Index: head/share/man/man9/fdt_pinctrl.9
===================================================================
--- head/share/man/man9/fdt_pinctrl.9
+++ head/share/man/man9/fdt_pinctrl.9
@@ -125,6 +125,36 @@
 }
 
 static int
+foo_is_gpio(device_t dev, device_t gpiodev, bool *is_gpio)
+{
+	return (foo_is_pin_func_gpio(is_gpio));
+}
+
+static int
+foo_set_flags(device_t dev, device_t gpiodev, uint32_t pin, uint32_t flags)
+{
+	int rv;
+
+	rv = foo_is_pin_func_gpio(is_gpio);
+	if (rv != 0)
+		return (rv);
+	foo_set_flags(pin, flags);
+	return (0);
+}
+
+static int
+foo_get_flags(device_t dev, device_t gpiodev, uint32_t pin, uint32_t *flags)
+{
+	int rv;
+
+	rv = foo_is_pin_func_gpio(is_gpio);
+	if (rv != 0)
+		return (rv);
+	foo_get_flags(pin, flags);
+	return (0);
+}
+
+static int
 foo_attach(device_t dev)
 {
 	...
@@ -144,6 +174,9 @@
 
 	/* fdt_pinctrl interface */
 	DEVMETHOD(fdt_pinctrl_configure, foo_configure_pins),
+	DEVMETHOD(fdt_pinctrl_is_gpio, foo_is_gpio),
+	DEVMETHOD(fdt_pinctrl_set_flags, foo_set_flags),
+	DEVMETHOD(fdt_pinctrl_get_flags, foo_get_flags),
 
 	/* Terminate method list */
 	DEVMETHOD_END
Index: head/sys/dev/fdt/fdt_pinctrl_if.m
===================================================================
--- head/sys/dev/fdt/fdt_pinctrl_if.m
+++ head/sys/dev/fdt/fdt_pinctrl_if.m
@@ -36,6 +36,31 @@
 
 INTERFACE fdt_pinctrl;
 
+CODE {
+	static int
+	fdt_pinctrl_default_is_gpio(device_t pinctrl, device_t gpio, bool *is_gpio)
+	{
+
+		return (EOPNOTSUPP);
+	}
+
+	static int
+	fdt_pinctrl_default_set_flags(device_t pinctrl, device_t gpio, uint32_t pin,
+	    uint32_t flags)
+	{
+
+		return (EOPNOTSUPP);
+	}
+
+	static int
+	fdt_pinctrl_default_get_flags(device_t pinctrl, device_t gpio, uint32_t pin,
+	    uint32_t *flags)
+	{
+
+		return (EOPNOTSUPP);
+	}
+};
+
 # Needed for timestamping device probe/attach calls
 HEADER {
 	#include <sys/tslog.h>
@@ -57,3 +82,36 @@
 	phandle_t	cfgxref;
 };
 
+
+#
+# Test if the pin is in gpio mode
+# Called from a gpio device
+#
+METHOD int is_gpio {
+	device_t pinctrl;
+	device_t gpio;
+	uint32_t pin;
+	bool *is_gpio;
+} DEFAULT fdt_pinctrl_default_is_gpio;
+
+#
+# Set the flags of a pin
+# Called from a gpio device
+#
+METHOD int set_flags {
+	device_t pinctrl;
+	device_t gpio;
+	uint32_t pin;
+	uint32_t flags;
+} DEFAULT fdt_pinctrl_default_set_flags;
+
+#
+# Get the flags of a pin
+# Called from a gpio device
+#
+METHOD int get_flags {
+	device_t pinctrl;
+	device_t gpio;
+	uint32_t pin;
+	uint32_t *flags;
+} DEFAULT fdt_pinctrl_default_get_flags;