From patchwork Tue Jul 23 20:37:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Ceresoli X-Patchwork-Id: 11055299 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A5336C5 for ; Tue, 23 Jul 2019 20:38:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EECD4286E0 for ; Tue, 23 Jul 2019 20:37:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E2A7F28714; Tue, 23 Jul 2019 20:37:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,RCVD_IN_SORBS_WEB autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 507A8286E0 for ; Tue, 23 Jul 2019 20:37:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389095AbfGWUht (ORCPT ); Tue, 23 Jul 2019 16:37:49 -0400 Received: from hostingweb31-40.netsons.net ([89.40.174.40]:51747 "EHLO hostingweb31-40.netsons.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389038AbfGWUhs (ORCPT ); Tue, 23 Jul 2019 16:37:48 -0400 Received: from [88.149.224.16] (port=34022 helo=melee.fritz.box) by hostingweb31.netsons.net with esmtpa (Exim 4.92) (envelope-from ) id 1hq1Xc-007idA-SF; Tue, 23 Jul 2019 22:37:45 +0200 From: Luca Ceresoli To: linux-media@vger.kernel.org, linux-i2c@vger.kernel.org Cc: Luca Ceresoli , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab , Rob Herring , Mark Rutland , Wolfram Sang , Sakari Ailus , Hans Verkuil , Laurent Pinchart , Kieran Bingham , Jacopo Mondi , Vladimir Zapolskiy , Peter Rosin Subject: [RFC,v2 3/6] media: dt-bindings: add DS90UB954-Q1 video deserializer Date: Tue, 23 Jul 2019 22:37:20 +0200 Message-Id: <20190723203723.11730-4-luca@lucaceresoli.net> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190723203723.11730-1-luca@lucaceresoli.net> References: <20190723203723.11730-1-luca@lucaceresoli.net> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - hostingweb31.netsons.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lucaceresoli.net X-Get-Message-Sender-Via: hostingweb31.netsons.net: authenticated_id: luca+lucaceresoli.net/only user confirmed/virtual account not confirmed X-Authenticated-Sender: hostingweb31.netsons.net: luca@lucaceresoli.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Describe the Texas Instruments DS90UB954-Q1, a 2-input video deserializer with I2C Address Translator and remote GPIOs. Signed-off-by: Luca Ceresoli --- Changes RFCv1 -> RFCv2: - add explicit aliases for the FPD-link RX ports (optional) - add proper remote GPIO description --- .../bindings/media/i2c/ti,ds90ub954-q1.txt | 194 ++++++++++++++++++ 1 file changed, 194 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.txt diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.txt b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.txt new file mode 100644 index 000000000000..73ce21ecc3b6 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.txt @@ -0,0 +1,194 @@ +Texas Instruments DS90UB954-Q1 dual video deserializer +====================================================== + +The TI DS90UB954-Q1 is a MIPI CSI-2 video deserializer that forwards video +streams from up to two FPD-Link 3 connections to a MIPI CSI-2 output. It +also allows access to remote I2C and GPIO. + +Required properties: + + - compatible: must be "ti,ds90ub954-q1" + + - reg: main I2C slave address; optionally aliases for RX port registers + and remote serializers. The main address is mandatory and must be the + first, others are optional and fall back to defaults if not + specified. See "reg-names". + + - reset-gpios: chip reset GPIO, active low (connected to PDB pin of the chip) + - i2c-alias-pool: list of I2C addresses that are known to be available on the + "local" (SoC-to-deser) I2C bus; they will be picked at + runtime and used as aliases to reach remove I2C chips + - gpio-controller + - #gpio-cells: must be 3: FPD-Link 3 RX port number, remote gpio number, flags + +Optional properties: + + - reg-names: names of I2C address used to communicate with the chip, must + match the "reg" values; mandatory if there are 2 or more + addresses + - "main": the main I2C address, used to access shared registers + - "rxport0", "rxport1": I2C alias to access FPD-link RX port specific + registers; must not be used by other slaves on the same bus + - "ser0", "ser1": I2C alias to access the remote serializer connected + on each FPD-link RX port; must not be used by other slaves on the + same bus + - interrupts: interrupt pin from the chip + +Required subnodes: + + - ports: A ports node with one port child node per device input and output + port, in accordance with the video interface bindings defined in + Documentation/devicetree/bindings/media/video-interfaces.txt. The + port nodes are numbered as follows: + + Port Description + ------------------------------------ + 0 Input from FPD-Link 3 RX port 0 + 1 Input from FPD-Link 3 RX port 1 + 2 CSI-2 output + + Each port must have a "remote-chip" subnode that defines the remote + chip (serializer) with at least a "compatible" property + + - i2c-atr: contains one child per RX port, each describes the I2C bus on + the remote side + + Required properties: + - #address-cells = <1>; + - #size-cells = <0>; + + Subnodes: one per each FPD-link RX port, each having: + + Required properties for "i2c-atr" child bus nodes: + - reg: The number of the port where the remove chip is connected + - #address-cells = <1>; + - #size-cells = <0>; + + Optional properties for "i2c-atr" child bus nodes: + - Other properties specific to the remote hardware + - Child nodes conforming to i2c bus binding + + +Device node example +------------------- + +&i2c0 { + deser: deser@3d { + compatible = "ti,ds90ub954-q1"; + reg-names = "main", "rxport0", "rxport1", "ser0", "ser1"; + reg = <0x3d>, <0x40>, <0x41>, <0x44>, <0x45>; + clocks = <&clk_25M>; + interrupt-parent = <&gic>; + interrupts = <3 1 IRQ_TYPE_LEVEL_HIGH>; + reset-gpios = <&gpio_ctl 4 GPIO_ACTIVE_LOW>; + + i2c-alias-pool = /bits/ 16 <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>; + + gpio-controller; + #gpio-cells = <3>; /* rxport, remote gpio num, flags */ + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + ds90ub954_fpd3_in0: endpoint { + remote-endpoint = <&sensor_0_out>; + }; + }; + + port@1 { + reg = <1>; + ds90ub954_fpd3_in1: endpoint { + remote-endpoint = <&sensor_1_out>; + }; + }; + + port@2 { + reg = <2>; + ds90ub954_mipi_out0: endpoint { + data-lanes = <1 2 3 4>; + /* Actually a REFCLK multiplier */ + data-rate = <1600000000>; + remote-endpoint = <&csirx_0_in>; + }; + }; + }; + + i2c-atr { + #address-cells = <1>; + #size-cells = <0>; + + remote_i2c0: i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + }; + + remote_i2c1: i2c@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + }; + }; + }; +}; + +&ds90ub954_fpd3_in0 { + remote-chip { + compatible = "ti,ds90ub953-q1"; + gpio-functions = ; + }; +}; + +&ds90ub954_fpd3_in1 { + remote-chip { + compatible = "ti,ds90ub953-q1"; + gpio-functions = ; + }; +}; + +&remote_i2c0 { + sensor_0@3c { + compatible = "sony,imx274"; + reg = <0x3c>; + + reset-gpios = <&deser 0 0 GPIO_ACTIVE_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + sensor_0_out: endpoint { + remote-endpoint = <&ds90ub954_fpd3_in0>; + }; + }; + }; +}; + +&remote_i2c1 { + sensor_0@3c { + compatible = "sony,imx274"; + reg = <0x3c>; + + reset-gpios = <&deser 1 0 GPIO_ACTIVE_LOW>; + + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + sensor_1_out: endpoint { + remote-endpoint = <&ds90ub954_fpd3_in1>; + }; + }; + }; +};