Re: GPIO-driven RTS on TI hardware with 8250_omap driver

From	Ильяс Гасанов <torso.nafi@gmail.com>
Newsgroups	linux.kernel
Subject	Re: GPIO-driven RTS on TI hardware with 8250_omap driver
Date	2015-12-27 14:50 +0100
Message-ID	<qKjRU-7Gi-17@gated-at.bofh.it> (permalink)
References	<qJZJw-38X-5@gated-at.bofh.it> <qKiWd-73r-475@gated-at.bofh.it> <qKjoS-7uf-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Matwey,

2015-12-27 16:14 GMT+03:00 Matwey V. Kornilov <matwey@sai.msu.ru>:
> The half of what is described here are implemented in my patches.
> But I cannot understand the other half. Each of six AM335x UARTs has
> RTS/CTS pins which are controlled by pinmux in device tree, no magic
> required here.

The problem here is, the appliance schematics are already designed in
such way that pins which can be configured as "native" RTS are not
used for RS485 control - the ones that are though may only be used as
GPIO flipped by software on transmission start/end for that purpose.
We simply cannot change the schematics on production because of this
issue alone.

Regards,
Ilyas G.
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Thread

GPIO-driven RTS on TI hardware with 8250_omap driver Ильяс Гасанов   <torso.nafi@gmail.com> - 2015-12-26 17:20 +0100
  Re: GPIO-driven RTS on TI hardware with 8250_omap driver Andy Shevchenko <andy.shevchenko@gmail.com> - 2015-12-27 13:50 +0100
    Re: GPIO-driven RTS on TI hardware with 8250_omap driver "Matwey V. Kornilov" <matwey@sai.msu.ru> - 2015-12-27 14:20 +0100
      Re: GPIO-driven RTS on TI hardware with 8250_omap driver Ильяс Гасанов   <torso.nafi@gmail.com> - 2015-12-27 14:50 +0100

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