From: Mark Brown <broonie@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Vinod Koul <vinod.koul@intel.com>,
Viresh Kumar <vireshk@kernel.org>,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
Rob Herring <robh+dt@kernel.org>,
Hans-Christian Egtvedt <egtvedt@samfundet.no>,
Tejun Heo <tj@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Mark Rutland <mark.rutland@arm.com>,
Vineet Gupta <vgupta@synopsys.com>
Subject: Re: [PATCH v3 08/15] dmaengine: dw: revisit data_width property
Date: Wed, 13 Apr 2016 17:40:35 +0100 [thread overview]
Message-ID: <20160413164035.GA29471@sirena.org.uk> (raw)
In-Reply-To: <1460564513.6620.170.camel@linux.intel.com>
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On Wed, Apr 13, 2016 at 07:21:53PM +0300, Andy Shevchenko wrote:
> On Wed, 2016-04-13 at 21:47 +0530, Vinod Koul wrote:
> > On Wed, Apr 13, 2016 at 07:05:48PM +0300, Andy Shevchenko wrote:
> > > The old is still supported and benefit is apparently in unifying
> > > standard properties across the drivers.
> > Hrmmm how is that?
> The common usage for data-width property is "in bytes". And I like the
> idea. I don't know why at all I chose to keep encoded value there in the
> first place and no one commented at that time. I suppose because of
> screwed device tree process. I think now it's better to follow some
> standard / registered properties in new drivers.
You're unfortunately still breaking compatibility with existing DTs
using this property. Now, it does appear that there is very little use
of this DMA controller on DT systems and judging by the somewhat odd
compatible string and in tree DTs most of those are legacy so perhaps
this isn't the end of the world but this isn't something that should be
dismissed as a simple cleanup.
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next prev parent reply other threads:[~2016-04-13 16:40 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-18 14:24 [PATCH v3 00/15] Fixes / cleanups in dw_dmac (affects on few subsystems) Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 01/15] dmaengine: dw: fix master selection Andy Shevchenko
2016-04-04 17:03 ` Vinod Koul
2016-04-04 17:10 ` Andy Shevchenko
2016-04-06 18:56 ` Vinod Koul
2016-04-06 19:56 ` Andy Shevchenko
2016-04-06 21:09 ` Koul, Vinod
2016-04-07 13:03 ` Andy Shevchenko
2016-04-13 13:36 ` Andy Shevchenko
2016-04-08 13:22 ` [PATCH v3.5 1/1] " Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 02/15] dmaengine: dw: rename masters to reflect actual topology Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 03/15] dmaengine: dw: set src and dst master select according to xfer direction Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 04/15] dmaengine: dw: fix byte order of hw descriptor fields Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 05/15] dmaengine: dw: set LMS field in descriptors Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 06/15] dmaengine: dw: clear LLP_[SD]_EN bits in last descriptor of a chain Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 07/15] dmaengine: dw: substitute dma_read_byaddr by dma_readl_native Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 08/15] dmaengine: dw: revisit data_width property Andy Shevchenko
2016-04-13 15:57 ` Vinod Koul
2016-04-13 16:05 ` Andy Shevchenko
2016-04-13 16:17 ` Vinod Koul
2016-04-13 16:21 ` Andy Shevchenko
2016-04-13 16:40 ` Mark Brown [this message]
2016-04-15 12:45 ` Andy Shevchenko
2016-04-16 5:45 ` Vinod Koul
2016-03-18 14:24 ` [PATCH v3 09/15] dmaengine: dw: define counter variables as unsigned int Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 10/15] dmaengine: dw: keep entire platform data in struct dw_dma Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 11/15] dmaengine: dw: pass platform data via struct dw_dma_chip Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 12/15] dmaengine: dw: move dwc->paused to dwc->flags Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 13/15] dmaengine: dw: move dwc->initialized " Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 14/15] dmaengine: dw: move residue to a descriptor Andy Shevchenko
2016-03-18 14:24 ` [PATCH v3 15/15] dmaengine: dw: set cdesc to NULL when free cyclic transfers Andy Shevchenko
2016-04-13 16:08 ` [PATCH v3 00/15] Fixes / cleanups in dw_dmac (affects on few subsystems) Vinod Koul
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