linux-kernel - Re: [PATCH v6] spi: Add SPI driver for Mikrotik RB4xx series boards

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Message-ID: <20150410154505.GM6023@sirena.org.uk>
Date:	Fri, 10 Apr 2015 16:45:05 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Bert Vermeulen <bert@...t.com>
Cc:	ralf@...ux-mips.org, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
	andy.shevchenko@...il.com, jogo@...nwrt.org
Subject: Re: [PATCH v6] spi: Add SPI driver for Mikrotik RB4xx series boards

On Fri, Apr 10, 2015 at 05:31:15PM +0200, Bert Vermeulen wrote:
> On 04/09/2015 11:50 PM, Mark Brown wrote:
> > On Thu, Apr 09, 2015 at 11:31:12PM +0200, Bert Vermeulen wrote:

> > implementation of that standard API to the core.  It *sounds* like
> > you're just trying to implement two wire mode which does have a standard
> > API, please use that.

> Can you please advise what kind of solution would be acceptable then? I need
> to signal from an SPI protocol driver to an SPI master on a per-transfer basis.

Please refer to my reply above...

> Also, I have no idea what you mean by two-wire mode. This "fast mode" is SPI
> + one extra pin.

SPI_TX_DUAL.

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