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=-12.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 128FAC4338F for ; Fri, 6 Aug 2021 09:41:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3F4261040 for ; Fri, 6 Aug 2021 09:41:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244631AbhHFJlw (ORCPT ); Fri, 6 Aug 2021 05:41:52 -0400 Received: from goliath.siemens.de ([192.35.17.28]:59925 "EHLO goliath.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242840AbhHFJlv (ORCPT ); Fri, 6 Aug 2021 05:41:51 -0400 Received: from mail2.sbs.de (mail2.sbs.de [192.129.41.66]) by goliath.siemens.de (8.15.2/8.15.2) with ESMTPS id 1769fSDa026920 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 Aug 2021 11:41:28 +0200 Received: from [167.87.32.106] ([167.87.32.106]) by mail2.sbs.de (8.15.2/8.15.2) with ESMTP id 1769fRiq032085; Fri, 6 Aug 2021 11:41:28 +0200 Subject: Re: wwan/iosm vs. xmm7360 To: "Kumar, M Chetan" Cc: Linux Kernel Mailing List , Linux Netdev List , linuxwwan@intel.com References: <0545a78f-63f0-f8dd-abdb-1887c65e1c79@siemens.com> From: Jan Kiszka Message-ID: Date: Fri, 6 Aug 2021 11:41:27 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06.08.21 11:29, Kumar, M Chetan wrote: > Hi Jan, > > What is the context of this request ? The context is that there are many folks out there (me included - Lenovo P52) with devices that have the xmm-7360 built-in, can't switch it to USB mode (prevented by OEM), and currently require [1]. That kind of works but is not really the final solution. So I also kicked off [2] there. > > FYI, the driver upstreamed is for M.2 7560. I know. I'm not an expert on the details, but reading the overall architectures of the IOSM and what has been reverse-engineered for the 7360, there seem to be some similarities. So, maybe you can explain to the community if that is a reasonable path to upstream 7360 support, or if at least the pattern of the 7560 could/should be transferred to the 7360 driver. Thanks, Jan [2] https://github.com/xmm7360/xmm7360-pci/issues/104 > > Regards, > Chetan > > On 8/6/2021 2:09 AM, Jan Kiszka wrote: >> Hi Chetan, >> >> at the risk of having missed this being answered already: >> >> How close is the older xmm7360 to the now supported xmm7560 in mainline? >> >> There is that reverse engineered PCI driver [1] with non-standard >> userland interface, and it would obviously be great to benefit from >> common infrastructure and specifically the modem-manager compatible >> interface. Is this realistic to achieve for the 7360, or is that >> hardware or its firmware too different? >> >> Thanks, >> Jan >> >> [1] https://github.com/xmm7360/xmm7360-pci >> -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux