2 * arch/arm/mach-tegra/include/mach/clock.h
4 * Copyright (C) 2010 Google, Inc.
7 * Colin Cross <ccross@google.com>
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 #ifndef __MACH_TEGRA_CLOCK_H
21 #define __MACH_TEGRA_CLOCK_H
23 #include <linux/list.h>
24 #include <linux/clkdev.h>
26 #define DIV_BUS (1 << 0)
27 #define DIV_U71 (1 << 1)
28 #define DIV_U71_FIXED (1 << 2)
29 #define DIV_2 (1 << 3)
30 #define DIV_U16 (1 << 4)
31 #define PLL_FIXED (1 << 5)
32 #define PLL_HAS_CPCON (1 << 6)
35 #define PERIPH_NO_RESET (1 << 9)
36 #define PERIPH_NO_ENB (1 << 10)
37 #define PERIPH_EMC_ENB (1 << 11)
38 #define PERIPH_MANUAL_RESET (1 << 12)
39 #define PLL_ALT_MISC_REG (1 << 13)
40 #define PLLU (1 << 14)
41 #define ENABLE_ON_INIT (1 << 28)
50 struct clk_pll_table {
51 unsigned long input_rate;
52 unsigned long output_rate;
60 void (*init)(struct clk *);
61 int (*enable)(struct clk *);
62 void (*disable)(struct clk *);
63 int (*set_parent)(struct clk *, struct clk *);
64 int (*set_rate)(struct clk *, unsigned long);
65 long (*round_rate)(struct clk *, unsigned long);
66 void (*reset)(struct clk *, bool);
76 /* node for master clocks list */
77 struct list_head node;
78 struct list_head children; /* list of children */
79 struct list_head sibling; /* node for children */
80 #ifdef CONFIG_DEBUG_FS
82 struct dentry *parent_dent;
86 struct clk_lookup lookup;
88 unsigned long max_rate;
96 #ifdef CONFIG_DEBUG_FS
101 unsigned long input_min;
102 unsigned long input_max;
103 unsigned long cf_min;
104 unsigned long cf_max;
105 unsigned long vco_min;
106 unsigned long vco_max;
107 const struct clk_pll_table *pll_table;
115 const struct clk_mux_sel *inputs;
119 /* Virtual cpu clock */
125 struct clk_duplicate {
127 struct clk_lookup lookup;
130 struct tegra_clk_init_table {
137 void tegra2_init_clocks(void);
138 void tegra2_periph_reset_deassert(struct clk *c);
139 void tegra2_periph_reset_assert(struct clk *c);
140 void clk_init(struct clk *clk);
141 struct clk *tegra_get_clock_by_name(const char *name);
142 unsigned long clk_measure_input_freq(void);
143 void clk_disable_locked(struct clk *c);
144 int clk_enable_locked(struct clk *c);
145 int clk_set_parent_locked(struct clk *c, struct clk *parent);
146 int clk_set_rate_locked(struct clk *c, unsigned long rate);
147 int clk_reparent(struct clk *c, struct clk *parent);
148 void tegra_clk_init_from_table(struct tegra_clk_init_table *table);