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path: root/drivers/gpio/gpiolib.c
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Diffstat (limited to 'drivers/gpio/gpiolib.c')
-rw-r--r--drivers/gpio/gpiolib.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 55d596f3035e5..5dfd3c17fffc9 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2078,6 +2078,11 @@ EXPORT_SYMBOL_GPL(gpiochip_generic_config);
* @pctldev: the pin controller to map to
* @gpio_offset: the start offset in the current gpio_chip number space
* @pin_group: name of the pin group inside the pin controller
+ *
+ * Calling this function directly from a DeviceTree-supported
+ * pinctrl driver is DEPRECATED. Please see Section 2.1 of
+ * Documentation/devicetree/bindings/gpio/gpio.txt on how to
+ * bind pinctrl and gpio drivers via the "gpio-ranges" property.
*/
int gpiochip_add_pingroup_range(struct gpio_chip *chip,
struct pinctrl_dev *pctldev,
@@ -2131,6 +2136,11 @@ EXPORT_SYMBOL_GPL(gpiochip_add_pingroup_range);
*
* Returns:
* 0 on success, or a negative error-code on failure.
+ *
+ * Calling this function directly from a DeviceTree-supported
+ * pinctrl driver is DEPRECATED. Please see Section 2.1 of
+ * Documentation/devicetree/bindings/gpio/gpio.txt on how to
+ * bind pinctrl and gpio drivers via the "gpio-ranges" property.
*/
int gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
unsigned int gpio_offset, unsigned int pin_offset,