0x000b00b ->3<- -> 64MHz/4=16MHz */
#ifdef _CONFIG_UART1
+#define CONFIG_IMX_SERIAL
#define CONFIG_IMX_SERIAL1
#elif defined _CONFIG_UART2
+#define CONFIG_IMX_SERIAL
#define CONFIG_IMX_SERIAL2
#elif defined _CONFIG_UART3 | defined _CONFIG_UART4
-#define CONFIG_IMX_SERIAL_NONE
#define CONFIG_SYS_NS16550
#define CONFIG_SYS_NS16550_SERIAL
#define CONFIG_SYS_NS16550_CLK 3686400