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reset: improve of_xlate documentation

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Mention of_reset_simple_xlate as the default if of_xlate is not set.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2019-10-22 16:51:37 +02:00
parent 3ab831e50c
commit a48108c0c2
2 changed files with 6 additions and 3 deletions
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6
drivers/reset/core.c
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@ -78,8 +78,10 @@ static const char *rcdev_name(struct reset_controller_dev *rcdev)
* @reset_spec: reset line specifier as found in the device tree * @reset_spec: reset line specifier as found in the device tree
* @flags: a flags pointer to fill in (optional) * @flags: a flags pointer to fill in (optional)
* *
* This simple translation function should be used for reset controllers * This static translation function is used by default if of_xlate in
* with 1:1 mapping, where reset lines can be indexed by number without gaps. * :c:type:`reset_controller_dev` is not set. It is useful for all reset
* controllers with 1:1 mapping, where reset lines can be indexed by number
* without gaps.
*/ */
static int of_reset_simple_xlate(struct reset_controller_dev *rcdev, static int of_reset_simple_xlate(struct reset_controller_dev *rcdev,
const struct of_phandle_args *reset_spec) const struct of_phandle_args *reset_spec)

3
include/linux/reset-controller.h
View file

@ -62,7 +62,8 @@ struct reset_control_lookup {
* @of_node: corresponding device tree node as phandle target * @of_node: corresponding device tree node as phandle target
* @of_reset_n_cells: number of cells in reset line specifiers * @of_reset_n_cells: number of cells in reset line specifiers
* @of_xlate: translation function to translate from specifier as found in the * @of_xlate: translation function to translate from specifier as found in the
* device tree to id as given to the reset control ops * device tree to id as given to the reset control ops, defaults
* to :c:func:`of_reset_simple_xlate`.
* @nr_resets: number of reset controls in this reset controller device * @nr_resets: number of reset controls in this reset controller device
*/ */
struct reset_controller_dev { struct reset_controller_dev {