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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23D6EC19F2C for ; Thu, 4 Aug 2022 07:07:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239088AbiHDHHm (ORCPT ); Thu, 4 Aug 2022 03:07:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239078AbiHDHHk (ORCPT ); Thu, 4 Aug 2022 03:07:40 -0400 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DA0661B3E; Thu, 4 Aug 2022 00:07:38 -0700 (PDT) Received: by mail-ej1-x633.google.com with SMTP id dc19so12515274ejb.12; Thu, 04 Aug 2022 00:07:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=6tNYjvdH86S2UFNUtFTO0Ym4RZvNgdxqohXRh3u17y0=; b=iISBakQM+KhpORSAdwWKu6+Oq3YQYY+hKhzjxD+MjvvIeZVHWb5j3C9ax/7Y4lagKL H7qStbRFh2yhGRMe1E8pf8GEkzmcS53fIg3/pUrd1fkoR8lyuZYot6uV2Yb/jK0TUYoz zY0J2ZjiwHZl0oaRdlA2cFV7mId9QLrKkU5CjrEiLW0zbFFdczgxmeIl8XsenBqly0mT CvyZHGcWJS9vw32k/7uEmKdb3esAjwBoe7NUmpj1SYqjgKXkRrrRBj+ayYT1h7YFB66u VI1pEi9W0tx80CiNSBbc1H78nvAShAGJLIDyF68+ipFfwi9L98BAAeoOhDS3OC9DebZ2 S85w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=6tNYjvdH86S2UFNUtFTO0Ym4RZvNgdxqohXRh3u17y0=; b=oHrBGiYEDwvDhODtNxfDSAIMU5hzooK0zCf9zzVnH6NfyufzY4k+rBM7w1lIG1B5oZ xBHyfaFINDjyGbQwSS75bcmOYXncX4S8Nc7Z7hJS0AoWaEPD3G3i6Gf8dTnDgZw5WqcK RKDxFMNLpCgQYLms1YR9e5wSsxD6wj3u83ZLkDZ/U+Qk4gtpNADcQuNenGtghdIkLlil c9g/XDZBREuTr6SXXb8PC90pHGvqMgZVmmHpS+AP2yVBgm7S5eBMpOeudGQEXelIN1W1 ARFPZ57Ovkw6oT/ezZKYDHG9hv8OuJSwlMhyNfejxRSxyWg61n1MzkPZOd+QUDoY8wc5 iKSg== X-Gm-Message-State: ACgBeo1gZyfOD5gZvW7b7YiMA8Bw1RQEOb4EzIvmdvwstuPrShMv8jZV 28qr1LM3Z2o5+Zve5WtHrcyEjULlsBXlVjyC+rKoruR0AE0= X-Google-Smtp-Source: AA6agR7YMNcfmKToFJf89LOx3azGb6RKBSee7DlUdqWqPn6KEUH7do4CfBR02eYBaYxueKug3aCy/tWr+ksjMZNKZkM= X-Received: by 2002:a17:907:75d5:b0:730:b051:d93f with SMTP id jl21-20020a17090775d500b00730b051d93fmr376508ejc.568.1659596857030; Thu, 04 Aug 2022 00:07:37 -0700 (PDT) MIME-Version: 1.0 References: <20220803090218.1313187-1-kkamagui@gmail.com> In-Reply-To: From: Daniele Palmas Date: Thu, 4 Aug 2022 09:08:24 +0200 Message-ID: Subject: Re: [PATCH] net: usb: cdc_mbim: adding Microsoft mobile broadband modem To: Seunghun Han Cc: Oliver Neukum , David Miller , linux-usb , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Seunghun, Il giorno mer 3 ago 2022 alle ore 14:56 Seunghun Han ha scritto: > > Hello Daniele, > > On Wed, Aug 3, 2022 at 7:58 PM Daniele Palmas wrote: > > > > Just for reference, are you allowed to disclose which chipsets these > > modems are based on? > > > > Thanks, > > Daniele > > I'm not sure which chipsets are used for them. In the Windows > environment, the information that I could find was Microsoft Surface > Mobile Broadband Modem. Some people guess they are based on Qualcomm > Snapdragon X16 and successors, but I could find no evidence about > them. > > If you know the way, would you tell me how I can find or confirm it? > Unfortunately I'm not aware of any specific place for that: I wrongly thought that you were involved in the development of the modem and you knew the chipset. However, sometimes the name of the chipset is left in the firmware revision: you can try looking if there's any hint in the output of the device caps request. If it's a Qualcomm modem it should probably also support QMI-over-MBIM service, so maybe you can also try a few DMS requests (--dms-get-software-version, --dms-get-revision...). Sometimes also the USB descriptors can be useful. Regards, Daniele > Best regards, > Seunghun