diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 2ca735f976b7..69d1a906f5cc 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -476,6 +476,10 @@ config GPIO_PCA953X
 	  16 bits:	max7312, max7313, pca9535, pca9539, pca9555, pca9575,
 			tca6416
 
+	  24 bits:	tca6424
+
+	  40 bits:	pca9505
+
 config GPIO_PCA953X_IRQ
 	bool "Interrupt controller support for PCA953x"
 	depends on GPIO_PCA953X=y
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index 019b23b955a2..cede6f600a69 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -1,5 +1,5 @@
 /*
- *  PCA953x 4/8/16 bit I/O ports
+ *  PCA953x 4/8/16/24/40 bit I/O ports
  *
  *  Copyright (C) 2005 Ben Gardner <bgardner@wabtec.com>
  *  Copyright (C) 2007 Marvell International Ltd.