diff --git a/src/soc/amd/cezanne/uart.c b/src/soc/amd/cezanne/uart.c
index 7917ebd195..64252cad2b 100644
--- a/src/soc/amd/cezanne/uart.c
+++ b/src/soc/amd/cezanne/uart.c
@@ -37,7 +37,7 @@ uintptr_t get_uart_base(unsigned int idx)
 
 void clear_uart_legacy_config(void)
 {
-	write16((void *)FCH_LEGACY_UART_DECODE, 0);
+	write16p(FCH_LEGACY_UART_DECODE, 0);
 }
 
 void set_uart_config(unsigned int idx)
diff --git a/src/soc/amd/mendocino/uart.c b/src/soc/amd/mendocino/uart.c
index 66e0cf1caa..ac98a79676 100644
--- a/src/soc/amd/mendocino/uart.c
+++ b/src/soc/amd/mendocino/uart.c
@@ -49,7 +49,7 @@ uintptr_t get_uart_base(unsigned int idx)
 
 void clear_uart_legacy_config(void)
 {
-	write16((void *)FCH_LEGACY_UART_DECODE, 0);
+	write16p(FCH_LEGACY_UART_DECODE, 0);
 }
 
 void set_uart_config(unsigned int idx)
diff --git a/src/soc/amd/picasso/uart.c b/src/soc/amd/picasso/uart.c
index 5763a5b17c..4ae4c5ced4 100644
--- a/src/soc/amd/picasso/uart.c
+++ b/src/soc/amd/picasso/uart.c
@@ -45,7 +45,7 @@ uintptr_t get_uart_base(unsigned int idx)
 
 void clear_uart_legacy_config(void)
 {
-	write16((void *)FCH_LEGACY_UART_DECODE, 0);
+	write16p(FCH_LEGACY_UART_DECODE, 0);
 }
 
 void set_uart_config(unsigned int idx)