diff --git a/tools/btattach.c b/tools/btattach.c
index ec63ec9..c3c8d79 100644
--- a/tools/btattach.c
+++ b/tools/btattach.c
@@ -217,6 +217,7 @@ static const struct {
 	{ "intel", HCI_UART_INTEL },
 	{ "bcm",   HCI_UART_BCM   },
 	{ "qca",   HCI_UART_QCA   },
+	{ "ag6xx", HCI_UART_AG6XX },
 	{ }
 };
 
diff --git a/tools/hciattach.h b/tools/hciattach.h
index 4279a33..3d25f59 100644
--- a/tools/hciattach.h
+++ b/tools/hciattach.h
@@ -42,6 +42,7 @@
 #define HCI_UART_INTEL	6
 #define HCI_UART_BCM	7
 #define HCI_UART_QCA	8
+#define HCI_UART_AG6XX	9
 
 #define HCI_UART_RAW_DEVICE	0
 #define HCI_UART_RESET_ON_INIT	1