From patchwork Tue Apr 30 13:19:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Massot X-Patchwork-Id: 793556 Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0FB2171669; Tue, 30 Apr 2024 13:20:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.235.227.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714483236; cv=none; b=b6MClbROBGHqs3DOmBuKdx+CA91HB9qqtrwl3Mu6+AlK6XAgiKhXhr+fN72Ae8k1KgFrjWnsT7LVeff1CvMYDznYDsXU8jFvQiLbXuCKL8vDs2xSJvAZ5+x9JMEwwGV//heeLmNedfb/qtHn/VcphfRV5fOekvy9jRL1Xw7oauE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714483236; c=relaxed/simple; bh=qZaK9Bh1M+ODKzlAgLfpqqh3JU5aWG2Nd+I6gy9XSPU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=PxHa/K3PUrxCHuPhBn4Tm3nlJaON1/OCpMxcFz7kGNO6aNTfBlxqRg/tAGm0a4s6FI/FIOKyJPAcRfeH26Yeyl4Iv1N7xdfO0WvbUb1IZc4/apilmrAW3AcXXdMLyYcReY0fkqm5p8ncXcpfoVdTPzF3r+l5OwZQAB4KhsnGoJQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=yycm5S8P; arc=none smtp.client-ip=46.235.227.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="yycm5S8P" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1714483233; bh=qZaK9Bh1M+ODKzlAgLfpqqh3JU5aWG2Nd+I6gy9XSPU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yycm5S8PTxTSiCEBtX2p1TWV7scRFLvJ4vaxqkRv13Lndw8vdwtxWyLKah86dYkX8 LHzVTKJ8NR5PNlBZoDVGPl3pN/nulpyszkom6JIeMAVxU746BS0V5JxdpDYs56J+KA ZVQ+ypxPvIj8tSVs2E7tDaQligBrTZJvFOD0ppqsLhA3rddqT3ce3zdgsql/uITmOD IbgjrWaMBmiJw+WWkzmK2W2r4W9OoUo7ntzHDD/N7GygNf0EIO8bctrj56AOPpg2AV CRPjnD9Wy1fqYkrPm2DEZVDFMZdOAqemdPGoCwu+2AOdpyH3k9MApPpw2oA3CmVmYB 2lKCl0omM0EEQ== Received: from apertis.home (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: jmassot) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 5FAAF378205B; Tue, 30 Apr 2024 13:20:32 +0000 (UTC) From: Julien Massot To: linux-media@vger.kernel.org, sakari.ailus@iki.fi Cc: devicetree@vger.kernel.org, kernel@collabora.com, linux-kernel@vger.kernel.org, mchehab@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, Julien Massot , Conor Dooley Subject: [PATCH v7 2/5] dt-bindings: media: add Maxim MAX96714 GMSL2 Deserializer Date: Tue, 30 Apr 2024 15:19:28 +0200 Message-ID: <20240430131931.166012-3-julien.massot@collabora.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240430131931.166012-1-julien.massot@collabora.com> References: <20240430131931.166012-1-julien.massot@collabora.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add DT bindings for Maxim MAX96714 GMSL2 Deserializer. Reviewed-by: Conor Dooley Signed-off-by: Julien Massot --- Change since v6: - Remove 'bus-type' serializer property in the example Change since v5: - Reverse the fallback MAX96714 can fallback to MAX96714F - Use const instead of enum for MAX96714F compatible Change since v4: - Add compatible for MAX96714 and use it as a fallback for MAX96714F - Remove extra '|' for decriptions - Reference 'i2c-gate' instead of 'i2c-controller' Change since v3: - Renamed file to maxim,max96714.yaml dropped the 'f' suffix - Removed mention to C-PHY since it's not supported by MAX96714 deserializers - Removed bus-type requirement on CSI endpoint since the device only support D-PHY - Removed the clock-lanes property in the dt example Change since v2: - remove reg description - rename enable gpio to powerdown - use generic node name: i2c, serializer, deserializer --- .../bindings/media/i2c/maxim,max96714.yaml | 174 ++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml new file mode 100644 index 000000000000..3ace50e11921 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml @@ -0,0 +1,174 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2024 Collabora Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/maxim,max96714.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX96714 GMSL2 to CSI-2 Deserializer + +maintainers: + - Julien Massot + +description: + The MAX96714 deserializer converts GMSL2 serial inputs into MIPI + CSI-2 D-PHY formatted output. The device allows the GMSL2 link to + simultaneously transmit bidirectional control-channel data while forward + video transmissions are in progress. The MAX96714 can connect to one + remotely located serializer using industry-standard coax or STP + interconnects. The device cans operate in pixel or tunnel mode. In pixel mode + the MAX96714 can select individual video stream, while the tunnel mode forward all + the MIPI data received by the serializer. + + The GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the + forward direction and 187.5Mbps in the reverse direction. + MAX96714F only supports a fixed rate of 3Gbps in the forward direction. + +properties: + compatible: + oneOf: + - const: maxim,max96714f + - items: + - enum: + - maxim,max96714 + - const: maxim,max96714f + + reg: + maxItems: 1 + + powerdown-gpios: + maxItems: 1 + description: + Specifier for the GPIO connected to the PWDNB pin. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + unevaluatedProperties: false + description: GMSL Input + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + description: + Endpoint for GMSL2-Link port. + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: CSI-2 Output port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + minItems: 1 + maxItems: 4 + + lane-polarities: + minItems: 1 + maxItems: 5 + + link-frequencies: + maxItems: 1 + + required: + - data-lanes + + required: + - port@1 + + i2c-gate: + $ref: /schemas/i2c/i2c-gate.yaml + unevaluatedProperties: false + description: + The MAX96714 will pass through and forward the I2C requests from the + incoming I2C bus over the GMSL2 link. Therefore it supports an i2c-gate + subnode to configure a serializer. + + port0-poc-supply: + description: Regulator providing Power over Coax for the GMSL port + +required: + - compatible + - reg + - ports + +additionalProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + deserializer@28 { + compatible = "maxim,max96714f"; + reg = <0x28>; + powerdown-gpios = <&main_gpio0 37 GPIO_ACTIVE_LOW>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + max96714_gmsl_in: endpoint { + remote-endpoint = <&max96917f_gmsl_out>; + }; + }; + + port@1 { + reg = <1>; + max96714_csi_out: endpoint { + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <400000000>; + remote-endpoint = <&csi_in>; + }; + }; + }; + + i2c-gate { + #address-cells = <1>; + #size-cells = <0>; + + 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 { + data-lanes = <1 2>; + lane-polarities = <1 0 1>; + remote-endpoint = <&sensor_out>; + }; + }; + + port@1 { + reg = <1>; + max96917f_gmsl_out: endpoint { + remote-endpoint = <&max96714_gmsl_in>; + }; + }; + }; + }; + }; + }; + }; +...