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 
16 #ifdef CONFIG_TI81XX
17 #include <asm/arch/clock_ti81xx.h>
18 #endif
19 
20 #define LDELAY 1000000
21 
22 /*CM_<clock_domain>__CLKCTRL */
23 #define CD_CLKCTRL_CLKTRCTRL_SHIFT		0
24 #define CD_CLKCTRL_CLKTRCTRL_MASK		3
25 
26 #define CD_CLKCTRL_CLKTRCTRL_NO_SLEEP		0
27 #define CD_CLKCTRL_CLKTRCTRL_SW_SLEEP		1
28 #define CD_CLKCTRL_CLKTRCTRL_SW_WKUP		2
29 
30 /* CM_<clock_domain>_<module>_CLKCTRL */
31 #define MODULE_CLKCTRL_MODULEMODE_SHIFT		0
32 #define MODULE_CLKCTRL_MODULEMODE_MASK		3
33 #define MODULE_CLKCTRL_IDLEST_SHIFT		16
34 #define MODULE_CLKCTRL_IDLEST_MASK		(3 << 16)
35 
36 #define MODULE_CLKCTRL_MODULEMODE_SW_DISABLE		0
37 #define MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN	2
38 
39 #define MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL	0
40 #define MODULE_CLKCTRL_IDLEST_TRANSITIONING	1
41 #define MODULE_CLKCTRL_IDLEST_IDLE		2
42 #define MODULE_CLKCTRL_IDLEST_DISABLED		3
43 
44 /* CM_CLKMODE_DPLL */
45 #define CM_CLKMODE_DPLL_SSC_EN_SHIFT		12
46 #define CM_CLKMODE_DPLL_SSC_EN_MASK		(1 << 12)
47 #define CM_CLKMODE_DPLL_REGM4XEN_SHIFT		11
48 #define CM_CLKMODE_DPLL_REGM4XEN_MASK		(1 << 11)
49 #define CM_CLKMODE_DPLL_LPMODE_EN_SHIFT		10
50 #define CM_CLKMODE_DPLL_LPMODE_EN_MASK		(1 << 10)
51 #define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_SHIFT	9
52 #define CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK	(1 << 9)
53 #define CM_CLKMODE_DPLL_DRIFTGUARD_EN_SHIFT	8
54 #define CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK	(1 << 8)
55 #define CM_CLKMODE_DPLL_RAMP_RATE_SHIFT		5
56 #define CM_CLKMODE_DPLL_RAMP_RATE_MASK		(0x7 << 5)
57 #define CM_CLKMODE_DPLL_EN_SHIFT		0
58 #define CM_CLKMODE_DPLL_EN_MASK			(0x7 << 0)
59 
60 #define CM_CLKMODE_DPLL_DPLL_EN_SHIFT		0
61 #define CM_CLKMODE_DPLL_DPLL_EN_MASK		7
62 
63 #define DPLL_EN_STOP			1
64 #define DPLL_EN_MN_BYPASS		4
65 #define DPLL_EN_LOW_POWER_BYPASS	5
66 #define DPLL_EN_LOCK			7
67 
68 /* CM_IDLEST_DPLL fields */
69 #define ST_DPLL_CLK_MASK		1
70 
71 /* CM_CLKSEL_DPLL */
72 #define CM_CLKSEL_DPLL_M_SHIFT			8
73 #define CM_CLKSEL_DPLL_M_MASK			(0x7FF << 8)
74 #define CM_CLKSEL_DPLL_N_SHIFT			0
75 #define CM_CLKSEL_DPLL_N_MASK			0x7F
76 
77 struct dpll_params {
78 	u32 m;
79 	u32 n;
80 	s8 m2;
81 	s8 m3;
82 	s8 m4;
83 	s8 m5;
84 	s8 m6;
85 };
86 
87 struct dpll_regs {
88 	u32 cm_clkmode_dpll;
89 	u32 cm_idlest_dpll;
90 	u32 cm_autoidle_dpll;
91 	u32 cm_clksel_dpll;
92 	u32 cm_div_m2_dpll;
93 	u32 cm_div_m3_dpll;
94 	u32 cm_div_m4_dpll;
95 	u32 cm_div_m5_dpll;
96 	u32 cm_div_m6_dpll;
97 };
98 
99 extern const struct dpll_regs dpll_mpu_regs;
100 extern const struct dpll_regs dpll_core_regs;
101 extern const struct dpll_regs dpll_per_regs;
102 extern const struct dpll_regs dpll_ddr_regs;
103 
104 extern struct cm_wkuppll *const cmwkup;
105 
106 const struct dpll_params *get_dpll_mpu_params(void);
107 const struct dpll_params *get_dpll_core_params(void);
108 const struct dpll_params *get_dpll_per_params(void);
109 const struct dpll_params *get_dpll_ddr_params(void);
110 void scale_vcores(void);
111 void do_setup_dpll(const struct dpll_regs *, const struct dpll_params *);
112 void prcm_init(void);
113 void enable_basic_clocks(void);
114 void do_enable_clocks(u32 *const *, u32 *const *, u8);
115 
116 #endif
117