linux-kernel - Re: [PATCH 1/2] dt-bindings: spi: Add Spreadtrum SPI controller documentation

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Date:   Wed, 8 Aug 2018 18:57:01 +0000
From:   Trent Piepho <tpiepho@...inj.com>
To:     "broonie@...nel.org" <broonie@...nel.org>,
        "baolin.wang@...aro.org" <baolin.wang@...aro.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "orsonzhai@...il.com" <orsonzhai@...il.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "zhang.lyra@...il.com" <zhang.lyra@...il.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "lanqing.liu@...eadtrum.com" <lanqing.liu@...eadtrum.com>
Subject: Re: [PATCH 1/2] dt-bindings: spi: Add Spreadtrum SPI controller
 documentation

On Wed, 2018-08-08 at 11:54 +0100, Mark Brown wrote:
> On Wed, Aug 08, 2018 at 06:35:28PM +0800, Baolin Wang wrote:
> > On 8 August 2018 at 17:50, Mark Brown <broonie@...nel.org> wrote:
> > > Right, I don't think we added this yet (if we did I can't see
> > > it).  I'd
> > > add a new field to spi_transfer for this, then other controllers
> > > with
> > > the same support can implement it as well and drivers can start
> > > using
> > > it too.
> > OK. So I will name the new filed as 'word_delay', is it OK for you?
> 
> Sounds good, yes.

Should it be in µs like the existing iter-transfer delay?  I think
perhaps units of cycles of the SPI clock make more sense?