From patchwork Fri Apr 17 10:34:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kieran Bingham X-Patchwork-Id: 11494711 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 445B7912 for ; Fri, 17 Apr 2020 10:35:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2854122201 for ; Fri, 17 Apr 2020 10:35:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="ozEJPY3/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726551AbgDQKem (ORCPT ); Fri, 17 Apr 2020 06:34:42 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:50114 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728861AbgDQKej (ORCPT ); Fri, 17 Apr 2020 06:34:39 -0400 Received: from Q.local (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id CC2BBA4C; Fri, 17 Apr 2020 12:34:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1587119673; bh=EiqW1OoRRA7xpL2oEY+Qsj1fO2/fAGyXfKzVYO1zftE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ozEJPY3/XYuyZVvXG+t/SAarN55tRAUL/ryDMQtknBoTcb/sBUMTglrproRizqmh2 Pvpx7OEyenOEJhdk6FwObGq5oYa3tzYu9tNQijJUDmuTQDYja/tp5JcOOnrNfoemYK KJQtBizjXg+VGSd2AA8ZPG+pGPpNkWavcgV0gFfI= From: Kieran Bingham To: linux-renesas-soc@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab Cc: Kieran Bingham , Laurent Pinchart , Jacopo Mondi , =?utf-8?q?Niklas_S=C3=B6derlund?= , sakari.ailus@iki.fi, Hans Verkuil , Hyun Kwon , Manivannan Sadhasivam , Rob Herring , Laurent Pinchart , Jacopo Mondi , Kieran Bingham , =?utf-8?q?Niklas_?= =?utf-8?q?S=C3=B6derlund?= , Rob Herring Subject: [PATCH v8 1/4] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286 Date: Fri, 17 Apr 2020 11:34:21 +0100 Message-Id: <20200417103424.5875-2-kieran.bingham+renesas@ideasonboard.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200417103424.5875-1-kieran.bingham+renesas@ideasonboard.com> References: <20200417103424.5875-1-kieran.bingham+renesas@ideasonboard.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Laurent Pinchart The MAX9286 deserializes video data received on up to 4 Gigabit Multimedia Serial Links (GMSL) and outputs them on a CSI-2 port using up to 4 data lanes. Signed-off-by: Laurent Pinchart Signed-off-by: Jacopo Mondi Signed-off-by: Kieran Bingham Reviewed-by: Niklas Söderlund Signed-off-by: Niklas Söderlund Reviewed-by: Rob Herring --- v7: - Collect Rob's RB tag - Remove redundant maxItems from remote-endpoints - Fix SPDX licence tag --- .../bindings/media/i2c/maxim,max9286.yaml | 287 ++++++++++++++++++ 1 file changed, 287 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml new file mode 100644 index 000000000000..f9d3e5712c59 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml @@ -0,0 +1,287 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2019 Renesas Electronics Corp. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/maxim,max9286.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim Integrated Quad GMSL Deserializer + +maintainers: + - Jacopo Mondi + - Kieran Bingham + - Laurent Pinchart + - Niklas Söderlund + +description: | + The MAX9286 deserializer receives video data on up to 4 Gigabit Multimedia + Serial Links (GMSL) and outputs them on a CSI-2 D-PHY port using up to 4 data + lanes. + + In addition to video data, the GMSL links carry a bidirectional control + channel that encapsulates I2C messages. The MAX9286 forwards all I2C traffic + not addressed to itself to the other side of the links, where a GMSL + serializer will output it on a local I2C bus. In the other direction all I2C + traffic received over GMSL by the MAX9286 is output on the local I2C bus. + +properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + compatible: + const: maxim,max9286 + + reg: + description: I2C device address + maxItems: 1 + + poc-supply: + description: Regulator providing Power over Coax to the cameras + maxItems: 1 + + enable-gpios: + description: GPIO connected to the \#PWDN pin with inverted polarity + maxItems: 1 + + ports: + type: object + description: | + The connections to the MAX9286 GMSL and its endpoint nodes are modelled + using the OF graph bindings in accordance with the video interface + bindings defined in + Documentation/devicetree/bindings/media/video-interfaces.txt. + + The following table lists the port number corresponding to each device + port. + + Port Description + ---------------------------------------- + Port 0 GMSL Input 0 + Port 1 GMSL Input 1 + Port 2 GMSL Input 2 + Port 3 GMSL Input 3 + Port 4 CSI-2 Output + + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + port@[0-3]: + type: object + properties: + reg: + enum: [ 0, 1, 2, 3 ] + + endpoint: + type: object + + properties: + remote-endpoint: + description: | + phandle to the remote GMSL source endpoint subnode in the + remote node port. + + required: + - remote-endpoint + + required: + - reg + - endpoint + + additionalProperties: false + + port@4: + type: object + properties: + reg: + const: 4 + + endpoint: + type: object + + properties: + remote-endpoint: + description: phandle to the remote CSI-2 sink endpoint. + + data-lanes: + description: array of physical CSI-2 data lane indexes. + + required: + - remote-endpoint + - data-lanes + + required: + - reg + - endpoint + + additionalProperties: false + + required: + - port@4 + + i2c-mux: + type: object + description: | + Each GMSL link is modelled as a child bus of an i2c bus + multiplexer/switch, in accordance with bindings described in + Documentation/devicetree/bindings/i2c/i2c-mux.txt. The serializer + device on the remote end of the GMSL link shall be modelled as a child + node of the corresponding I2C bus. + + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + additionalProperties: false + +required: + - compatible + - reg + - ports + - i2c-mux + +additionalProperties: false + +examples: + - | + #include + + i2c@e66d8000 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <0 0xe66d8000 0 0x40>; + + gmsl-deserializer@2c { + compatible = "maxim,max9286"; + reg = <0x2c>; + poc-supply = <&camera_poc_12v>; + enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + max9286_in0: endpoint { + remote-endpoint = <&rdacm20_out0>; + }; + }; + + port@1 { + reg = <1>; + + max9286_in1: endpoint { + remote-endpoint = <&rdacm20_out1>; + }; + }; + + port@2 { + reg = <2>; + + max9286_in2: endpoint { + remote-endpoint = <&rdacm20_out2>; + }; + }; + + port@3 { + reg = <3>; + + max9286_in3: endpoint { + remote-endpoint = <&rdacm20_out3>; + }; + }; + + port@4 { + reg = <4>; + + max9286_out: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&csi40_in>; + }; + }; + }; + + i2c-mux { + #address-cells = <1>; + #size-cells = <0>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <0>; + + camera@51 { + reg = <0x51>; + + port { + rdacm20_out0: endpoint { + remote-endpoint = <&max9286_in0>; + }; + }; + + }; + }; + + i2c@1 { + #address-cells = <1>; + #size-cells = <0>; + reg = <1>; + + camera@52 { + reg = <0x52>; + + port { + rdacm20_out1: endpoint { + remote-endpoint = <&max9286_in1>; + }; + }; + }; + }; + + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + + camera@53 { + reg = <0x53>; + + port { + rdacm20_out2: endpoint { + remote-endpoint = <&max9286_in2>; + }; + }; + }; + }; + + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + + camera@54 { + reg = <0x54>; + + port { + rdacm20_out3: endpoint { + remote-endpoint = <&max9286_in3>; + }; + }; + }; + }; + }; + }; + };