From: Arnd Bergmann <arnd@arndb.de>
To: Mark Brown <broonie@kernel.org>
Cc: Sagar Dharia <sdharia@codeaurora.org>,
gregkh@linuxfoundation.org, bp@suse.de, poeschel@lemonage.de,
treding@nvidia.com, gong.chen@linux.intel.com,
andreas.noever@gmail.com, alan@linux.intel.com,
mathieu.poirier@linaro.org, daniel@ffwll.ch, jkosina@suse.cz,
sharon.dvir1@mail.huji.ac.il, joe@perches.com,
davem@davemloft.net, james.hogan@imgtec.com,
michael.opdenacker@free-electrons.com,
daniel.thompson@linaro.org, robh+dt@kernel.org,
pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
kheitke@audience.com, mlocke@codeaurora.org,
agross@codeaurora.org, sheetal.tigadoli@gmail.com,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH V5 1/6] SLIMbus: Device management on SLIMbus
Date: Thu, 28 Apr 2016 18:49:23 +0200 [thread overview]
Message-ID: <2745420.JjpjMPLp2B@wuerfel> (raw)
In-Reply-To: <20160428163919.GP3217@sirena.org.uk>
On Thursday 28 April 2016 17:39:20 Mark Brown wrote:
> > 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.
>
That's of course fine: you essentially have a discoverable bus there,
and if we need something like that, we can always add it later to
any subsystem.
In contrast, the interface in the proposed slimbus subsystem seems
designed for board files, and is in the best case just dead code
that can be removed, or has a risk of being misused e.g. if some
device manufacturer decides to use a board file for this instead
of describing the slimbus slaves in DT.
Arnd
next prev parent reply other threads:[~2016-04-28 16:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 23:58 [PATCH V5 0/6] Introduce framework for SLIMbus device drivers Sagar Dharia
2016-04-27 23:58 ` [PATCH V5 1/6] SLIMbus: Device management on SLIMbus Sagar Dharia
2016-04-28 10:00 ` Arnd Bergmann
2016-04-28 11:53 ` Mark Brown
2016-04-28 12:33 ` Arnd Bergmann
2016-04-28 14:38 ` Mark Brown
[not found] ` <20160428143801.GO3217-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2016-04-28 14:59 ` Arnd Bergmann
2016-04-28 16:39 ` Mark Brown
2016-04-28 16:49 ` Arnd Bergmann [this message]
2016-04-29 11:17 ` Mark Brown
2016-05-06 17:35 ` Sagar Dharia
2016-06-03 9:14 ` Masami Hiramatsu
2016-04-27 23:58 ` [PATCH V5 2/6] of/slimbus: OF helper for SLIMbus Sagar Dharia
2016-04-28 9:54 ` Arnd Bergmann
2016-04-28 11:11 ` Mark Rutland
2016-05-03 16:11 ` Rob Herring
2016-05-03 19:26 ` Arnd Bergmann
2016-04-27 23:58 ` [PATCH V5 3/6] slimbus: Add messaging APIs to slimbus framework Sagar Dharia
2016-04-28 9:52 ` Arnd Bergmann
2016-04-27 23:58 ` [PATCH V5 4/6] slim: qcom: Add Qualcomm Slimbus controller driver Sagar Dharia
[not found] ` <1461801489-16254-5-git-send-email-sdharia-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2016-04-28 11:28 ` Mark Rutland
2016-05-06 17:28 ` Sagar Dharia
2016-04-27 23:58 ` [PATCH V5 5/6] slimbus: Add support for 'clock-pause' feature Sagar Dharia
2016-04-27 23:58 ` [PATCH V5 6/6] slim: qcom: Add runtime-pm support using clock-pause feature Sagar Dharia
2016-06-03 9:14 ` [PATCH V5 0/6] Introduce framework for SLIMbus device drivers Masami Hiramatsu
2016-06-27 1:30 ` Masami Hiramatsu
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