Re: [PATCH 1/5] spi: do not fail if the CS line is not connected

From	Mark Brown <broonie@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/5] spi: do not fail if the CS line is not connected
Date	2016-06-26 14:50 +0200
Message-ID	<rOhFD-2ZF-15@gated-at.bofh.it> (permalink)
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On Sun, Jun 19, 2016 at 03:09:02PM +0900, Andi Shyti wrote:

> > > This is true, but there are cases where the CS is not connected
> > > and this case needs to be treated separately to allow the device
> > > to work.

> > In what way?  It is just as easy for a device with no physical chip
> > select to have a logical chip select of 0 that it does nothing with as
> > it is for that device to handle any other number.

> That is indeed my case: the s3c64xx doesn't send anything, unless
> I manually enable CS (from the next patches I need to write '0'
> in the CS register). But I need smoething to tell to the
> device that the CS line is not connected, for example a flag in
> the DTS.

I'm sorry but I just don't understand what you're saying here.  You are
saying that there is no chip select but you need to enable the chip
select?

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Re: [PATCH 1/5] spi: do not fail if the CS line is not connected Mark Brown <broonie@kernel.org> - 2016-06-26 14:50 +0200
  Re: [PATCH 1/5] spi: do not fail if the CS line is not connected Andi Shyti <andi.shyti@samsung.com> - 2016-06-27 13:00 +0200
    Re: [PATCH 1/5] spi: do not fail if the CS line is not connected Mark Brown <broonie@kernel.org> - 2016-06-27 15:10 +0200
      Re: [PATCH 1/5] spi: do not fail if the CS line is not connected Andi Shyti <andi@etezian.org> - 2016-06-27 16:10 +0200

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