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Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero

From Michal Suchanek <hramrach@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero
Date 2015-08-20 21:50 +0200
Message-ID <pZE0y-6as-25@gated-at.bofh.it> (permalink)
References <pZz0R-7wx-11@gated-at.bofh.it> <pZzkh-7Tp-89@gated-at.bofh.it> <pZzkh-7Tp-87@gated-at.bofh.it>
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On 20 August 2015 at 16:48, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> On Thu, Aug 20, 2015 at 02:19:46PM -0000, Michal Suchanek wrote:
>> When the maximum transfer speed is not set for a SPI slave the value
>> remains 0 and the code in sunxi SPI divides by it. Use an arbitrary
>> speed instead in that case.
>>
>> Signed-off-by: Michal Suchanek <hramrach@gmail.com>
>
> spi->max_speed_hz is set using the spi-max-frequency property, and
> spi->will error out if that property isn't set. What am I missing?
>

Spidev I guess.

You can set the speed to arbitrary value from userspace at any time
using the spidev ioctls.

Thanks

Michal
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Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-08-20 16:50 +0200
  Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero Michal Suchanek <hramrach@gmail.com> - 2015-08-20 21:50 +0200
    Re: [PATCH 3/9] spi: sunxi: check that transfer speed is non-zero Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-08-20 23:30 +0200

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