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Date:   Wed, 1 Jul 2020 10:50:49 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Jason Gunthorpe <jgg@...pe.ca>
Cc:     Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Takashi Iwai <tiwai@...e.de>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, nhorman@...hat.com,
        sassmann@...hat.com, Fred Oh <fred.oh@...ux.intel.com>,
        lee.jones@...aro.org
Subject: Re: [net-next v4 10/12] ASoC: SOF: Introduce descriptors for SOF
 client

On Tue, Jun 30, 2020 at 02:27:10PM -0300, Jason Gunthorpe wrote:

> I wonder if SW_MFD might me more apt though? Based on Mark's remarks
> current MFD is 'hw' MFD where the created platform_devices expect a
> MMIO pass through, while this is a MFD a device-specific SW
> interfacing layer.

Another part of this is that there's not a clean cut over between MMIO
and not using any hardware resources at all - for example a device might
be connected over I2C but use resources to distribute interrupts to
subdevices.

> MFD really is the best name for this kind of functionality,
> understanding how it is different from the current MFD might also help
> justify why it exists and give it a name.

Right, it's not clear what we're doing here.

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