clk: of: helper for determining number of parent clocks
Walks the "clocks" array of parent clock phandles and returns the
number.
Signed-off-by: Mike Turquette <mturquette@linaro.org>
(cherry picked from commit f61027426a5bc7093aa8359a411b053a35bb4b68)
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 1144e8c..fccac4a 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -2084,6 +2084,12 @@
return clk;
}
+int of_clk_get_parent_count(struct device_node *np)
+{
+ return of_count_phandle_with_args(np, "clocks", "#clock-cells");
+}
+EXPORT_SYMBOL_GPL(of_clk_get_parent_count);
+
const char *of_clk_get_parent_name(struct device_node *np, int index)
{
struct of_phandle_args clkspec;
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 1186098..4c544c81 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -435,6 +435,7 @@
unsigned int clk_num;
};
struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data);
+int of_clk_get_parent_count(struct device_node *np);
const char *of_clk_get_parent_name(struct device_node *np, int index);
void of_clk_init(const struct of_device_id *matches);