From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AB8JxZqYEtgx07ZYn2rVaVGaSxTdEjpPPIzdwBQ6infGUON1m8J/eHq5KiR5QkqleChKcf9ypAb8 ARC-Seal: i=1; a=rsa-sha256; t=1525403107; cv=none; d=google.com; s=arc-20160816; b=fuNGdyJHPZFKfGyO6fYjBylDqFwZiMlJGObO4aet7a99Lwli2gx8DUnHPul7V/H7aH VyuzoG0VRoTxZuynoMkHLAu3kAi6cF1DbC3BJfC7W8u4PxFE5t24hDLcXYf7xqKV+KnG x8MCuikeVKwurmPDOd+4PDhn5eV/DpoIjW3O8Q6BTJ8kDB32lQHorNPk0t4lxrh/Rw11 t2MMAfWa4qHkyHNixpBKOsf8tEFcZWvmzbQ8hR3gYP7mx+kfngQ+Rd8w+buQJ3WNE7zS 79+eckoZh7Zn0GrmAiyNTfhhuxaRfQszC/zo8GHzPXvmdHhrWpM6zw4Y7zgLgp3bEk0Z KnFA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-language:content-transfer-encoding:in-reply-to:mime-version :user-agent:date:message-id:from:references:cc:to:subject :dmarc-filter:dkim-signature:dkim-signature :arc-authentication-results; bh=ajB3X5WyhdyzymMtootBRVBZEQXmyq/hoQ6v4Vcc00E=; b=So7JuzOA64wCNmfJ+jE7UjH5UYuUsxoktxFW2HIG08phN+821gsOpo/JHuYD3VUzpp o7f+3D6KUGQjQwFjVWBftOq0D+vW4oHlYj9LJ2eogENoOVtRKfYQ+DDqWKv6ou0M9J68 AAJD8rXsGXoIaVkp95Z9t4TDSpwT747ErSLy4XQcNCfFzSIMlOSSpjU6vwHWMXB5ftDp PixLAQlSDZpiqIlCpBiVr7xecuwoiBGv2gi7+SftM30zBlUNOzsGust0yoE5UfTejRK4 uiyuCAZc5NEB+QoelOHP1xd8gcHBPuevc01IgaEBhqE5uJMbQtFXR7LHACIud5BgM5ZO ufiQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=Q7w2T4/M; dkim=pass header.i=@codeaurora.org header.s=default header.b=Q7w2T4/M; spf=pass (google.com: domain of sdias@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=sdias@codeaurora.org Authentication-Results: mx.google.com; dkim=pass header.i=@codeaurora.org header.s=default header.b=Q7w2T4/M; dkim=pass header.i=@codeaurora.org header.s=default header.b=Q7w2T4/M; spf=pass (google.com: domain of sdias@codeaurora.org designates 198.145.29.96 as permitted sender) smtp.mailfrom=sdias@codeaurora.org DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org ECBE36028D Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sdias@codeaurora.org Subject: Re: [PATCH v1 1/4] mhi_bus: core: Add support for MHI host interface To: Pavel Machek Cc: Greg Kroah-Hartman , Arnd Bergmann , linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Tony Truong References: <1524795811-21399-1-git-send-email-sdias@codeaurora.org> <1524795811-21399-2-git-send-email-sdias@codeaurora.org> <20180503192110.bjd46afhe2ein3qm@devuan> From: Sujeev Dias Message-ID: Date: Thu, 3 May 2018 20:05:04 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <20180503192110.bjd46afhe2ein3qm@devuan> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598864306474861315?= X-GMAIL-MSGID: =?utf-8?q?1599501088778996966?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Hi Pavel On 05/03/2018 12:21 PM, Pavel Machek wrote: > Hi! > >> MHI Host Interface is a communication protocol to be used by the host >> to control and communcate with modem over a high speed peripheral bus. >> This module will allow host to communicate with external devices that >> support MHI protocol. > I have Motorola Droid 4 cellphone here, with Qualcomm GSM modem. But > it talks over serial line and USB. I guess MHI is not applicable to my > hardware? > MHI is for PCIe based modem, in any case I can't comment about commercial devices. >> +MHI Devices >> +----------- >> +Logical device that bind to maximum of two physical MHI channels. Once MHI is in >> +powered on state, each supported channel by controller will be allocated as a >> +mhi_device. > What kind of protocol is running over MHI? I guess its not AT > commands. QMI? Or something entirely different? All modem services between external modem and host go over MHI. So QMI, AT, all other data and control services go thru MHI host driver. > Pavel Thanks Sujeev -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project