arm/mach-omap2/clockdomains2xxx_3xxx_data.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * OMAP2/3 clockdomain common data
0004  *
0005  * Copyright (C) 2008-2011 Texas Instruments, Inc.
0006  * Copyright (C) 2008-2010 Nokia Corporation
0007  *
0008  * Paul Walmsley, Jouni Högander
0009  *
0010  * This file contains clockdomains and clockdomain wakeup/sleep
0011  * dependencies for the OMAP2/3 chips.  Some notes:
0012  *
0013  * A useful validation rule for struct clockdomain: Any clockdomain
0014  * referenced by a wkdep_srcs or sleepdep_srcs array must have a
0015  * dep_bit assigned.  So wkdep_srcs/sleepdep_srcs are really just
0016  * software-controllable dependencies.  Non-software-controllable
0017  * dependencies do exist, but they are not encoded below (yet).
0018  *
0019  * 24xx does not support programmable sleep dependencies (SLEEPDEP)
0020  *
0021  * The overly-specific dep_bit names are due to a bit name collision
0022  * with CM_FCLKEN_{DSP,IVA2}.  The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift
0023  * value are the same for all powerdomains: 2
0024  *
0025  * XXX should dep_bit be a mask, so we can test to see if it is 0 as a
0026  * sanity check?
0027  * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE
0028  */
0029
0030 /*
0031  * To-Do List
0032  * -> Port the Sleep/Wakeup dependencies for the domains
0033  *    from the Power domain framework
0034  */
0035
0036 #include <linux/kernel.h>
0037 #include <linux/io.h>
0038
0039 #include "clockdomain.h"
0040 #include "prm2xxx_3xxx.h"
0041 #include "cm2xxx_3xxx.h"
0042 #include "cm-regbits-24xx.h"
0043 #include "cm-regbits-34xx.h"
0044 #include "cm-regbits-44xx.h"
0045 #include "prm-regbits-24xx.h"
0046 #include "prm-regbits-34xx.h"
0047
0048 /*
0049  * Clockdomain dependencies for wkdeps/sleepdeps
0050  *
0051  * XXX Hardware dependencies (e.g., dependencies that cannot be
0052  * changed in software) are not included here yet, but should be.
0053  */
0054
0055 /* Wakeup dependency source arrays */
0056
0057 /* 2xxx-specific possible dependencies */
0058
0059 /* 2xxx PM_WKDEP_GFX: CORE, MPU, WKUP */
0060 struct clkdm_dep gfx_24xx_wkdeps[] = {
0061     { .clkdm_name = "core_l3_clkdm" },
0062     { .clkdm_name = "core_l4_clkdm" },
0063     { .clkdm_name = "mpu_clkdm" },
0064     { .clkdm_name = "wkup_clkdm" },
0065     { NULL },
0066 };
0067
0068 /* 2xxx PM_WKDEP_DSP: CORE, MPU, WKUP */
0069 struct clkdm_dep dsp_24xx_wkdeps[] = {
0070     { .clkdm_name = "core_l3_clkdm" },
0071     { .clkdm_name = "core_l4_clkdm" },
0072     { .clkdm_name = "mpu_clkdm" },
0073     { .clkdm_name = "wkup_clkdm" },
0074     { NULL },
0075 };
0076
0077
0078 /*
0079  * OMAP2/3-common clockdomains
0080  *
0081  * Even though the 2420 has a single PRCM module from the
0082  * interconnect's perspective, internally it does appear to have
0083  * separate PRM and CM clockdomains.  The usual test case is
0084  * sys_clkout/sys_clkout2.
0085  */
0086
0087 /* This is an implicit clockdomain - it is never defined as such in TRM */
0088 struct clockdomain wkup_common_clkdm = {
0089     .name       = "wkup_clkdm",
0090     .pwrdm      = { .name = "wkup_pwrdm" },
0091     .dep_bit    = OMAP_EN_WKUP_SHIFT,
0092     .flags      = CLKDM_ACTIVE_WITH_MPU,
0093 };