Devicetree (for 2018.1 release)

pinctrl0: pinctrl {
        compatible = "xlnx,zynqmp-pinctrl";
        status = "disabled";
        pinctrl_uart1_default: uart1-default {
                mux {
                        groups = "uart1_0_grp";
                        function = "uart1";
                };
 
                conf {
                        groups = "uart1_0_grp";
                        slew-rate = <SLEW_RATE_SLOW>;
                        io-standard = <IO_STANDARD_LVCMOS18>;
                };
 
                conf-rx {
                        pins = "MIO1";
                        bias-high-impedance;
                };
 
                conf-tx {
                        pins = "MIO0";
                        bias-disable;
                };
        };
 
};