u-boot/include/clk-uclass.h

6  * SPDX-License-Identifier:	GPL-2.0+
12 /* See clk.h for background documentation. */
14 #include <clk.h>
19  * struct clk_ops - The functions that a clock driver must implement.
23 	 * of_xlate - Translate a client's device-tree (OF) clock specifier.
29 	 * default implementation, which assumes #clock-cells = <1>, and that
32 	 * At present, the clock API solely supports device-tree. If this
40 	int (*of_xlate)(struct clk *clock,
43 	 * request - Request a translated clock.
55 	int (*request)(struct clk *clock);
57 	 * free - Free a previously requested clock.
64 	int (*free)(struct clk *clock);
66 	 * get_rate() - Get current clock rate.
68 	 * @clk:	The clock to query.
69 	 * @return clock rate in Hz, or -ve error code
71 	ulong (*get_rate)(struct clk *clk);
73 	 * set_rate() - Set current clock rate.
75 	 * @clk:	The clock to manipulate.
77 	 * @return new rate, or -ve error code.
79 	ulong (*set_rate)(struct clk *clk, ulong rate);
81 	 * clk_get_phase() - Get the phase shift of a clock signal.
83 	 * @clk:	The clock to manipulate.
84 	 * @return the phase shift of a clock node in degrees,
85 	 *		otherwise returns -ve error code.
87 	int (*get_phase)(struct clk *clk);
90 	 * clk_set_rate() - Adjust the phase shift of a clock signal.
92 	 * @clk:	The clock to manipulate.
94 	 * @return 0 on success, or -ve error code.
96 	int (*set_phase)(struct clk *clk, int degrees);
98 	 * set_parent() - Set current clock parent
100 	 * @clk:        The clock to manipulate.
102 	 * @return zero on success, or -ve error code.
104 	int (*set_parent)(struct clk *clk, struct clk *parent);
106 	 * enable() - Enable a clock.
108 	 * @clk:	The clock to manipulate.
109 	 * @return zero on success, or -ve error code.
111 	int (*enable)(struct clk *clk);
113 	 * disable() - Disable a clock.
115 	 * @clk:	The clock to manipulate.
116 	 * @return zero on success, or -ve error code.
118 	int (*disable)(struct clk *clk);