dm: clk: Define clk_get_by_id() for clk operations
This commit adds the clk_get_by_id() function, which is responsible
for getting the udevice with matching clk->id. Such approach allows
re-usage of inherit DM list relationship for the same class (UCLASS_CLK).
As a result - we don't need any other external list - it is just enough
to look for UCLASS_CLK related udevices.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/include/clk.h b/include/clk.h
index 7b2ff8e..f8f56d9 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -345,4 +345,15 @@
{
return !!clk->dev;
}
+
+/**
+ * clk_get_by_id() - Get the clock by its ID
+ *
+ * @id: The clock ID to search for
+ *
+ * @clkp: A pointer to clock struct that has been found among added clocks
+ * to UCLASS_CLK
+ * @return zero on success, or -ENOENT on error
+ */
+int clk_get_by_id(ulong id, struct clk **clkp);
#endif