From patchwork Thu Jun 21 12:32:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Panda X-Patchwork-Id: 932708 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="Cx6ZSh6R"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="jYlTVp3Y"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41BLh24RdSz9s2L for ; Thu, 21 Jun 2018 22:32:50 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933507AbeFUMco (ORCPT ); Thu, 21 Jun 2018 08:32:44 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:48770 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933675AbeFUMcm (ORCPT ); Thu, 21 Jun 2018 08:32:42 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 54BA860AFF; Thu, 21 Jun 2018 12:32:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529584362; bh=NQzS8AcjpHSced0lnjrOnYi0EKA/sNn7RS0dpRuQwAY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Cx6ZSh6RtLqS9HNoYijHuQ6tKsW1x+NYSOTLHPDwJaK2JAEF0FqceqOTmGRowkZHo YdXyOQEMWrshtF9jnNr29Ub1ckcZr6Xt4B5zIZw/Cwj6lbL3D0ORjoxYVZY3zDFqlP qi7ZRsvP7rBLH/AlDpKiKcI4pcoFNk8/o0dBoJ9o= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 Received: from spanda-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: spanda@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 228C0604A6; Thu, 21 Jun 2018 12:32:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529584360; bh=NQzS8AcjpHSced0lnjrOnYi0EKA/sNn7RS0dpRuQwAY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jYlTVp3Y7+KWiDuXMCtnDxjqCB35aAHVBZst7x1uOU4XQRcDpdynzbS0Kwkx1qpkE XVmJqjs1lJyflElwG/iQp0fbkfx5hTgJu+oSNWj6WjIpPEHZEH35Z8f/fRMty/6iEq 7EtzcXb6gSvV8OwKHnsMG2T7NFMNbSnVH4PFEzJU= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 228C0604A6 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=spanda@codeaurora.org From: Sandeep Panda To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Sandeep Panda , robdclark@gmail.com, seanpaul@chromium.org, hoegsberg@chromium.org, ryadav@codeaurora.org, abhinavk@codeaurora.org, jsanka@codeaurora.org, chandanu@codeaurora.org, nganji@codeaurora.org Subject: [PATCH v12 3/5] dt-bindings: drm/bridge: Document sn65dsi86 bridge bindings Date: Thu, 21 Jun 2018 18:02:07 +0530 Message-Id: <1529584329-632-4-git-send-email-spanda@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1529584329-632-1-git-send-email-spanda@codeaurora.org> References: <1529584329-632-1-git-send-email-spanda@codeaurora.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Document the bindings used for the sn65dsi86 DSI to eDP bridge. Changes in v1: - Rephrase the dt-binding descriptions to be more inline with existing bindings (Andrzej Hajda). - Add missing dt-binding that are parsed by corresponding driver (Andrzej Hajda). Changes in v2: - Remove edp panel specific dt-binding entries. Only keep bridge specific entries (Sean Paul). - Remove custom-modes dt entry since its usage is removed from driver also (Sean Paul). - Remove is-pluggable dt entry since this will not be needed anymore (Sean Paul). Changes in v3: - Remove irq-gpio dt entry and instead populate is an interrupt property (Rob Herring). Changes in v4: - Add link to bridge chip datasheet (Stephen Boyd) - Add vpll and vcc regulator supply bindings (Stephen Boyd) - Add ref clk optional dt binding (Stephen Boyd) - Add gpio-controller optional dt binding (Stephen Boyd) Changes in v5: - Use clock property to specify the input refclk (Stephen Boyd). - Update gpio cell and pwm cell numbers (Stephen Boyd). Changes in v6: - Add property to mention the lane mapping scheme and polarity inversion (Stephen Boyd). Changes in v7: - Detail description of lane mapping scheme dt property (Andrzej Hajda/ Rob Herring). - Removed HDP gpio binding, since the bridge uses IRQ signal to determine HPD, and IRQ property is already documented in binding. Changes in v8: - Removed unnecessary explanation of lane mapping and polarity dt property, since these are already explained in media/video-interface dt binidng (Rob Herring). Changes in v9: - Avoid putting re-definition of lane mapping and polarity dt binding (Rob Herring). Changes in v10: - Use interrupts-extended property instead of interrupts to specify interrupt line (Andrzej Hajda). - Move data-lanes and lane-polarity property example to proper place (Andrzej Hajda). Signed-off-by: Sandeep Panda --- .../bindings/display/bridge/ti,sn65dsi86.txt | 86 ++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt new file mode 100644 index 000000000000..c8b8f018356f --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.txt @@ -0,0 +1,86 @@ +SN65DSI86 DSI to eDP bridge chip +-------------------------------- + +This is the binding for Texas Instruments SN65DSI86 bridge. +http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=sn65dsi86&fileType=pdf + +Required properties: +- compatible: Must be "ti,sn65dsi86" +- reg: i2c address of the chip, 0x2d as per datasheet +- enable-gpios: OF device-tree gpio specification for bridge_en pin (active high) + +- vccio-supply: A 1.8V supply that powers up the digital IOs. +- vpll-supply: A 1.8V supply that powers up the displayport PLL. +- vcca-supply: A 1.2V supply that powers up the analog circuits. +- vcc-supply: A 1.2V supply that powers up the digital core. + +Optional properties: +- interrupts-extended: Specifier for the SN65DSI86 interrupt line. + +- ddc-i2c-bus: phandle of the I2C controller used for DDC EDID probing + +- gpio-controller: Marks the device has a GPIO controller. +- #gpio-cells : Should be two. The first cell is the pin number and + the second cell is used to specify flags. + See ../../gpio/gpio.txt for more information. +- #pwm-cells : Should be one. See ../../pwm/pwm.txt for description of + the cell formats. + +- clock-names: should be "refclk" +- clocks: Specification for input reference clock. The reference + clock rate must be 12 MHz, 19.2 MHz, 26 MHz, 27 MHz or 38.4 MHz. + +- data-lanes: See ../../media/video-interface.txt +- lane-polarities: See ../../media/video-interface.txt + +Required nodes: +This device has two video ports. Their connections are modelled using the +OF graph bindings specified in Documentation/devicetree/bindings/graph.txt. + +- Video port 0 for DSI input +- Video port 1 for eDP output + +Example +------- + +edp-bridge@2d { + compatible = "ti,sn65dsi86"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x2d>; + + enable-gpios = <&msmgpio 33 GPIO_ACTIVE_HIGH>; + + interrupts-extended = <&gpio3 4 IRQ_TYPE_EDGE_FALLING>; + + vccio-supply = <&pm8916_l17>; + vcca-supply = <&pm8916_l6>; + vpll-supply = <&pm8916_l17>; + vcc-supply = <&pm8916_l6>; + + clock-names = "refclk"; + clocks = <&input_refclk>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + edp_bridge_in: endpoint { + remote-endpoint = <&dsi_out>; + }; + }; + + port@1 { + reg = <1>; + + edp_bridge_out: endpoint { + data-lanes = <2 1 3 0>; + lane-polarities = <0 1 0 1>; + remote-endpoint = <&edp_panel_in>; + }; + }; + }; +}