clk: implement clk_hw_reparent

clk_hw_reparent does a bit of work in Linux to update the cached clock
tree, but we have no cached clock tree in barebox, so just implement it
as empty stub.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20231127064947.2207726-9-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/clk.h b/include/linux/clk.h
index 28ed2d2bfd..18fda074fd 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -431,6 +431,11 @@ struct clk_divider {
 extern const struct clk_ops clk_divider_ops;
 extern const struct clk_ops clk_divider_ro_ops;
 
+static inline void clk_hw_reparent(struct clk_hw *hw, struct clk_hw *new_parent)
+{
+	/* clk_get_parent always reads from HW, so nothing to update here */
+}
+
 unsigned long divider_recalc_rate(struct clk *clk, unsigned long parent_rate,
 		unsigned int val,
 		const struct clk_div_table *table,