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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
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2 | /* |
3 | * OMAP2420 clockdomains | |
4 | * | |
5 | * Copyright (C) 2008-2011 Texas Instruments, Inc. | |
6 | * Copyright (C) 2008-2010 Nokia Corporation | |
7 | * | |
8 | * Paul Walmsley, Jouni Högander | |
9 | * | |
10 | * This file contains clockdomains and clockdomain wakeup dependencies | |
11 | * for OMAP2420 chips. Some notes: | |
12 | * | |
13 | * A useful validation rule for struct clockdomain: Any clockdomain | |
14 | * referenced by a wkdep_srcs must have a dep_bit assigned. So | |
15 | * wkdep_srcs are really just software-controllable dependencies. | |
16 | * Non-software-controllable dependencies do exist, but they are not | |
17 | * encoded below (yet). | |
18 | * | |
19 | * 24xx does not support programmable sleep dependencies (SLEEPDEP) | |
20 | * | |
21 | * The overly-specific dep_bit names are due to a bit name collision | |
22 | * with CM_FCLKEN_{DSP,IVA2}. The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift | |
23 | * value are the same for all powerdomains: 2 | |
24 | * | |
25 | * XXX should dep_bit be a mask, so we can test to see if it is 0 as a | |
26 | * sanity check? | |
27 | * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE | |
28 | */ | |
29 | ||
30 | /* | |
31 | * To-Do List | |
32 | * -> Port the Sleep/Wakeup dependencies for the domains | |
33 | * from the Power domain framework | |
34 | */ | |
35 | ||
36 | #include <linux/kernel.h> | |
37 | #include <linux/io.h> | |
38 | ||
e4c060db | 39 | #include "soc.h" |
a5ffef6a PW |
40 | #include "clockdomain.h" |
41 | #include "prm2xxx_3xxx.h" | |
42 | #include "cm2xxx_3xxx.h" | |
43 | #include "cm-regbits-24xx.h" | |
44 | #include "prm-regbits-24xx.h" | |
45 | ||
46 | /* | |
47 | * Clockdomain dependencies for wkdeps | |
48 | * | |
49 | * XXX Hardware dependencies (e.g., dependencies that cannot be | |
50 | * changed in software) are not included here yet, but should be. | |
51 | */ | |
52 | ||
53 | /* Wakeup dependency source arrays */ | |
54 | ||
55 | /* 2420-specific possible wakeup dependencies */ | |
56 | ||
57 | /* 2420 PM_WKDEP_MPU: CORE, DSP, WKUP */ | |
58 | static struct clkdm_dep mpu_2420_wkdeps[] = { | |
59 | { .clkdm_name = "core_l3_clkdm" }, | |
60 | { .clkdm_name = "core_l4_clkdm" }, | |
61 | { .clkdm_name = "dsp_clkdm" }, | |
62 | { .clkdm_name = "wkup_clkdm" }, | |
63 | { NULL }, | |
64 | }; | |
65 | ||
66 | /* 2420 PM_WKDEP_CORE: DSP, GFX, MPU, WKUP */ | |
67 | static struct clkdm_dep core_2420_wkdeps[] = { | |
68 | { .clkdm_name = "dsp_clkdm" }, | |
69 | { .clkdm_name = "gfx_clkdm" }, | |
70 | { .clkdm_name = "mpu_clkdm" }, | |
71 | { .clkdm_name = "wkup_clkdm" }, | |
72 | { NULL }, | |
73 | }; | |
74 | ||
75 | /* | |
76 | * 2420-only clockdomains | |
77 | */ | |
78 | ||
79 | static struct clockdomain mpu_2420_clkdm = { | |
80 | .name = "mpu_clkdm", | |
81 | .pwrdm = { .name = "mpu_pwrdm" }, | |
82 | .flags = CLKDM_CAN_HWSUP, | |
83 | .wkdep_srcs = mpu_2420_wkdeps, | |
84 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_MPU_MASK, | |
85 | }; | |
86 | ||
87 | static struct clockdomain iva1_2420_clkdm = { | |
88 | .name = "iva1_clkdm", | |
89 | .pwrdm = { .name = "dsp_pwrdm" }, | |
90 | .flags = CLKDM_CAN_HWSUP_SWSUP, | |
91 | .dep_bit = OMAP24XX_PM_WKDEP_MPU_EN_DSP_SHIFT, | |
92 | .wkdep_srcs = dsp_24xx_wkdeps, | |
93 | .clktrctrl_mask = OMAP2420_AUTOSTATE_IVA_MASK, | |
94 | }; | |
95 | ||
96 | static struct clockdomain dsp_2420_clkdm = { | |
97 | .name = "dsp_clkdm", | |
98 | .pwrdm = { .name = "dsp_pwrdm" }, | |
99 | .flags = CLKDM_CAN_HWSUP_SWSUP, | |
100 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_DSP_MASK, | |
101 | }; | |
102 | ||
103 | static struct clockdomain gfx_2420_clkdm = { | |
104 | .name = "gfx_clkdm", | |
105 | .pwrdm = { .name = "gfx_pwrdm" }, | |
106 | .flags = CLKDM_CAN_HWSUP_SWSUP, | |
107 | .wkdep_srcs = gfx_24xx_wkdeps, | |
108 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_GFX_MASK, | |
109 | }; | |
110 | ||
111 | static struct clockdomain core_l3_2420_clkdm = { | |
112 | .name = "core_l3_clkdm", | |
113 | .pwrdm = { .name = "core_pwrdm" }, | |
114 | .flags = CLKDM_CAN_HWSUP, | |
115 | .wkdep_srcs = core_2420_wkdeps, | |
116 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_L3_MASK, | |
117 | }; | |
118 | ||
119 | static struct clockdomain core_l4_2420_clkdm = { | |
120 | .name = "core_l4_clkdm", | |
121 | .pwrdm = { .name = "core_pwrdm" }, | |
122 | .flags = CLKDM_CAN_HWSUP, | |
123 | .wkdep_srcs = core_2420_wkdeps, | |
124 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_L4_MASK, | |
125 | }; | |
126 | ||
127 | static struct clockdomain dss_2420_clkdm = { | |
128 | .name = "dss_clkdm", | |
129 | .pwrdm = { .name = "core_pwrdm" }, | |
130 | .flags = CLKDM_CAN_HWSUP, | |
131 | .clktrctrl_mask = OMAP24XX_AUTOSTATE_DSS_MASK, | |
132 | }; | |
133 | ||
134 | static struct clockdomain *clockdomains_omap242x[] __initdata = { | |
135 | &wkup_common_clkdm, | |
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136 | &mpu_2420_clkdm, |
137 | &iva1_2420_clkdm, | |
138 | &dsp_2420_clkdm, | |
139 | &gfx_2420_clkdm, | |
140 | &core_l3_2420_clkdm, | |
141 | &core_l4_2420_clkdm, | |
142 | &dss_2420_clkdm, | |
143 | NULL, | |
144 | }; | |
145 | ||
146 | void __init omap242x_clockdomains_init(void) | |
147 | { | |
148 | if (!cpu_is_omap242x()) | |
149 | return; | |
150 | ||
151 | clkdm_register_platform_funcs(&omap2_clkdm_operations); | |
152 | clkdm_register_clkdms(clockdomains_omap242x); | |
153 | clkdm_complete_init(); | |
154 | } |