1 /*
2  * clock.h
3  *
4  * clock header
5  *
6  * Copyright (C) 2011, Texas Instruments Incorporated - http://www.ti.com/
7  *
8  * SPDX-License-Identifier:	GPL-2.0+
9  */
10 
11 #ifndef _CLOCKS_H_
12 #define _CLOCKS_H_
13 
14 #include <asm/arch/clocks_am33xx.h>
15 #include <asm/arch/hardware.h>
16 
17 #if defined(CONFIG_TI816X) || defined(CONFIG_TI814X)
18 #include <asm/arch/clock_ti81xx.h>
19 #endif
20 
21 #define LDELAY 1000000
22 
23 /*CM_<clock_domain>__CLKCTRL */
24 #define CD_CLKCTRL_CLKTRCTRL_SHIFT		0
25 #define CD_CLKCTRL_CLKTRCTRL_MASK		3
26 
27 #define CD_CLKCTRL_CLKTRCTRL_NO_SLEEP		0
28 #define CD_CLKCTRL_CLKTRCTRL_SW_SLEEP		1
29 #define CD_CLKCTRL_CLKTRCTRL_SW_WKUP		2
30 
31 /* CM_<clock_domain>_<module>_CLKCTRL */
32 #define MODULE_CLKCTRL_MODULEMODE_SHIFT		0
33 #define MODULE_CLKCTRL_MODULEMODE_MASK		3
34 #define MODULE_CLKCTRL_IDLEST_SHIFT		16
35 #define MODULE_CLKCTRL_IDLEST_MASK		(3 << 16)
36 
37 #define MODULE_CLKCTRL_MODULEMODE_SW_DISABLE		0
38 #define MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN	2
39 
40 #define MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL	0
41 #define MODULE_CLKCTRL_IDLEST_TRANSITIONING	1
42 #define MODULE_CLKCTRL_IDLEST_IDLE		2
43 #define MODULE_CLKCTRL_IDLEST_DISABLED		3
44 
45 /* CM_CLKMODE_DPLL */
46 #define CM_CLKMODE_DPLL_SSC_EN_SHIFT		12
47 #define CM_CLKMODE_DPLL_SSC_EN_MASK		(1 << 12)
48 #define CM_CLKMODE_DPLL_SSC_ACK_MASK		(1 << 13)
49 #define CM_CLKMODE_DPLL_SSC_DOWNSPREAD_MASK	(1 << 14)
50 #define CM_CLKMODE_DPLL_SSC_TYPE_MASK		(1 << 15)
51 #define CM_CLKMODE_DPLL_REGM4XEN_SHIFT		11
52 #define CM_CLKMODE_DPLL_REGM4XEN_MASK		(1 << 11)
53 #define CM_CLKMODE_DPLL_LPMODE_EN_SHIFT		10
54 #define CM_CLKMODE_DPLL_LPMODE_EN_MASK		(1 << 10)
55 #define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_SHIFT	9
56 #define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK	(1 << 9)
57 #define CM_CLKMODE_DPLL_DRIFTGUARD_EN_SHIFT	8
58 #define CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK	(1 << 8)
59 #define CM_CLKMODE_DPLL_RAMP_RATE_SHIFT		5
60 #define CM_CLKMODE_DPLL_RAMP_RATE_MASK		(0x7 << 5)
61 #define CM_CLKMODE_DPLL_EN_SHIFT		0
62 #define CM_CLKMODE_DPLL_EN_MASK			(0x7 << 0)
63 
64 #define CM_CLKMODE_DPLL_DPLL_EN_SHIFT		0
65 #define CM_CLKMODE_DPLL_DPLL_EN_MASK		7
66 
67 #define DPLL_EN_STOP			1
68 #define DPLL_EN_MN_BYPASS		4
69 #define DPLL_EN_LOW_POWER_BYPASS	5
70 #define DPLL_EN_LOCK			7
71 
72 /* CM_IDLEST_DPLL fields */
73 #define ST_DPLL_CLK_MASK		1
74 
75 /* CM_CLKSEL_DPLL */
76 #define CM_CLKSEL_DPLL_M_SHIFT			8
77 #define CM_CLKSEL_DPLL_M_MASK			(0x7FF << 8)
78 #define CM_CLKSEL_DPLL_N_SHIFT			0
79 #define CM_CLKSEL_DPLL_N_MASK			0x7F
80 
81 struct dpll_params {
82 	u32 m;
83 	u32 n;
84 	s8 m2;
85 	s8 m3;
86 	s8 m4;
87 	s8 m5;
88 	s8 m6;
89 };
90 
91 struct dpll_regs {
92 	u32 cm_clkmode_dpll;
93 	u32 cm_idlest_dpll;
94 	u32 cm_autoidle_dpll;
95 	u32 cm_clksel_dpll;
96 	u32 cm_div_m2_dpll;
97 	u32 cm_div_m3_dpll;
98 	u32 cm_div_m4_dpll;
99 	u32 cm_div_m5_dpll;
100 	u32 cm_div_m6_dpll;
101 };
102 
103 extern const struct dpll_regs dpll_mpu_regs;
104 extern const struct dpll_regs dpll_core_regs;
105 extern const struct dpll_regs dpll_per_regs;
106 extern const struct dpll_regs dpll_ddr_regs;
107 extern const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS];
108 extern const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ];
109 extern const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ];
110 extern const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ];
111 extern const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ];
112 extern const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ];
113 
114 extern struct cm_wkuppll *const cmwkup;
115 
116 const struct dpll_params *get_dpll_mpu_params(void);
117 const struct dpll_params *get_dpll_core_params(void);
118 const struct dpll_params *get_dpll_per_params(void);
119 const struct dpll_params *get_dpll_ddr_params(void);
120 void scale_vcores(void);
121 void do_setup_dpll(const struct dpll_regs *, const struct dpll_params *);
122 void prcm_init(void);
123 void enable_basic_clocks(void);
124 void do_enable_clocks(u32 *const *, u32 *const *, u8);
125 void do_disable_clocks(u32 *const *, u32 *const *, u8);
126 
127 void set_mpu_spreadspectrum(int permille);
128 #endif
129