On Tue, Apr 12, 2016 at 02:17:59PM +0200, Petr Štetiar wrote: > Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> [2016-04-12 12:58:56]: > > > ok, so UFCR_DCEDTE is set and UCR3_DSR controls the DTR output as > > intended. What is connected to the respective pin? > > MX6QDL_PAD_EIM_D25__UART1_DSR_B I think is the one. > > It's routed out to Apalis SoM pin 120, which is then connected via 22R > resistor and through SN65C3243DBR RS-232 line driver to header which I use as > debug/serial console. Then I guess the problem is that the rs232-partner asserts the imx6's DSR in reply to the imx6 asserting DTR? Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- 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