--- zzzz-none-000/linux-2.6.39.4/include/linux/serial_core.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/include/linux/serial_core.h	2021-11-10 13:23:10.000000000 +0000
@@ -45,7 +45,8 @@
 #define PORT_OCTEON	17	/* Cavium OCTEON internal UART */
 #define PORT_AR7	18	/* Texas Instruments AR7 internal UART */
 #define PORT_U6_16550A	19	/* ST-Ericsson U6xxx internal UART */
-#define PORT_MAX_8250	19	/* max port ID */
+#define PORT_TI_16550A  20
+#define PORT_MAX_8250	20	/* max port ID */
 
 /*
  * ARM specific type numbers.  These are not currently guaranteed
@@ -369,6 +370,8 @@
 	unsigned char		irq_wake;
 	unsigned char		unused[2];
 	void			*private_data;		/* generic platform data pointer */
+    unsigned int     histogram_RX_stats [16];   /*histogram of number of bytes read from the fifo at interrupt */
+
 };
 
 /*