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Re: imx: RS-485 problems during TX, maybe DMA related

From Fabio Estevam <festevam@gmail.com>
Newsgroups linux.kernel
Subject Re: imx: RS-485 problems during TX, maybe DMA related
Date 2017-01-07 17:50 +0100
Message-ID <sX2lP-2PR-19@gated-at.bofh.it> (permalink)
References (2 earlier) <sWLEm-9g-35@gated-at.bofh.it> <sWNd7-1fD-1@gated-at.bofh.it> <sWZxE-13b-31@gated-at.bofh.it> <sX0Do-1H7-11@gated-at.bofh.it> <sX1g5-2aP-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sat, Jan 7, 2017 at 1:34 PM, Clemens Gruber
<clemens.gruber@pqgruber.com> wrote:
> Hi Fabio,
>
> On Sat, Jan 07, 2017 at 12:57:10PM -0200, Fabio Estevam wrote:
>> The MX6QDL_PAD_CSI0_DAT16__UART4_CTS_B option is only valid in dte mode.
>
> Ah, the input select is limited in that way, I see.
>
> You wrote that you tried rts-gpios.
> What about setting cts-gpios to gpio6 2 in the DT?
>
> Or can you remux RX and TX to be switched to work in dte mode?

I managed to get RS485 in half-duplex working with rts-gios. Will send
a patch shortly.

Thanks

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Thread

imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-04 17:20 +0100
  Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-06 22:30 +0100
    Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-07 00:00 +0100
      Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-07 01:40 +0100
        Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-07 14:50 +0100
          Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-07 16:00 +0100
            Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-07 16:40 +0100
              Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-07 17:50 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-07 22:00 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-07 22:50 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-08 00:10 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-08 03:40 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-08 19:10 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-08 22:50 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-01-11 01:40 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-11 13:00 +0100
                Re: imx: RS-485 problems during TX, maybe DMA related Fabio Estevam <festevam@gmail.com> - 2017-01-08 16:20 +0100

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