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 11585C433F4 for ; Tue, 28 Aug 2018 17:54:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C10BE2064A for ; Tue, 28 Aug 2018 17:54:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="hhPxZtss" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C10BE2064A 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 S1727553AbeH1VrV (ORCPT ); Tue, 28 Aug 2018 17:47:21 -0400 Received: from mail-pl1-f196.google.com ([209.85.214.196]:41012 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727040AbeH1VrU (ORCPT ); Tue, 28 Aug 2018 17:47:20 -0400 Received: by mail-pl1-f196.google.com with SMTP id b12-v6so1048464plr.8; Tue, 28 Aug 2018 10:54:34 -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=R8MDTaGU//iqm0vbcxHeF2lK9GzB0/8f29KZfhaAPV4=; b=hhPxZtssdfWe6ylIJ9CU8xNx4d+OVRwqXDeIgMEGIP23fjpHVourxxL1GyfzP29L4q ntxifcyw9IzO30Q53emJhE/i0w6aJt21PtK5hWaHXCRLBuIBFiqOzpNivKDNqYb1ElRR fOfj89DcAgjYbqhw+X8d15WTkyfaARHQKlDDpAYzFmGkoLqVtPnDAp1SsOe9diif278f ZHMqHveexiG6wPrYn+fdYWoD7X2oZ/crdoVDkuOuWdOGPYzch4j1ZGBU3t7n7CUcmQHp osjmiY12xu7ahkyB+kXsBk6Xx9NMmZvJMsKSlYiFBirbcQ6if2uu0OnIZhxogaokSdzL AlDA== 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=R8MDTaGU//iqm0vbcxHeF2lK9GzB0/8f29KZfhaAPV4=; b=Kz6tqNj1dWrqQo5tCiAVK4txzRFoOUhmjuM9V+L3vZnCN0Cp3rLSczF5eu2ed+5RyU 7JQIHfmW2taBayl5AP/cquVuwN+K9aSFghWlLQdvu8IIy7s3fsYmVTK3wZrqx6v1ltoz JXiJ3L8fc8w6M8EWZsNHrCupFj7VItQawcVJqesR4c/5pOUSW7T7omgwyk4CGaXw1DiN 9TxwGEhFiu3VxA0TznF/UE6ePPCFuBoiOOzkQJYkJ4jJZ7LNOENpZ2JrAQ2InkI/+Cwc vGBkIiXvl4jqP0BFi4JEpiT8q6V1QKnTDWawaCGGypmKyAatb2lKiWy9HyevW/V3njSV pVrQ== X-Gm-Message-State: APzg51CTMSwWy9PR4u3c0qqmUbgtAfpy/Bua+3QPk5AJDieLhoYdTfK2 3TExfgQsYHqKnY49bVLlrNk= X-Google-Smtp-Source: ANB0Vdb9j+sGJa8UODcnCPWvaWOs+QgvrQoyqCcpBWkomjzd8ebEB9zhzXYTMyOCAgRqEn4l1Rm/vw== X-Received: by 2002:a17:902:209:: with SMTP id 9-v6mr2514348plc.270.1535478874188; Tue, 28 Aug 2018 10:54:34 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.250]) by smtp.gmail.com with ESMTPSA id v23-v6sm2664465pfm.80.2018.08.28.10.54.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 Aug 2018 10:54:33 -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 v2 1/3] ARM: dts: NSP: Enable SFP on bcm958625hr Date: Tue, 28 Aug 2018 10:54:18 -0700 Message-Id: <20180828175420.7992-2-f.fainelli@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180828175420.7992-1-f.fainelli@gmail.com> References: <20180828175420.7992-1-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..6fa0d8d1a218 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: 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 +228,14 @@ 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