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Diffstat (limited to 'include/asm-generic/gpio.h')
-rw-r--r--include/asm-generic/gpio.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index dd0bdf2315e..c4a7fd28439 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -580,7 +580,8 @@ int gpio_request_by_name(struct udevice *dev, const char *list_name,
* This allows boards to implement common behaviours using GPIOs while not
* requiring specific GPIO offsets be used.
*
- * @dev: An instance of a GPIO controller udevice
+ * @dev: An instance of a GPIO controller udevice, or NULL to search
+ * all GPIO controller devices
* @line_name: The name of the GPIO (e.g. "bmc-secure-boot")
* @desc: A GPIO descriptor that is populated with the requested GPIO
* upon return