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 B4C1DC433F5 for ; Mon, 27 Aug 2018 20:04:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EBEF208B8 for ; Mon, 27 Aug 2018 20:04:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JwosVQIP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6EBEF208B8 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 S1727571AbeH0Xwm (ORCPT ); Mon, 27 Aug 2018 19:52:42 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:38122 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727519AbeH0Xwl (ORCPT ); Mon, 27 Aug 2018 19:52:41 -0400 Received: by mail-pf1-f193.google.com with SMTP id x17-v6so82601pfh.5; Mon, 27 Aug 2018 13:04:37 -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=ReTvAwrgFWOoEexg0hgEP07gzw3p2GvoRnRvhI5zJ5I=; b=JwosVQIPWRKKgl6BPbGfRUNz39BEO++kVHbRLKRBkDtNaJhdcCwcckdpDVNYpde1Pn b/9wvsY1eY0oaR6rqbIcHoKIufQTHtdCozbLuAKXA7g0lc0ktxJs7MHg7oG4DjauBivJ V8Dw2Y1UgNhceDBAf1kg3B6GEb2oZpE5fXETGNHHl+5ONQQJPj9oH0wIqtJ1+ZwJ19e6 3I2jR7fnHb49h9GgJb4Zt4d+RcFi2nB1KWqgRbZ2mWg34JxADBAwPgGP+2Jq0bdszySr MXwG/eZ9LGiVQ0X2EVAXubg/5X7SA6/mo505yhMWJ5Gi4ALqCT7GjlurBPsb3RZzPH// zkgA== 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=ReTvAwrgFWOoEexg0hgEP07gzw3p2GvoRnRvhI5zJ5I=; b=UokaxZN+AzBvetgvBiQBsAdkr4ehmxVeYw+aQ/zAlGDdYUNM6bz2WNNc51hsHxwABI 9KHtNjq8BFiIVv/VnFx7BMbUnowvdr3N2fZ7tTVlRDolAXCmu0sEgHZHdZoYtyLJFil3 ozKTK2e40Al/fvUwdfd5awDN+vJXWH25y0BO6bk9jHnrGdZzenho4GLn4z+RXw2DWIPF +IC3DZCetpS0hetFE5YXmDsjN7KKTBygziEaHjOalRbOoTUeEa5WkgnwCKYHv4bV9lUV klAHoOuyH4wox5JVNf8nJrqedMA6lBVpyf8d+T1P5LQbgvNPtvbVupVCYfJZs4huLlfu njaw== X-Gm-Message-State: APzg51D5wIttga8agQ/NK1fo7sTNWY+0Y1xc2oIAYjvALZUoO4uEqm62 YjSvn2mBsyNwpqSgknDK17Y= X-Google-Smtp-Source: ANB0VdYRMbZwC2WiYP7ODbnwDV7kcsbZd3ICDt5Hp4sxncQGW38SpfUGkCQoithcy90Dqa09TS4AfQ== X-Received: by 2002:a62:7a01:: with SMTP id v1-v6mr15604269pfc.153.1535400276653; Mon, 27 Aug 2018 13:04:36 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.250]) by smtp.gmail.com with ESMTPSA id o21-v6sm148611pfa.54.2018.08.27.13.04.34 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 Aug 2018 13:04:35 -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 1/3] ARM: dts: NSP: Enable SFP on bcm958625hr Date: Mon, 27 Aug 2018 13:03:42 -0700 Message-Id: <20180827200344.16158-2-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180827200344.16158-1-f.fainelli@gmail.com> References: <20180827200344.16158-1-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 (> 256 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 | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm/boot/dts/bcm958625hr.dts b/arch/arm/boot/dts/bcm958625hr.dts index ea3fc194f8f3..05751c895a0e 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 has limitations on number of bytes it can + * transfer, which breaks with SFP/SFF modules. + */ + i2c1: i2c1 { + 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 +228,17 @@ reg = <4>; }; + port@5 { + label = "sfp"; + phy-mode = "sgmii"; + reg = <5>; + sfp = <&sfp>; + fixed-link { + speed = <1000>; + full-duplex; + }; + }; + port@8 { ethernet = <&amac2>; label = "cpu"; -- 2.17.1