clk: add struct clk_init_data::parent_hws

For cases where all clock parents are internal to the clock controller,
parent_hws allows specifying direct pointers to the clk_hw structures
instead of globally unique names. Add support for this to barebox to be
used by the incoming STM32MP13 clock driver.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20231127064947.2207726-8-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/clk.h b/include/linux/clk.h
index 6a33f28ee6..28ed2d2bfd 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -329,6 +329,8 @@ struct clk_ops {
  * @name: clock name
  * @ops: operations this clock supports
  * @parent_names: array of string names for all possible parents
+ * @parent_hws: array of pointers to all possible parents (when all parents
+ *              are internal to the clk controller)
  * @num_parents: number of possible parents
  * @flags: framework-level hints and quirks
  */
@@ -336,6 +338,7 @@ struct clk_init_data {
 	const char		*name;
 	const struct clk_ops	*ops;
 	const char		* const *parent_names;
+	const struct clk_hw	**parent_hws;
 	unsigned int		num_parents;
 	unsigned long		flags;
 };