diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index ad1a503ac75..2d53923eb3d 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -2012,18 +2012,19 @@ config SCI1_2STOP
 
 endmenu # SCI1 Configuration
 
-config PSEUDOTERM
+menuconfig PSEUDOTERM
 	bool "Pseudo-Terminal (PTY) suppport"
 	default n
 	select ARCH_HAVE_SERIAL_TERMIOS
 	---help---
 		Enable support support for master and slave pseudo-terminal devices.
 
+if PSEUDOTERM
+
 choice
 	prompt "PTY model"
 	default PSEUDOTERM_BSD if DISABLE_PSEUDOFS_OPERATIONS
 	default PSEUDOTERM_SUSV1 if !DISABLE_PSEUDOFS_OPERATIONS
-	depends on PSEUDOTERM
 
 config PSEUDOTERM_BSD
 	bool "BSD style"
@@ -2047,3 +2048,17 @@ config PSEUDOTERM_SUSV1
 		Where N is the minor number
 
 endchoice # PTY model
+
+config PSEUDOTERM_RXBUFSIZE
+	int "Pseudo-Terminal Rx buffer size"
+	default 256
+	---help---
+		Master-to-slave pipe buffer size.  Default: 256
+
+config PSEUDOTERM_TXBUFSIZE
+	int "Pseudo-Terminal Tx buffer size"
+	default 256
+	---help---
+		Slave-to-master buffer size.  Default: 256
+
+endif # PSEUDOTERM
diff --git a/drivers/serial/pty.c b/drivers/serial/pty.c
index c8edacd9871..c3c090abcee 100644
--- a/drivers/serial/pty.c
+++ b/drivers/serial/pty.c
@@ -918,15 +918,19 @@ int pty_register(int minor)
   devpair->pp_master.pd_master  = true;
   devpair->pp_slave.pd_devpair  = devpair;
 
-  /* Create two pipes */
+  /* Create two pipes:
+   *
+   *   pipe_a:  Master source, slave sink (TX, slave-to-master)
+   *   pipe_b:  Master sink, slave source (RX, master-to-slave)
+   */
 
-  ret = pipe(pipe_a);
+  ret = pipe2(pipe_a, CONFIG_PSEUDOTERM_TXBUFSIZE);
   if (ret < 0)
     {
       goto errout_with_devpair;
     }
 
-  ret = pipe(pipe_b);
+  ret = pipe2(pipe_b, CONFIG_PSEUDOTERM_RXBUFSIZE);
   if (ret < 0)
     {
       goto errout_with_pipea;