diff --git a/src/superio/ite/it8673f/it8673f_early_serial.c b/src/superio/ite/it8673f/it8673f_early_serial.c
index b47d36f5e8..0bb8f05182 100644
--- a/src/superio/ite/it8673f/it8673f_early_serial.c
+++ b/src/superio/ite/it8673f/it8673f_early_serial.c
@@ -86,7 +86,7 @@ static void it8673f_enable_serial(device_t dev, unsigned iobase)
 	it8673f_sio_write(IT8673F_KBCK, 0x30, 0x1); /* Keyboard */
 	it8673f_sio_write(IT8673F_KBCM, 0x30, 0x1); /* Mouse */
 
-	/* Select 24MHz CLKIN (clear bit 0). TODO: is this really needed? */
+	/* Select 24MHz CLKIN (clear bit 0). */
 	it8673f_sio_write(0x00, IT8673F_CONFIG_REG_CLOCKSEL, 0x00);
 
 	/* Clear software suspend mode (clear bit 0). */
diff --git a/src/superio/ite/it8705f/it8705f_early_serial.c b/src/superio/ite/it8705f/it8705f_early_serial.c
index 7b5c97e247..54ff45bd11 100644
--- a/src/superio/ite/it8705f/it8705f_early_serial.c
+++ b/src/superio/ite/it8705f/it8705f_early_serial.c
@@ -78,8 +78,8 @@ static void it8705f_enable_serial(device_t dev, unsigned iobase)
 	it8705f_sio_write(IT8705F_IR,   0x30, 0x1); /* Consumer IR */
 	it8705f_sio_write(IT8705F_MIDI, 0x30, 0x1); /* MIDI port */
 
-	/* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
-	/* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CLOCKSEL, 0x01); */
+	/* Select 24MHz CLKIN (set bit 0). */
+	it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CLOCKSEL, 0x01);
 
 	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
 	/* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_SWSUSP, 0x00); */
diff --git a/src/superio/ite/it8712f/it8712f_early_serial.c b/src/superio/ite/it8712f/it8712f_early_serial.c
index 3d6c2e8f6a..932fcb2fe3 100644
--- a/src/superio/ite/it8712f/it8712f_early_serial.c
+++ b/src/superio/ite/it8712f/it8712f_early_serial.c
@@ -78,8 +78,8 @@ static void it8712f_enable_serial(device_t dev, unsigned iobase)
 	it8712f_sio_write(IT8712F_GAME, 0x30, 0x1); /* GAME port */
 	it8712f_sio_write(IT8712F_IR,   0x30, 0x1); /* Consumer IR */
 
-	/* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
-	/* it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x01); */
+	/* Select 24MHz CLKIN (set bit 0). */
+	it8712f_sio_write(0x00, IT8712F_CONFIG_REG_CLOCKSEL, 0x01);
 
 	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
 	/* it8712f_sio_write(0x00, IT8712F_CONFIG_REG_SWSUSP, 0x00); */
diff --git a/src/superio/ite/it8716f/it8716f_early_serial.c b/src/superio/ite/it8716f/it8716f_early_serial.c
index 7c451b7a49..49df986e19 100644
--- a/src/superio/ite/it8716f/it8716f_early_serial.c
+++ b/src/superio/ite/it8716f/it8716f_early_serial.c
@@ -78,8 +78,8 @@ static void it8716f_enable_serial(device_t dev, unsigned iobase)
 	it8716f_sio_write(IT8716F_GAME, 0x30, 0x1); /* GAME port */
 	it8716f_sio_write(IT8716F_IR,   0x30, 0x1); /* Consumer IR */
 
-	/* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
-	/* it8716f_sio_write(0x00, IT8716F_CONFIG_REG_CLOCKSEL, 0x01); */
+	/* Select 24MHz CLKIN (set bit 0). */
+	it8716f_sio_write(0x00, IT8716F_CONFIG_REG_CLOCKSEL, 0x01);
 
 	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
 	/* it8716f_sio_write(0x00, IT8716F_CONFIG_REG_SWSUSP, 0x00); */
diff --git a/src/superio/ite/it8718f/it8718f_early_serial.c b/src/superio/ite/it8718f/it8718f_early_serial.c
index ed750a042d..d71fbe1991 100644
--- a/src/superio/ite/it8718f/it8718f_early_serial.c
+++ b/src/superio/ite/it8718f/it8718f_early_serial.c
@@ -76,8 +76,8 @@ static void it8718f_enable_serial(device_t dev, unsigned iobase)
 	it8718f_sio_write(IT8718F_KBCM, 0x30, 0x1); /* Mouse */
 	it8718f_sio_write(IT8718F_IR,   0x30, 0x1); /* Consumer IR */
 
-	/* Select 24MHz/48MHz CLKIN (set/clear bit 0). TODO: Needed? */
-	/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CLOCKSEL, 0x01); */
+	/* Select 24MHz CLKIN (set bit 0). */
+	it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CLOCKSEL, 0x01);
 
 	/* Clear software suspend mode (clear bit 0). TODO: Needed? */
 	/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_SWSUSP, 0x00); */