From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B861C433F4 for ; Fri, 31 Aug 2018 19:20:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 32E2220841 for ; Fri, 31 Aug 2018 19:20:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="O+KRklmf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 32E2220841 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727631AbeHaX3q (ORCPT ); Fri, 31 Aug 2018 19:29:46 -0400 Received: from mail-qt0-f196.google.com ([209.85.216.196]:43432 "EHLO mail-qt0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727085AbeHaX3q (ORCPT ); Fri, 31 Aug 2018 19:29:46 -0400 Received: by mail-qt0-f196.google.com with SMTP id g53-v6so15732161qtg.10; Fri, 31 Aug 2018 12:20:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=KaDF8Y9NiIVVpO8fIUtLbwriHKMu6JuYaDupLhRe/4A=; b=O+KRklmfzHPxu/J8d+CD0QilmY4TpeJrWu2yN91gP4Cw/UKUE2uqSNLtLWyP4uOLTp 5WY/jQPyI4vhOlIlZPG5MBdl6mhF0RZt+nHAMkxf2qWId/GJwpBW8PATNP5VukF1hb5e 1ej4nv6ByehL7ugDcFw6V4rtsSeCSKJIFgduoreSFT1BH2e1Vgb/Wsu/ufKHe53vc7+w lEWYQFKTX7PynmpzhEBD5y7kz719fr3OUBZDb0XITyMo/AF9pqmQQyl8nrIMUyDRbZ4t ZoyiqFXmljZ2Fw5M/8lKdo1eUR46DcTPA4rfz+RmlJgmdmvVZsjxYwNZAVAZnEnFSCTa mcNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=KaDF8Y9NiIVVpO8fIUtLbwriHKMu6JuYaDupLhRe/4A=; b=aFvBa7Vs2+8E6YoQfssSjHXV++8xzjoTg8pVKdVW0jeAj8xPZA7RrxiV9brbpUmMP0 5YUJZ65SMX1jhbuPc50hIY1I089r9iGgx+5D41W2PINj5cHVfJc8daO6RHhkUylzMsP9 Cl7lyklQL1o+Gz3t+bGg8W6AoURDtsXdz8Xv0zHomEfPYenHbCXil7nZi/Ss7VR5BGXH ykHx4DxaK8xlz03hLK14aNmtQxbdrEf4/y+nCe/cehIJ248UUq/TdpDIEb7VhxEtWpTY Au+oPLsTkbn3bK/BtL2oVcIFvXPW9rEoNPz/mSUSUNTlB7fQ6HrmXJn41YdrQXFGv9qP Q51g== X-Gm-Message-State: APzg51AczbCrb8dwEK1Dmc2j1otHXEHLVJnrPxV6KN5KMeD+7Y7OOhs+ MpEyELyxypnUzj1REXAwCsQ= X-Google-Smtp-Source: ANB0Vdb87CxRvleILM5F6xLq/iTIDkY7pVazJrxoMBoHb3AHzcrQAM092f8qi2pUccn8w9pyTbcIIQ== X-Received: by 2002:a0c:9c09:: with SMTP id v9-v6mr17149613qve.186.1535743251883; Fri, 31 Aug 2018 12:20:51 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.250]) by smtp.gmail.com with ESMTPSA id f53-v6sm6949160qtk.40.2018.08.31.12.20.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 31 Aug 2018 12:20:50 -0700 (PDT) From: Florian Fainelli To: linux-arm-kernel@lists.infradead.org Cc: Florian Fainelli , Rob Herring , Mark Rutland , Ray Jui , Scott Branden , Jon Mason , bcm-kernel-feedback-list@broadcom.com (maintainer:BROADCOM IPROC ARM ARCHITECTURE), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list), andrew@lunn.ch, rmk+kernel@armlinux.org.uk Subject: [PATCH v3 1/3] ARM: dts: NSP: Enable SFP on bcm958625hr Date: Fri, 31 Aug 2018 12:20:37 -0700 Message-Id: <20180831192039.11842-2-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180831192039.11842-1-f.fainelli@gmail.com> References: <20180831192039.11842-1-f.fainelli@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Enable the SFP connected to port 5 of the switch and wire up all GPIOs to the SFP cage. Because of a hardware limitation of the i2c controller on the iProc SoCs which prevents large i2c (> 63 bytes) transactions to work, we use the i2c-gpio interface instead, which does not have that limitation. This allows us to read the SFP module EEPROM, which would not be possible otherwise since it exceeds that size during a single read transfer. Signed-off-by: Florian Fainelli --- arch/arm/boot/dts/bcm958625hr.dts | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm/boot/dts/bcm958625hr.dts b/arch/arm/boot/dts/bcm958625hr.dts index ea3fc194f8f3..a53a2f629d74 100644 --- a/arch/arm/boot/dts/bcm958625hr.dts +++ b/arch/arm/boot/dts/bcm958625hr.dts @@ -58,6 +58,24 @@ open-source; priority = <200>; }; + + /* Hardware I2C block cannot do more than 63 bytes per transfer, + * which would prevent reading from a SFP's EEPROM (256 byte). + */ + i2c1: i2c { + compatible = "i2c-gpio"; + sda-gpios = <&gpioa 5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + scl-gpios = <&gpioa 4 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; + }; + + sfp: sfp { + compatible = "sff,sfp"; + i2c-bus = <&i2c1>; + mod-def0-gpios = <&gpioa 28 GPIO_ACTIVE_LOW>; + los-gpios = <&gpioa 24 GPIO_ACTIVE_HIGH>; + tx-fault-gpios = <&gpioa 30 GPIO_ACTIVE_HIGH>; + tx-disable-gpios = <&gpioa 26 GPIO_ACTIVE_HIGH>; + }; }; &amac0 { @@ -210,6 +228,14 @@ reg = <4>; }; + port@5 { + label = "sfp"; + phy-mode = "sgmii"; + reg = <5>; + sfp = <&sfp>; + managed = "in-band-status"; + }; + port@8 { ethernet = <&amac2>; label = "cpu"; -- 2.17.1