arch/arm/mach-omap2/clockdomains2xxx_3xxx_data.c

   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 };