diff --git a/drivers/serial/Kconfig-pl011 b/drivers/serial/Kconfig-pl011
index c4c94ba221..b2df5f9d38 100644
--- a/drivers/serial/Kconfig-pl011
+++ b/drivers/serial/Kconfig-pl011
@@ -18,6 +18,10 @@ config UART0_BASE
 config UART0_IRQ
 	int "PL011 UART0 IRQ number"
 
+config UART0_CLK_FREQ
+	int "PL011 UART0 clock frequency"
+	default 24000000
+
 endif # UART0_PL011
 
 config UART1_PL011
@@ -33,6 +37,10 @@ config UART1_BASE
 config UART1_IRQ
 	int "PL011 UART1 IRQ number"
 
+config UART1_CLK_FREQ
+	int "PL011 UART1 clock frequency"
+	default 24000000
+
 endif # UART1_PL011
 
 config UART2_PL011
@@ -48,6 +56,10 @@ config UART2_BASE
 config UART2_IRQ
 	int "PL011 UART2 IRQ number"
 
+config UART2_CLK_FREQ
+	int "PL011 UART2 clock frequency"
+	default 24000000
+
 endif # UART2_PL011
 
 config UART3_PL011
@@ -63,6 +75,10 @@ config UART3_BASE
 config UART3_IRQ
 	int "PL011 UART3 IRQ number"
 
+config UART3_CLK_FREQ
+	int "PL011 UART3 clock frequency"
+	default 24000000
+
 endif # UART3_PL011
 
 endif # UART_PL011
diff --git a/drivers/serial/uart_pl011.c b/drivers/serial/uart_pl011.c
index fd4fed74a7..16619009d5 100644
--- a/drivers/serial/uart_pl011.c
+++ b/drivers/serial/uart_pl011.c
@@ -301,7 +301,7 @@ static struct pl011_uart_port_s g_uart0priv =
   .config =
     {
       .uart         = (FAR volatile struct pl011_regs *)CONFIG_UART0_BASE,
-      .sys_clk_freq = 24000000,
+      .sys_clk_freq = CONFIG_UART0_CLK_FREQ,
     },
 
     .irq_num    = CONFIG_UART0_IRQ,
@@ -344,7 +344,7 @@ static struct pl011_uart_port_s g_uart1priv =
   .config =
     {
       .uart         = (FAR volatile struct pl011_regs *)CONFIG_UART1_BASE,
-      .sys_clk_freq = 24000000,
+      .sys_clk_freq = CONFIG_UART1_CLK_FREQ,
     },
 
     .irq_num    = CONFIG_UART1_IRQ,
@@ -387,7 +387,7 @@ static struct pl011_uart_port_s g_uart2priv =
   .config =
     {
       .uart         = (FAR volatile struct pl011_regs *)CONFIG_UART2_BASE,
-      .sys_clk_freq = 24000000,
+      .sys_clk_freq = CONFIG_UART2_CLK_FREQ,
     },
 
     .irq_num    = CONFIG_UART2_IRQ,
@@ -430,7 +430,7 @@ static struct pl011_uart_port_s g_uart3priv =
   .config =
     {
       .uart         = (FAR volatile struct pl011_regs *)CONFIG_UART3_BASE,
-      .sys_clk_freq = 24000000,
+      .sys_clk_freq = CONFIG_UART3_CLK_FREQ,
     },
 
     .irq_num    = CONFIG_UART3_IRQ,