1 /*
2  * OMAP2/3 clockdomain common data
3  *
4  * Copyright (C) 2008-2011 Texas Instruments, Inc.
5  * Copyright (C) 2008-2010 Nokia Corporation
6  *
7  * Paul Walmsley, Jouni Högander
8  *
9  * This file contains clockdomains and clockdomain wakeup/sleep
10  * dependencies for the OMAP2/3 chips.  Some notes:
11  *
12  * A useful validation rule for struct clockdomain: Any clockdomain
13  * referenced by a wkdep_srcs or sleepdep_srcs array must have a
14  * dep_bit assigned.  So wkdep_srcs/sleepdep_srcs are really just
15  * software-controllable dependencies.  Non-software-controllable
16  * dependencies do exist, but they are not encoded below (yet).
17  *
18  * 24xx does not support programmable sleep dependencies (SLEEPDEP)
19  *
20  * The overly-specific dep_bit names are due to a bit name collision
21  * with CM_FCLKEN_{DSP,IVA2}.  The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift
22  * value are the same for all powerdomains: 2
23  *
24  * XXX should dep_bit be a mask, so we can test to see if it is 0 as a
25  * sanity check?
26  * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE
27  */
28 
29 /*
30  * To-Do List
31  * -> Port the Sleep/Wakeup dependencies for the domains
32  *    from the Power domain framework
33  */
34 
35 #include <linux/kernel.h>
36 #include <linux/io.h>
37 
38 #include "clockdomain.h"
39 #include "prm2xxx_3xxx.h"
40 #include "cm2xxx_3xxx.h"
41 #include "cm-regbits-24xx.h"
42 #include "cm-regbits-34xx.h"
43 #include "cm-regbits-44xx.h"
44 #include "prm-regbits-24xx.h"
45 #include "prm-regbits-34xx.h"
46 
47 /*
48  * Clockdomain dependencies for wkdeps/sleepdeps
49  *
50  * XXX Hardware dependencies (e.g., dependencies that cannot be
51  * changed in software) are not included here yet, but should be.
52  */
53 
54 /* Wakeup dependency source arrays */
55 
56 /* 2xxx-specific possible dependencies */
57 
58 /* 2xxx PM_WKDEP_GFX: CORE, MPU, WKUP */
59 struct clkdm_dep gfx_24xx_wkdeps[] = {
60 	{ .clkdm_name = "core_l3_clkdm" },
61 	{ .clkdm_name = "core_l4_clkdm" },
62 	{ .clkdm_name = "mpu_clkdm" },
63 	{ .clkdm_name = "wkup_clkdm" },
64 	{ NULL },
65 };
66 
67 /* 2xxx PM_WKDEP_DSP: CORE, MPU, WKUP */
68 struct clkdm_dep dsp_24xx_wkdeps[] = {
69 	{ .clkdm_name = "core_l3_clkdm" },
70 	{ .clkdm_name = "core_l4_clkdm" },
71 	{ .clkdm_name = "mpu_clkdm" },
72 	{ .clkdm_name = "wkup_clkdm" },
73 	{ NULL },
74 };
75 
76 
77 /*
78  * OMAP2/3-common clockdomains
79  *
80  * Even though the 2420 has a single PRCM module from the
81  * interconnect's perspective, internally it does appear to have
82  * separate PRM and CM clockdomains.  The usual test case is
83  * sys_clkout/sys_clkout2.
84  */
85 
86 /* This is an implicit clockdomain - it is never defined as such in TRM */
87 struct clockdomain wkup_common_clkdm = {
88 	.name		= "wkup_clkdm",
89 	.pwrdm		= { .name = "wkup_pwrdm" },
90 	.dep_bit	= OMAP_EN_WKUP_SHIFT,
91 	.flags		= CLKDM_ACTIVE_WITH_MPU,
92 };
93