diff --git a/arch/ppc/platforms/4xx/ibm440sp.h b/arch/ppc/platforms/4xx/ibm440sp.h
--- a/arch/ppc/platforms/4xx/ibm440sp.h
+++ b/arch/ppc/platforms/4xx/ibm440sp.h
@@ -27,7 +27,7 @@
 #define PPC440SP_UART2_ADDR	0x00000001f0000600ULL
 #define UART0_INT		0
 #define UART1_INT		1
-#define UART2_INT		2
+#define UART2_INT		37
 
 /* Clock and Power Management */
 #define IBM_CPM_IIC0		0x80000000	/* IIC interface */
diff --git a/arch/ppc/platforms/4xx/luan.c b/arch/ppc/platforms/4xx/luan.c
--- a/arch/ppc/platforms/4xx/luan.c
+++ b/arch/ppc/platforms/4xx/luan.c
@@ -296,9 +296,12 @@ luan_early_serial_map(void)
 		printk("Early serial init of port 1 failed\n");
 	}
 
+	/* Enable UART2 */
+	SDR_WRITE(DCRN_SDR_PFC1, SDR_READ(DCRN_SDR_PFC1) | 0x01000000);
+	
 	port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
 	port.irq = UART2_INT;
-	port.uartclk = BASE_BAUD;
+	port.uartclk = clocks.uart2;
 	port.line = 2;
 
 	if (early_serial_setup(&port) != 0) {
diff --git a/arch/ppc/syslib/ibm440gx_common.c b/arch/ppc/syslib/ibm440gx_common.c
--- a/arch/ppc/syslib/ibm440gx_common.c
+++ b/arch/ppc/syslib/ibm440gx_common.c
@@ -34,8 +34,10 @@ void __init ibm440gx_get_clocks(struct i
 	u32 plld  = CPR_READ(DCRN_CPR_PLLD);
 	u32 uart0 = SDR_READ(DCRN_SDR_UART0);
 	u32 uart1 = SDR_READ(DCRN_SDR_UART1);
-#ifdef CONFIG_440EP
+#if defined(CONFIG_440EP) || defined(CONFIG_440SP)
 	u32 uart2 = SDR_READ(DCRN_SDR_UART2);
+#endif
+#if defined(CONFIG_440EP)
 	u32 uart3 = SDR_READ(DCRN_SDR_UART3);
 #endif
 
@@ -100,12 +102,15 @@ bypass:
 		p->uart1 = ser_clk;
 	else
 		p->uart1 = p->plb / __fix_zero(uart1 & 0xff, 256);
-#ifdef CONFIG_440EP
+
+#if defined(CONFIG_440EP) || (CONFIG_440SP)
 	if (uart2 & 0x00800000)
 		p->uart2 = ser_clk;
 	else
 		p->uart2 = p->plb / __fix_zero(uart2 & 0xff, 256);
+#endif
 
+#ifdef CONFIG_440EP
 	if (uart3 & 0x00800000)
 		p->uart3 = ser_clk;
 	else
diff --git a/arch/ppc/syslib/ibm44x_common.h b/arch/ppc/syslib/ibm44x_common.h
--- a/arch/ppc/syslib/ibm44x_common.h
+++ b/arch/ppc/syslib/ibm44x_common.h
@@ -29,8 +29,10 @@ struct ibm44x_clocks {
 	unsigned int ebc;	/* PerClk */
 	unsigned int uart0;
 	unsigned int uart1;
-#ifdef CONFIG_440EP
+#if defined(CONFIG_440EP) || defined(CONFIG_440SP)
 	unsigned int uart2;
+#endif
+#if defined(CONFIG_440EP)
 	unsigned int uart3;
 #endif
 };
diff --git a/include/asm-ppc/ibm44x.h b/include/asm-ppc/ibm44x.h
--- a/include/asm-ppc/ibm44x.h
+++ b/include/asm-ppc/ibm44x.h
@@ -179,8 +179,10 @@
 #define DCRN_SDR_UART0		0x0120
 #define DCRN_SDR_UART1		0x0121
 
-#ifdef CONFIG_440EP
+#if defined(CONFIG_440EP) || defined(CONFIG_440SP)
 #define DCRN_SDR_UART2		0x0122
+#endif
+#if defined(CONFIG_440EP)
 #define DCRN_SDR_UART3		0x0123
 #define DCRN_SDR_CUST0		0x4000
 #endif