from the + incoming GMSL2 link. Therefore, it supports an i2c-gate + subnode to configure a sensor. + +required: + - compatible + - reg + - ports + +additionalProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + serializer: serializer@40 { + compatible = "maxim,max96717f"; + reg = <0x40>; + gpio-controller; + #gpio-cells = <2>; + #clock-cells = <0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + max96717f_csi_in: endpoint { + bus-type = ; + data-lanes = <1 2 3 4>; + remote-endpoint = <&sensor_out>; + }; + }; + + port@1 { + reg = <1>; + max96917f_gmsl_out: endpoint { + remote-endpoint = <&deser_gmsl_in>; + }; + }; + }; + + i2c-gate { + #address-cells = <1>; + #size-cells = <0>; + sensor@10 { + compatible = "st,st-vgxy61"; + reg = <0x10>; + reset-gpios = <&serializer 0 GPIO_ACTIVE_LOW>; + clocks = <&serializer>; + VCORE-supply = <&v1v2>; + VDDIO-supply = <&v1v8>; + VANA-supply = <&v2v8>; + port { + sensor_out: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&max96717f_csi_in>; + }; + }; + }; + }; + }; + }; +...