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=-1.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable 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 40FE7C04A6B for ; Mon, 6 May 2019 18:14:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BA2F20B7C for ; Mon, 6 May 2019 18:14:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=babayev.com header.i=@babayev.com header.b="TJRCGKtE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726976AbfEFSOS (ORCPT ); Mon, 6 May 2019 14:14:18 -0400 Received: from mail-io1-f67.google.com ([209.85.166.67]:46544 "EHLO mail-io1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726475AbfEFSOS (ORCPT ); Mon, 6 May 2019 14:14:18 -0400 Received: by mail-io1-f67.google.com with SMTP id m14so11910794ion.13 for ; Mon, 06 May 2019 11:14:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=babayev.com; s=google; h=references:user-agent:from:to:cc:subject:in-reply-to:date :message-id:mime-version; bh=bi1X8E2iJDbOTLkAMJo/IBi1WYDSDyokTPbiJ53Ivxs=; b=TJRCGKtEXJDmSGGyA07GXyq5cu9+tq3LBaNSRxUT0BZZDVFM4LmrCmly/KfJo84I5Z 3auKvn5kVMlG32tq7aHcagk45FMqrBYza/Oa9XxyvV7ozMKX8cASX53o8SHr2ccIUDmD pUk3zaZhy4m5wrR6xFY3/mEHVvkOvddzct5hk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version; bh=bi1X8E2iJDbOTLkAMJo/IBi1WYDSDyokTPbiJ53Ivxs=; b=lkRBZMNGthLn7fEQvfDF2lvUB/PX2YCRQX1Gf1qxUxanlj5I5WieybeNlkfmAj+wtl m1wzb75ZzgNw8BSSOaeyb3AgvrYQuoQTKOBTEINJnB4veqS36UsslIC6vh6XcCkRWDey pO5IqmIz7pXEt/prAbEjWDNukz7NjjVssrVcN1ZkMYVvgy9H7A1ZsSFPP61HQOsdHBQf 16z9f2siZTByOyX0sj/Nm0PeU1+MJGCZqA7R/olK9yyHKGC7xaiCZzdFyJrlG/v7+Phs wJNCm4+TQHNdOJaoLEF9IYDNUUf2yDp1GjQ/KMif4g1ktkc+/JgfrrWKutlUgbBy7tNf HyHw== X-Gm-Message-State: APjAAAX5p8IHYewcvspHvSu7V0tQThW05he1a6T+6TfOQ+x53Xydw0KD QDsHFefP/BUsfms5CqZRZmHP5w== X-Google-Smtp-Source: APXvYqxmH1MfnNyv9pTsAAZjt8KEU+PLQD878IbPuF3Kcy0xI+f0xrPj83IaLJSfaeDvvPIweCR+EQ== X-Received: by 2002:a6b:8ec4:: with SMTP id q187mr11218439iod.280.1557166457616; Mon, 06 May 2019 11:14:17 -0700 (PDT) Received: from localhost (50-46-216-15.evrt.wa.frontiernet.net. [50.46.216.15]) by smtp.gmail.com with ESMTPSA id d133sm5546120ita.5.2019.05.06.11.14.16 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 06 May 2019 11:14:16 -0700 (PDT) References: <20190505220524.37266-3-ruslan@babayev.com> <20190506045951.GB2895@lahna.fi.intel.com> User-agent: mu4e 1.0; emacs 26.1 From: Ruslan Babayev To: Mika Westerberg Cc: Ruslan Babayev , linux@armlinux.org.uk, andrew@lunn.ch, f.fainelli@gmail.com, hkallweit1@gmail.com, wsa@the-dreams.de, davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, xe-linux-external@cisco.com Subject: Re: [PATCH net-next 2/2] net: phy: sfp: enable i2c-bus detection on ACPI based systems In-reply-to: <20190506045951.GB2895@lahna.fi.intel.com> Date: Mon, 06 May 2019 11:14:15 -0700 Message-ID: <871s1bv4aw.fsf@babayev.com> MIME-Version: 1.0 Content-Type: text/plain Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Mika Westerberg writes: > On Sun, May 05, 2019 at 03:05:23PM -0700, Ruslan Babayev wrote: >> Lookup I2C adapter using the "i2c-bus" device property on ACPI based >> systems similar to how it's done with DT. >> >> An example DSD describing an SFP on an ACPI based system: >> >> Device (SFP0) >> { >> Name (_HID, "PRP0001") >> Name (_DSD, Package () >> { >> ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), >> Package () { >> Package () { "compatible", "sff,sfp" }, >> Package () { "i2c-bus", \_SB.PCI0.RP01.I2C.MUX.CH0 }, > > Hmm, ACPI has I2cSerialBusV2() resource for this purpose. Why you are not > using that? I am not an ACPI expert, but my understanding is I2cSerialBusV2() is used for slave connections. I am trying to reference an I2C controller here.