linux-kernel - Re: [PATCH V5 1/6] SLIMbus: Device management on SLIMbus

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Message-ID: <20160428163919.GP3217@sirena.org.uk>
Date:	Thu, 28 Apr 2016 17:39:20 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Sagar Dharia <sdharia@...eaurora.org>, gregkh@...uxfoundation.org,
	bp@...e.de, poeschel@...onage.de, treding@...dia.com,
	gong.chen@...ux.intel.com, andreas.noever@...il.com,
	alan@...ux.intel.com, mathieu.poirier@...aro.org, daniel@...ll.ch,
	jkosina@...e.cz, sharon.dvir1@...l.huji.ac.il, joe@...ches.com,
	davem@...emloft.net, james.hogan@...tec.com,
	michael.opdenacker@...e-electrons.com, daniel.thompson@...aro.org,
	robh+dt@...nel.org, pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	kheitke@...ience.com, mlocke@...eaurora.org, agross@...eaurora.org,
	sheetal.tigadoli@...il.com, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH V5 1/6] SLIMbus: Device management on SLIMbus

On Thu, Apr 28, 2016 at 04:59:02PM +0200, Arnd Bergmann wrote:

> My comment this time was for the particular driver, but I'd
> still also maintain that a new subsystem in general should not
> start out by addressing the needs of traditional board files.

I certainly wouldn't insist that people add it but equally pushing to
remove it too strongly seems like the wrong thing, at least as a general
comment rather than a specific one.

> I don't think we have merge new platform support on any
> architecture that would need this in the past years and
> stuff like spi_board_info and i2c_board_info is only really
> used on really old machines (but not going away any time soon
> either).

It's not just platforms that use these things though - there's things
like the SolarFlare NICs where the firmware update mechanism essentially
involves exposing a SPI flash as part of a PCI device and we just merged
an ASoC driver for a video card which was reusing some existing IPs and
chips.

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