--- zzzz-none-000/linux-2.6.39.4/arch/x86/include/asm/serial.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/arch/x86/include/asm/serial.h	2021-11-10 13:38:14.000000000 +0000
@@ -1,3 +1,10 @@
+/******************************************************************
+ 
+ Includes Intel Corporation's changes/modifications dated: 07/2011.
+ Changed/modified portions - Copyright(c) 2011, Intel Corporation. 
+
+******************************************************************/
+
 #ifndef _ASM_X86_SERIAL_H
 #define _ASM_X86_SERIAL_H
 
@@ -8,7 +15,17 @@
  * clock, since the 16550A is capable of handling a top speed of 1.5
  * megabits/second; but this requires the faster clock.
  */
+/*
+ * The following code is for Intel Media SOC Gen3 base support.
+*/
+#ifdef CONFIG_GEN3_UART
+/*
+ * The Intel Media SOC Gen3 has a high freqency clock.
+*/
+#define BASE_BAUD ( 14745600 / 16 )
+#else
 #define BASE_BAUD ( 1843200 / 16 )
+#endif
 
 /* Standard COM flags (except for COM4, because of the 8514 problem) */
 #ifdef CONFIG_SERIAL_DETECT_IRQ
@@ -19,11 +36,33 @@
 #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
 #endif
 
+/*
+ * The following code is for Intel Media SOC Gen3 base support.
+*/
+#ifdef CONFIG_GEN3_UART
+/*
+ * Definition of the serial port for Intel Media SOC Gen3.
+*/
+#ifdef CONFIG_SMP
+#define SERIAL_PORT_DFNS			\
+	/* UART CLK   PORT IRQ     FLAGS        */			\
+	{ 0, BASE_BAUD, 0x3F8, 38, STD_COM_FLAGS },	/* ttyS0 */	\
+	{ 0, BASE_BAUD, 0x2F8, 38, STD_COM_FLAGS },	/* ttyS1 */	\
+	{ 0, BASE_BAUD, 0x3E8, 38, STD_COM_FLAGS },	/* ttyS2 */
+#else
+#define SERIAL_PORT_DFNS			\
+	/* UART CLK   PORT IRQ     FLAGS        */			\
+	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\
+	{ 0, BASE_BAUD, 0x2F8, 4, STD_COM_FLAGS },	/* ttyS1 */	\
+	{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */
+#endif
+#else
 #define SERIAL_PORT_DFNS			\
 	/* UART CLK   PORT IRQ     FLAGS        */			\
 	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\
 	{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },	/* ttyS1 */	\
 	{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */	\
 	{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },	/* ttyS3 */
+#endif
 
 #endif /* _ASM_X86_SERIAL_H */