diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -89,11 +89,19 @@ void smc1_lineif(struct uart_cpm_port *p
 {
 	volatile iop_cpm2_t *io = &cpm2_immr->im_ioport;
 
+#ifdef CONFIG_8272
+	/* SMC1 is only on port C on 8272 */
+	io->iop_pparc |= 0x0c000000;
+	io->iop_pdirc |= 0x04000000;
+	io->iop_pdirc &= ~0x08000000;
+	io->iop_psorc &= ~0x0c000000;
+#else
 	/* SMC1 is only on port D */
 	io->iop_ppard |= 0x00c00000;
 	io->iop_pdird |= 0x00400000;
 	io->iop_pdird &= ~0x00800000;
 	io->iop_psord &= ~0x00c00000;
+#endif
 
 	/* Wire BRG1 to SMC1 */
 	cpm2_immr->im_cpmux.cmx_smr &= 0x0f;