On Thu, Jun 28, 2018 at 10:25:32AM +0300, Baruch Siach wrote: > The i.MX UART peripheral uses the RST_B signal as input, and CTS_B as s/RST_B/RTS_B/ > output. This is just like the DCE role in RS-232. This is true > regardless of the "DTE mode" setting of this peripheral. > > As a result, rs485 support hardware must use the CTS_B signal to control > the RS-485 transceiver. This is in contrast to generic rs485 kernel > code, documentation, and DT property names that consistently refer to > the RTS as transceiver control signal. > > Add a note in the DT binding document about that, to reduce the > confusion somewhat. > > Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx> > --- > v2: Fix commit log typos (Lothar Waßmann) > --- > Documentation/devicetree/bindings/serial/fsl-imx-uart.txt | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) With that, Reviewed-by: Rob Herring <robh@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
