diff --git a/src/soc/broadcom/cygnus/ns16550.c b/src/soc/broadcom/cygnus/ns16550.c
index 4a4702aab8..71a4cb08ef 100644
--- a/src/soc/broadcom/cygnus/ns16550.c
+++ b/src/soc/broadcom/cygnus/ns16550.c
@@ -119,7 +119,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = (uintptr_t)regs;
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/marvell/armada38x/uart.c b/src/soc/marvell/armada38x/uart.c
index dbd8dca78f..c2800d0543 100644
--- a/src/soc/marvell/armada38x/uart.c
+++ b/src/soc/marvell/armada38x/uart.c
@@ -144,7 +144,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/mediatek/mt8173/uart.c b/src/soc/mediatek/mt8173/uart.c
index a30fc411f4..adc8074ac1 100644
--- a/src/soc/mediatek/mt8173/uart.c
+++ b/src/soc/mediatek/mt8173/uart.c
@@ -177,7 +177,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = UART0_BASE;
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/nvidia/tegra124/uart.c b/src/soc/nvidia/tegra124/uart.c
index 7fc8eb626d..1d4934b0a3 100644
--- a/src/soc/nvidia/tegra124/uart.c
+++ b/src/soc/nvidia/tegra124/uart.c
@@ -136,7 +136,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/nvidia/tegra132/uart.c b/src/soc/nvidia/tegra132/uart.c
index 50569e03bf..a530e2dfa4 100644
--- a/src/soc/nvidia/tegra132/uart.c
+++ b/src/soc/nvidia/tegra132/uart.c
@@ -149,7 +149,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/nvidia/tegra210/uart.c b/src/soc/nvidia/tegra210/uart.c
index 40ce6d26f1..1f16067049 100644
--- a/src/soc/nvidia/tegra210/uart.c
+++ b/src/soc/nvidia/tegra210/uart.c
@@ -123,7 +123,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = CONFIG_CONSOLE_SERIAL_TEGRA210_UART_ADDRESS;
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/samsung/exynos5250/uart.c b/src/soc/samsung/exynos5250/uart.c
index 9f644f1d0e..41ef4ae628 100644
--- a/src/soc/samsung/exynos5250/uart.c
+++ b/src/soc/samsung/exynos5250/uart.c
@@ -191,7 +191,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/soc/samsung/exynos5420/uart.c b/src/soc/samsung/exynos5420/uart.c
index 0508567d6d..359050abb2 100644
--- a/src/soc/samsung/exynos5420/uart.c
+++ b/src/soc/samsung/exynos5420/uart.c
@@ -182,7 +182,7 @@ void uart_fill_lb(void *data)
 	serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED;
 	serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
 	serial.baud = default_baudrate();
-	serial.regwidth = 1;
+	serial.regwidth = 4;
 	lb_add_serial(&serial, data);
 
 	lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);