+#if 0 /* For documentation only */
+/**
+ * of_xlate() - Translate a client's device-tree (OF) clock specifier.
+ * @clock: The clock struct to hold the translation result.
+ * @args: The clock specifier values from device tree.
+ *
+ * The clock core calls this function as the first step in implementing
+ * a client's clk_get_by_*() call.
+ *
+ * If this function pointer is set to NULL, the clock core will use a
+ * default implementation, which assumes #clock-cells = <1>, and that
+ * the DT cell contains a simple integer clock ID.
+ *
+ * At present, the clock API solely supports device-tree. If this
+ * changes, other xxx_xlate() functions may be added to support those
+ * other mechanisms.
+ *
+ * Return: 0 if OK, or a negative error code.
+ */
+int of_xlate(struct clk *clock, struct ofnode_phandle_args *args);
+
+/**
+ * request() - Request a translated clock.
+ * @clock: The clock struct to request; this has been fille in by
+ * a previoux xxx_xlate() function call, or by the caller
+ * of clk_request().
+ *
+ * The clock core calls this function as the second step in
+ * implementing a client's clk_get_by_*() call, following a successful
+ * xxx_xlate() call, or as the only step in implementing a client's
+ * clk_request() call.
+ *
+ * Return: 0 if OK, or a negative error code.
+ */
+int request(struct clk *clock);
+
+/**
+ * rfree() - Free a previously requested clock.
+ * @clock: The clock to free.
+ *
+ * Free any resources allocated in request().
+ */
+void rfree(struct clk *clock);
+
+/**
+ * round_rate() - Adjust a rate to the exact rate a clock can provide.
+ * @clk: The clock to manipulate.
+ * @rate: Desidered clock rate in Hz.
+ *
+ * Return: rounded rate in Hz, or -ve error code.
+ */
+ulong round_rate(struct clk *clk, ulong rate);
+
+/**
+ * get_rate() - Get current clock rate.
+ * @clk: The clock to query.
+ *
+ * Return: clock rate in Hz, or -ve error code
+ */
+ulong get_rate(struct clk *clk);
+
+/**
+ * set_rate() - Set current clock rate.
+ * @clk: The clock to manipulate.
+ * @rate: New clock rate in Hz.
+ *
+ * Return: new rate, or -ve error code.
+ */
+ulong set_rate(struct clk *clk, ulong rate);
+
+/**
+ * set_parent() - Set current clock parent
+ * @clk: The clock to manipulate.
+ * @parent: New clock parent.
+ *
+ * Return: zero on success, or -ve error code.
+ */
+int set_parent(struct clk *clk, struct clk *parent);
+
+/**
+ * enable() - Enable a clock.
+ * @clk: The clock to manipulate.
+ *
+ * Return: zero on success, or -ve error code.
+ */
+int enable(struct clk *clk);
+
+/**
+ * disable() - Disable a clock.
+ * @clk: The clock to manipulate.
+ *
+ * Return: zero on success, or -ve error code.
+ */
+int disable(struct clk *clk);
+#endif
+