2 * Copyright (c) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <linux/types.h>
15 int soc_clk_dump(void);
19 * get_rate() - Get current clock rate
21 * @dev: Device to check (UCLASS_CLK)
22 * @return clock rate in Hz, or -ve error code
24 ulong (*get_rate)(struct udevice *dev);
27 * set_rate() - Set current clock rate
29 * @dev: Device to adjust
30 * @rate: New clock rate in Hz
31 * @return new rate, or -ve error code
33 ulong (*set_rate)(struct udevice *dev, ulong rate);
36 * enable() - Enable the clock for a peripheral
38 * @dev: clock provider
39 * @periph: Peripheral ID to enable
40 * @return zero on success, or -ve error code
42 int (*enable)(struct udevice *dev, int periph);
45 * get_periph_rate() - Get clock rate for a peripheral
47 * @dev: Device to check (UCLASS_CLK)
48 * @periph: Peripheral ID to check
49 * @return clock rate in Hz, or -ve error code
51 ulong (*get_periph_rate)(struct udevice *dev, int periph);
54 * set_periph_rate() - Set current clock rate for a peripheral
56 * @dev: Device to update (UCLASS_CLK)
57 * @periph: Peripheral ID to update
58 * @return new clock rate in Hz, or -ve error code
60 ulong (*set_periph_rate)(struct udevice *dev, int periph, ulong rate);
63 #define clk_get_ops(dev) ((struct clk_ops *)(dev)->driver->ops)
66 * clk_get_rate() - Get current clock rate
68 * @dev: Device to check (UCLASS_CLK)
69 * @return clock rate in Hz, or -ve error code
71 ulong clk_get_rate(struct udevice *dev);
74 * clk_set_rate() - Set current clock rate
76 * @dev: Device to adjust
77 * @rate: New clock rate in Hz
78 * @return new rate, or -ve error code
80 ulong clk_set_rate(struct udevice *dev, ulong rate);
83 * clk_enable() - Enable the clock for a peripheral
85 * @dev: clock provider
86 * @periph: Peripheral ID to enable
87 * @return zero on success, or -ve error code
89 int clk_enable(struct udevice *dev, int periph);
92 * clk_get_periph_rate() - Get current clock rate for a peripheral
94 * @dev: Device to check (UCLASS_CLK)
95 * @return clock rate in Hz, -ve error code
97 ulong clk_get_periph_rate(struct udevice *dev, int periph);
100 * clk_set_periph_rate() - Set current clock rate for a peripheral
102 * @dev: Device to update (UCLASS_CLK)
103 * @periph: Peripheral ID to update
104 * @return new clock rate in Hz, or -ve error code
106 ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate);