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From: Sujeev Dias <sdias@codeaurora.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	Tony Truong <truong@codeaurora.org>
Subject: Re: [PATCH v1 1/4] mhi_bus: core: Add support for MHI host interface
Date: Thu, 3 May 2018 20:05:04 -0700
Message-ID: <d7c9fdd2-6078-503a-517a-f20dd6d8098f@codeaurora.org> (raw)
In-Reply-To: <20180503192110.bjd46afhe2ein3qm@devuan>

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

  reply index

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-27  2:23 MHI initial design review Sujeev Dias
2018-04-27  2:23 ` [PATCH v1 1/4] mhi_bus: core: Add support for MHI host interface Sujeev Dias
2018-04-27  7:22   ` Greg Kroah-Hartman
2018-04-28 14:28     ` Sujeev Dias
2018-04-28 15:50       ` Greg Kroah-Hartman
2018-04-27  7:23   ` Greg Kroah-Hartman
2018-04-27 12:18   ` Arnd Bergmann
2018-04-28 16:08     ` Sujeev Dias
2018-04-28  0:28   ` kbuild test robot
2018-04-28  2:52   ` kbuild test robot
2018-05-03 19:21   ` Pavel Machek
2018-05-04  3:05     ` Sujeev Dias [this message]
2018-06-22 23:03   ` Randy Dunlap
2018-04-27  2:23 ` [PATCH v1 2/4] mhi_bus: controller: MHI support for QCOM modems Sujeev Dias
2018-04-27 11:32   ` Arnd Bergmann
2018-04-28 15:40     ` Sujeev Dias
2018-04-28  3:05   ` kbuild test robot
2018-04-28  3:12   ` kbuild test robot
2018-04-27  2:23 ` [PATCH v1 3/4] mhi_bus: dev: netdev: add network interface driver Sujeev Dias
2018-04-27 11:19   ` Arnd Bergmann
2018-04-28 15:25     ` Sujeev Dias
2018-04-27  2:23 ` [PATCH v1 4/4] mhi_bus: dev: uci: add user space " Sujeev Dias
2018-04-27 11:36   ` Arnd Bergmann
2018-04-28  1:03   ` kbuild test robot
2018-04-28  5:16   ` [PATCH] mhi_bus: dev: uci: fix semicolon.cocci warnings kbuild test robot
2018-04-28  5:16   ` [PATCH v1 4/4] mhi_bus: dev: uci: add user space interface driver kbuild test robot
2018-07-09 20:08 ` MHI code review Sujeev Dias
2018-07-09 20:08   ` [PATCH v2 1/7] mhi_bus: core: initial checkin for modem host interface bus driver Sujeev Dias
2018-07-09 20:50     ` Greg Kroah-Hartman
2018-07-09 20:52     ` Greg Kroah-Hartman
2018-07-10  6:36     ` Greg Kroah-Hartman
2018-07-11 19:30     ` Rob Herring
2018-08-09 18:39     ` Randy Dunlap
2018-07-09 20:08   ` [PATCH v2 2/7] mhi_bus: core: add power management support Sujeev Dias
2018-07-09 20:08   ` [PATCH v2 3/7] mhi_bus: core: add support for data transfer Sujeev Dias
2018-07-10  6:29     ` Greg Kroah-Hartman
2018-07-09 20:08   ` [PATCH v2 4/7] mhi_bus: core: add support for handling ioctl cmds Sujeev Dias
2018-07-09 20:08   ` [PATCH v2 5/7] mhi_bus: core: add support to get external modem time Sujeev Dias
2018-07-11 19:32     ` Rob Herring
2018-08-09 20:17     ` Randy Dunlap
2018-07-09 20:08   ` [PATCH v2 6/7] mhi_bus: controller: MHI support for QCOM modems Sujeev Dias
2018-07-11 19:36     ` Rob Herring
2018-07-09 20:08   ` [PATCH v2 7/7] mhi_bus: dev: uci: add user space interface driver Sujeev Dias
2019-04-30 15:10   ` MHI code review Daniele Palmas
2019-06-12 17:54     ` Sujeev Dias
2019-06-12 20:58       ` Daniele Palmas
2019-06-12 18:00     ` Sujeev Dias

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