UART3(/dev/ttymxc2) :베이스 보드 J5 커넥터 44(EIM_D24 할당 TX), 46(EIM_D25 할당 RX) 핀

UART4 (/dev/ttymxc3):베이스 보드 J5 커넥터 31(KEY_ROW0 할당 RX), 39 (KEY_COL0 할당 TX) 핀

                pinctrl_uart3: uart3grp {

                        fsl,pins = <

                                MX6QDL_PAD_EIM_D24__UART3_TX_DATA       0x1b0b1

                                MX6QDL_PAD_EIM_D25__UART3_RX_DATA       0x1b0b1

                        >;

                };

pinctrl_uart4: uart4grp {

                        fsl,pins = <

                                MX6QDL_PAD_KEY_COL0__UART4_TX_DATA      0x1b0b1

                                MX6QDL_PAD_KEY_ROW0__UART4_RX_DATA      0x1b0b1

                        >;

                };

&uart3 {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_uart3>;

        status = "okay";

};

&uart4 {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_uart4>;

        status = "okay";

};