pinctrl: add kerneldoc for pinctrl_ops device tree functions

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index c22d0409d2ef..3b894a668d32 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -72,6 +72,15 @@ struct pinctrl_gpio_range {
  *      group selector @pins, and the size of the array in @num_pins
  * @pin_dbg_show: optional debugfs display hook that will provide per-device
  *      info for a certain pin in debugfs
+ * @dt_node_to_map: parse a device tree "pin configuration node", and create
+ *      mapping table entries for it. These are returned through the @map and
+ *      @num_maps output parameters. This function is optional, and may be
+ *      omitted for pinctrl drivers that do not support device tree.
+ * @dt_free_map: free mapping table entries created via @dt_node_to_map. The
+ *      top-level @map pointer must be freed, along with any dynamically
+ *      allocated members of the mapping table entries themselves. This
+ *      function is optional, and may be omitted for pinctrl drivers that do
+ *      not support device tree.
  */
 struct pinctrl_ops {
         int (*get_groups_count) (struct pinctrl_dev *pctldev);