netdev - Re: [PATCH net-next v3 1/1] net: wwan: t7xx: Add AP CLDMA

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Message-ID: <06e9db15-f5a2-c4ca-8750-c1909fdaf0a9@linux.intel.com>
Date:   Wed, 13 Jul 2022 13:53:33 -0700
From:   "moises.veleta" <moises.veleta@...ux.intel.com>
To:     Sergey Ryazanov <ryazanov.s.a@...il.com>
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        Johannes Berg <johannes@...solutions.net>,
        Loic Poulain <loic.poulain@...aro.org>,
        M Chetan Kumar <m.chetan.kumar@...el.com>,
        "Devegowda, Chandrashekar" <chandrashekar.devegowda@...el.com>,
        Intel Corporation <linuxwwan@...el.com>,
        chiranjeevi.rapolu@...ux.intel.com,
        Haijun Liu (刘海军) 
        <haijun.liu@...iatek.com>,
        Ricardo Martinez <ricardo.martinez@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "Sharma, Dinesh" <dinesh.sharma@...el.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        ram.mohan.reddy.boggala@...el.com,
        "Veleta, Moises" <moises.veleta@...el.com>,
        Madhusmita Sahu <madhusmita.sahu@...el.com>
Subject: Re: [PATCH net-next v3 1/1] net: wwan: t7xx: Add AP CLDMA

Hi Sergey

On 7/13/22 13:39, Sergey Ryazanov wrote:
> Hello Moises,
>
> On Wed, Jul 13, 2022 at 8:07 PM Moises Veleta
> <moises.veleta@...ux.intel.com> wrote:
>> From: Haijun Liu <haijun.liu@...iatek.com>
>>
>> The t7xx device contains two Cross Layer DMA (CLDMA) interfaces to
>> communicate with AP and Modem processors respectively. So far only
>> MD-CLDMA was being used, this patch enables AP-CLDMA.
> What is the purpose of adding the driver interface to the hardware
> function without a user counterpart?
>
We have follow-on features/submissiona that are dependent on this AP 
control port: PCIe rescan,  FW flashing via devlink, & Coredump log 
collection. They will be submitted for review upon completion by 
different individuals. This foreruns their efforts.