+
+/**
+ * clk_get_by_name_nodev - Get/request a clock by name without a device.
+ *
+ * This is a version of clk_get_by_name() that does not use a device.
+ *
+ * @node: The client ofnode.
+ * @name: The name of the clock to request, within the client's list of
+ * clocks.
+ * @clock: A pointer to a clock struct to initialize.
+ * @return 0 if OK, or a negative error code.
+ */
+int clk_get_by_name_nodev(ofnode node, const char *name, struct clk *clk);
+
+/**
+ * clock_get_optional_nodev - Get/request an optinonal clock by name
+ * without a device.
+ * @node: The client ofnode.
+ * @name: The name of the clock to request.
+ * @name: The name of the clock to request, within the client's list of
+ * clocks.
+ * @clock: A pointer to a clock struct to initialize.
+ *
+ * Behaves the same as clk_get_by_name_nodev() except where there is
+ * no clock producer, in this case, skip the error number -ENODATA, and
+ * the function returns 0.
+ */
+int clk_get_optional_nodev(ofnode node, const char *name, struct clk *clk);
+
+/**
+ * devm_clk_get - lookup and obtain a managed reference to a clock producer.
+ * @dev: device for clock "consumer"
+ * @id: clock consumer ID
+ *
+ * Returns a struct clk corresponding to the clock producer, or
+ * valid IS_ERR() condition containing errno. The implementation
+ * uses @dev and @id to determine the clock consumer, and thereby
+ * the clock producer. (IOW, @id may be identical strings, but
+ * clk_get may return different clock producers depending on @dev.)
+ *
+ * Drivers must assume that the clock source is not enabled.
+ *
+ * devm_clk_get should not be called from within interrupt context.
+ *
+ * The clock will automatically be freed when the device is unbound
+ * from the bus.
+ */
+struct clk *devm_clk_get(struct udevice *dev, const char *id);
+
+/**
+ * devm_clk_get_optional - lookup and obtain a managed reference to an optional
+ * clock producer.
+ * @dev: device for clock "consumer"
+ * @id: clock consumer ID
+ *
+ * Behaves the same as devm_clk_get() except where there is no clock producer.
+ * In this case, instead of returning -ENOENT, the function returns NULL.
+ */
+struct clk *devm_clk_get_optional(struct udevice *dev, const char *id);
+
+/**
+ * clk_release_all() - Disable (turn off)/Free an array of previously
+ * requested clocks.
+ *
+ * For each clock contained in the clock array, this function will check if
+ * clock has been previously requested and then will disable and free it.
+ *
+ * @clk: A clock struct array that was previously successfully
+ * requested by clk_request/get_by_*().
+ * @count Number of clock contained in the array
+ * @return zero on success, or -ve error code.
+ */
+int clk_release_all(struct clk *clk, int count);
+
+/**
+ * devm_clk_put - "free" a managed clock source
+ * @dev: device used to acquire the clock
+ * @clk: clock source acquired with devm_clk_get()
+ *
+ * Note: drivers must ensure that all clk_enable calls made on this
+ * clock source are balanced by clk_disable calls prior to calling
+ * this function.
+ *
+ * clk_put should not be called from within interrupt context.
+ */
+void devm_clk_put(struct udevice *dev, struct clk *clk);
+