diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_bittware.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_bittware.dts
index cc386a22dfcf..f065f36d18eb 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex_bittware.dts
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex_bittware.dts
@@ -17,7 +17,7 @@
 	};
 
 	chosen {
-		stdout-path = "serial0:115200n8";
+		stdout-path = "serial0:921600n8";
 	};
 
 	leds {
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
index 1a308ff17759..f05065200a57 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex_socdk.dts
@@ -16,7 +16,7 @@
 	};
 
 	chosen {
-		stdout-path = "serial0:115200n8";
+		stdout-path = "serial0:921600n8";
 	};
 
 	leds {
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index bdc568a4ab66..9e644da47c8f 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1138,7 +1138,7 @@ config SERIAL_ALTERA_UART_MAXPORTS
 config SERIAL_ALTERA_UART_BAUDRATE
 	int "Default baudrate for Altera UART ports"
 	depends on SERIAL_ALTERA_UART
-	default 115200
+	default 921600
 	help
 	  This setting lets you define what the default baudrate is for the
 	  Altera UART ports. The usual default varies from board to board,