arch/arm/mach-omap2/clockdomains2430_data.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * OMAP2xxx clockdomains
   4  *
   5  * Copyright (C) 2008-2009 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 OMAP2xxx 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
  39 #include "soc.h"
  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 /* 2430-specific possible wakeup dependencies */
  56
  57 /* 2430 PM_WKDEP_CORE: DSP, GFX, MPU, WKUP, MDM */
  58 static struct clkdm_dep core_2430_wkdeps[] = {
  59         { .clkdm_name = "dsp_clkdm" },
  60         { .clkdm_name = "gfx_clkdm" },
  61         { .clkdm_name = "mpu_clkdm" },
  62         { .clkdm_name = "wkup_clkdm" },
  63         { .clkdm_name = "mdm_clkdm" },
  64         { NULL },
  65 };
  66
  67 /* 2430 PM_WKDEP_MPU: CORE, DSP, WKUP, MDM */
  68 static struct clkdm_dep mpu_2430_wkdeps[] = {
  69         { .clkdm_name = "core_l3_clkdm" },
  70         { .clkdm_name = "core_l4_clkdm" },
  71         { .clkdm_name = "dsp_clkdm" },
  72         { .clkdm_name = "wkup_clkdm" },
  73         { .clkdm_name = "mdm_clkdm" },
  74         { NULL },
  75 };
  76
  77 /* 2430 PM_WKDEP_MDM: CORE, MPU, WKUP */
  78 static struct clkdm_dep mdm_2430_wkdeps[] = {
  79         { .clkdm_name = "core_l3_clkdm" },
  80         { .clkdm_name = "core_l4_clkdm" },
  81         { .clkdm_name = "mpu_clkdm" },
  82         { .clkdm_name = "wkup_clkdm" },
  83         { NULL },
  84 };
  85
  86 /*
  87  * 2430-only clockdomains
  88  */
  89
  90 static struct clockdomain mpu_2430_clkdm = {
  91         .name           = "mpu_clkdm",
  92         .pwrdm          = { .name = "mpu_pwrdm" },
  93         .flags          = CLKDM_CAN_HWSUP_SWSUP,
  94         .wkdep_srcs     = mpu_2430_wkdeps,
  95         .clktrctrl_mask = OMAP24XX_AUTOSTATE_MPU_MASK,
  96 };
  97
  98 /* Another case of bit name collisions between several registers: EN_MDM */
  99 static struct clockdomain mdm_clkdm = {
 100         .name           = "mdm_clkdm",
 101         .pwrdm          = { .name = "mdm_pwrdm" },
 102         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 103         .dep_bit        = OMAP2430_PM_WKDEP_MPU_EN_MDM_SHIFT,
 104         .wkdep_srcs     = mdm_2430_wkdeps,
 105         .clktrctrl_mask = OMAP2430_AUTOSTATE_MDM_MASK,
 106 };
 107
 108 static struct clockdomain dsp_2430_clkdm = {
 109         .name           = "dsp_clkdm",
 110         .pwrdm          = { .name = "dsp_pwrdm" },
 111         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 112         .dep_bit        = OMAP24XX_PM_WKDEP_MPU_EN_DSP_SHIFT,
 113         .wkdep_srcs     = dsp_24xx_wkdeps,
 114         .clktrctrl_mask = OMAP24XX_AUTOSTATE_DSP_MASK,
 115 };
 116
 117 static struct clockdomain gfx_2430_clkdm = {
 118         .name           = "gfx_clkdm",
 119         .pwrdm          = { .name = "gfx_pwrdm" },
 120         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 121         .wkdep_srcs     = gfx_24xx_wkdeps,
 122         .clktrctrl_mask = OMAP24XX_AUTOSTATE_GFX_MASK,
 123 };
 124
 125 /*
 126  * XXX add usecounting for clkdm dependencies, otherwise the presence
 127  * of a single dep bit for core_l3_24xx_clkdm and core_l4_24xx_clkdm
 128  * could cause trouble
 129  */
 130 static struct clockdomain core_l3_2430_clkdm = {
 131         .name           = "core_l3_clkdm",
 132         .pwrdm          = { .name = "core_pwrdm" },
 133         .flags          = CLKDM_CAN_HWSUP,
 134         .dep_bit        = OMAP24XX_EN_CORE_SHIFT,
 135         .wkdep_srcs     = core_2430_wkdeps,
 136         .clktrctrl_mask = OMAP24XX_AUTOSTATE_L3_MASK,
 137 };
 138
 139 /*
 140  * XXX add usecounting for clkdm dependencies, otherwise the presence
 141  * of a single dep bit for core_l3_24xx_clkdm and core_l4_24xx_clkdm
 142  * could cause trouble
 143  */
 144 static struct clockdomain core_l4_2430_clkdm = {
 145         .name           = "core_l4_clkdm",
 146         .pwrdm          = { .name = "core_pwrdm" },
 147         .flags          = CLKDM_CAN_HWSUP,
 148         .dep_bit        = OMAP24XX_EN_CORE_SHIFT,
 149         .wkdep_srcs     = core_2430_wkdeps,
 150         .clktrctrl_mask = OMAP24XX_AUTOSTATE_L4_MASK,
 151 };
 152
 153 static struct clockdomain dss_2430_clkdm = {
 154         .name           = "dss_clkdm",
 155         .pwrdm          = { .name = "core_pwrdm" },
 156         .flags          = CLKDM_CAN_HWSUP,
 157         .clktrctrl_mask = OMAP24XX_AUTOSTATE_DSS_MASK,
 158 };
 159
 160 static struct clockdomain *clockdomains_omap243x[] __initdata = {
 161         &wkup_common_clkdm,
 162         &mpu_2430_clkdm,
 163         &mdm_clkdm,
 164         &dsp_2430_clkdm,
 165         &gfx_2430_clkdm,
 166         &core_l3_2430_clkdm,
 167         &core_l4_2430_clkdm,
 168         &dss_2430_clkdm,
 169         NULL,
 170 };
 171
 172 void __init omap243x_clockdomains_init(void)
 173 {
 174         if (!cpu_is_omap243x())
 175                 return;
 176
 177         clkdm_register_platform_funcs(&omap2_clkdm_operations);
 178         clkdm_register_clkdms(clockdomains_omap243x);
 179         clkdm_complete_init();
 180 }
 181