Hello. > The following devices/functionalities were added: > * Main and secondary UARTs. > * i2c and the pcf8563 device. > * Ethernet. > * NAND. > * The BP1 button. > * The LED. > * Watchdog. > * SD. > * USB host. ... > + reg_3p3v: regulator@0 { > + reg = <0>; > + compatible = "regulator-fixed"; > + regulator-name = "3P3V"; > + regulator-min-microvolt = <3300000>; > + regulator-max-microvolt = <3300000>; > + regulator-always-on; "regulator-always-on" make no sense for virtual supplies. ... > + pinctrl_uart1: uart1grp { > + fsl,pins = <MX53_UART1_PINGRP2>; > + }; > + > + pinctrl_uart2: uart2grp { > + fsl,pins = <MX53_UART2_PINGRP2>; > + }; > + }; > +}; > + > +&uart1 { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_uart1>; > + fsl,uart-has-rtscts; So if you use "fsl,uart-has-rtscts", should you add MX53_UART1_PINGRP3 into pinctls too? --- ��.n��������+%������w��{.n����z�{��ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f