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Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs

From Marek Vasut <marex@denx.de>
Newsgroups linux.kernel
Subject Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs
Date 2016-11-09 19:20 +0100
Message-ID <sBFDA-2qo-27@gated-at.bofh.it> (permalink)
References (2 earlier) <sAWQ9-6UY-29@gated-at.bofh.it> <sAXjd-74X-49@gated-at.bofh.it> <sBd4C-lV-17@gated-at.bofh.it> <sBi4i-3IU-9@gated-at.bofh.it> <sBixk-3SR-47@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 11/08/2016 06:30 PM, Joel Holdsworth wrote:
>>>> On the whole, I don't think the zero-length transfers are too
>>>> egregiously bad, and all the alternatives seem worse to me.
>>>
>>> So why not turn the CS line into GPIO and just toggle the GPIO?
>>
>> Does that work with *all* SPI controllers?
>>
> 
> It does not - no. See my other email.

And is that line an actual CS of that lattice chip or a generic input
which almost works like CS?

-- 
Best regards,
Marek Vasut

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Thread

[PATCH v8 1/3] of: Add vendor prefix for Lattice Semiconductor Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-07 04:00 +0100
  [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-07 04:00 +0100
    Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Moritz Fischer <moritz.fischer@ettus.com> - 2016-11-07 19:30 +0100
      Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-07 20:10 +0100
        Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Moritz Fischer <moritz.fischer@ettus.com> - 2016-11-07 22:50 +0100
    Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Marek Vasut <marex@denx.de> - 2016-11-07 19:30 +0100
      Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-07 20:00 +0100
        Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Marek Vasut <marex@denx.de> - 2016-11-08 12:50 +0100
          Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Moritz Fischer <moritz.fischer@ettus.com> - 2016-11-08 18:10 +0100
            Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-08 18:40 +0100
              Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Marek Vasut <marex@denx.de> - 2016-11-09 19:20 +0100
                Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-09 19:40 +0100
                Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Marek Vasut <marex@denx.de> - 2016-11-09 19:50 +0100
                Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-09 20:00 +0100
                Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Marek Vasut <marex@denx.de> - 2016-11-10 18:00 +0100
          Re: [PATCH v8 3/3] fpga: Add support for Lattice iCE40 FPGAs Joel Holdsworth <joel@airwebreathe.org.uk> - 2016-11-08 18:20 +0100

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