1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * OMAP2/3 clockdomain common data |
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/sleep |
11 | * dependencies for the OMAP2/3 chips. Some notes: |
12 | * |
13 | * A useful validation rule for struct clockdomain: Any clockdomain |
14 | * referenced by a wkdep_srcs or sleepdep_srcs array must have a |
15 | * dep_bit assigned. So wkdep_srcs/sleepdep_srcs are really just |
16 | * software-controllable dependencies. Non-software-controllable |
17 | * dependencies do exist, but they are not 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 | |
39 | #include "clockdomain.h" |
40 | #include "prm2xxx_3xxx.h" |
41 | #include "cm2xxx_3xxx.h" |
42 | #include "cm-regbits-24xx.h" |
43 | #include "cm-regbits-34xx.h" |
44 | #include "cm-regbits-44xx.h" |
45 | #include "prm-regbits-24xx.h" |
46 | #include "prm-regbits-34xx.h" |
47 | |
48 | /* |
49 | * Clockdomain dependencies for wkdeps/sleepdeps |
50 | * |
51 | * XXX Hardware dependencies (e.g., dependencies that cannot be |
52 | * changed in software) are not included here yet, but should be. |
53 | */ |
54 | |
55 | /* Wakeup dependency source arrays */ |
56 | |
57 | /* 2xxx-specific possible dependencies */ |
58 | |
59 | /* 2xxx PM_WKDEP_GFX: CORE, MPU, WKUP */ |
60 | struct clkdm_dep gfx_24xx_wkdeps[] = { |
61 | { .clkdm_name = "core_l3_clkdm" }, |
62 | { .clkdm_name = "core_l4_clkdm" }, |
63 | { .clkdm_name = "mpu_clkdm" }, |
64 | { .clkdm_name = "wkup_clkdm" }, |
65 | { NULL }, |
66 | }; |
67 | |
68 | /* 2xxx PM_WKDEP_DSP: CORE, MPU, WKUP */ |
69 | struct clkdm_dep dsp_24xx_wkdeps[] = { |
70 | { .clkdm_name = "core_l3_clkdm" }, |
71 | { .clkdm_name = "core_l4_clkdm" }, |
72 | { .clkdm_name = "mpu_clkdm" }, |
73 | { .clkdm_name = "wkup_clkdm" }, |
74 | { NULL }, |
75 | }; |
76 | |
77 | |
78 | /* |
79 | * OMAP2/3-common clockdomains |
80 | * |
81 | * Even though the 2420 has a single PRCM module from the |
82 | * interconnect's perspective, internally it does appear to have |
83 | * separate PRM and CM clockdomains. The usual test case is |
84 | * sys_clkout/sys_clkout2. |
85 | */ |
86 | |
87 | /* This is an implicit clockdomain - it is never defined as such in TRM */ |
88 | struct clockdomain wkup_common_clkdm = { |
89 | .name = "wkup_clkdm" , |
90 | .pwrdm = { .name = "wkup_pwrdm" }, |
91 | .dep_bit = OMAP_EN_WKUP_SHIFT, |
92 | .flags = CLKDM_ACTIVE_WITH_MPU, |
93 | }; |
94 | |