b71c72178e
The idle status of the IP blocks and clocks inside the EMU clockdomain isn't taken into account by the PRCM hardware when deciding whether the clockdomain is idle. Add a workaround flag in the clockdomain code, CLKDM_MISSING_IDLE_REPORTING, to deal with this problem, and add the code necessary to support it. If CLKDM_MISSING_IDLE_REPORTING is set on a clockdomain, the clockdomain will be forced active whenever an IP block inside that clockdomain is in use, even if the clockdomain supports hardware-supervised idle. When the kernel indicates that the last active IP block inside the clockdomain is no longer used, the clockdomain will be forced idle, or, if that mode is not supported in the hardware, it will be placed into hardware-supervised idle. This patch is an equal collaboration with Jon Hunter <jon-hunter@ti.com>. Ming Lei <ming.lei@canonical.com>, Will Deacon <will.deacon@arm.com>, Madhav Vij <mvij@ti.com>, Kevin Hilman <khilman@ti.com>, Benoît Cousson <b-cousson@ti.com>, and Santosh Shilimkar <santosh.shilimkar@ti.com> all made essential contributions to the understanding of EMU clockdomain power management on OMAP. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Jon Hunter <jon-hunter@ti.com> Cc: Ming Lei <ming.lei@canonical.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Madhav Vij <mvij@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Benoît Cousson <b-cousson@ti.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Tested-by: Jon Hunter <jon-hunter@ti.com>
444 lines
14 KiB
C
444 lines
14 KiB
C
/*
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* OMAP4 Clock domains framework
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*
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* Copyright (C) 2009-2011 Texas Instruments, Inc.
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* Copyright (C) 2009-2011 Nokia Corporation
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*
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* Abhijit Pagare (abhijitpagare@ti.com)
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* Benoit Cousson (b-cousson@ti.com)
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* Paul Walmsley (paul@pwsan.com)
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*
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* This file is automatically generated from the OMAP hardware databases.
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* We respectfully ask that any modifications to this file be coordinated
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* with the public linux-omap@vger.kernel.org mailing list and the
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* authors above to ensure that the autogeneration scripts are kept
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* up-to-date with the file contents.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/io.h>
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#include "clockdomain.h"
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#include "cm1_44xx.h"
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#include "cm2_44xx.h"
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#include "cm-regbits-44xx.h"
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#include "prm44xx.h"
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#include "prcm44xx.h"
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#include "prcm_mpu44xx.h"
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/* Static Dependencies for OMAP4 Clock Domains */
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static struct clkdm_dep d2d_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_2_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l3_init_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep ducati_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_2_clkdm" },
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{ .clkdm_name = "l3_dss_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l3_gfx_clkdm" },
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{ .clkdm_name = "l3_init_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ .clkdm_name = "l4_secure_clkdm" },
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{ .clkdm_name = "l4_wkup_clkdm" },
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{ .clkdm_name = "tesla_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep iss_wkup_sleep_deps[] = {
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep ivahd_wkup_sleep_deps[] = {
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep l3_dma_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ducati_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_dss_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l3_init_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ .clkdm_name = "l4_secure_clkdm" },
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{ .clkdm_name = "l4_wkup_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep l3_dss_wkup_sleep_deps[] = {
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_2_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep l3_gfx_wkup_sleep_deps[] = {
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep l3_init_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ .clkdm_name = "l4_secure_clkdm" },
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{ .clkdm_name = "l4_wkup_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep l4_secure_wkup_sleep_deps[] = {
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep mpu_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ducati_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_2_clkdm" },
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{ .clkdm_name = "l3_dss_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l3_gfx_clkdm" },
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{ .clkdm_name = "l3_init_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ .clkdm_name = "l4_secure_clkdm" },
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{ .clkdm_name = "l4_wkup_clkdm" },
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{ .clkdm_name = "tesla_clkdm" },
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{ NULL },
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};
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static struct clkdm_dep tesla_wkup_sleep_deps[] = {
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{ .clkdm_name = "abe_clkdm" },
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{ .clkdm_name = "ivahd_clkdm" },
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{ .clkdm_name = "l3_1_clkdm" },
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{ .clkdm_name = "l3_2_clkdm" },
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{ .clkdm_name = "l3_emif_clkdm" },
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{ .clkdm_name = "l3_init_clkdm" },
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{ .clkdm_name = "l4_cfg_clkdm" },
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{ .clkdm_name = "l4_per_clkdm" },
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{ .clkdm_name = "l4_wkup_clkdm" },
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{ NULL },
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};
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static struct clockdomain l4_cefuse_44xx_clkdm = {
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.name = "l4_cefuse_clkdm",
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.pwrdm = { .name = "cefuse_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CEFUSE_INST,
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.clkdm_offs = OMAP4430_CM2_CEFUSE_CEFUSE_CDOFFS,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain l4_cfg_44xx_clkdm = {
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.name = "l4_cfg_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_L4CFG_CDOFFS,
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.dep_bit = OMAP4430_L4CFG_STATDEP_SHIFT,
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.flags = CLKDM_CAN_HWSUP,
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};
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static struct clockdomain tesla_44xx_clkdm = {
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.name = "tesla_clkdm",
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.pwrdm = { .name = "tesla_pwrdm" },
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.prcm_partition = OMAP4430_CM1_PARTITION,
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.cm_inst = OMAP4430_CM1_TESLA_INST,
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.clkdm_offs = OMAP4430_CM1_TESLA_TESLA_CDOFFS,
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.dep_bit = OMAP4430_TESLA_STATDEP_SHIFT,
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.wkdep_srcs = tesla_wkup_sleep_deps,
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.sleepdep_srcs = tesla_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain l3_gfx_44xx_clkdm = {
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.name = "l3_gfx_clkdm",
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.pwrdm = { .name = "gfx_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_GFX_INST,
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.clkdm_offs = OMAP4430_CM2_GFX_GFX_CDOFFS,
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.dep_bit = OMAP4430_GFX_STATDEP_SHIFT,
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.wkdep_srcs = l3_gfx_wkup_sleep_deps,
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.sleepdep_srcs = l3_gfx_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain ivahd_44xx_clkdm = {
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.name = "ivahd_clkdm",
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.pwrdm = { .name = "ivahd_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_IVAHD_INST,
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.clkdm_offs = OMAP4430_CM2_IVAHD_IVAHD_CDOFFS,
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.dep_bit = OMAP4430_IVAHD_STATDEP_SHIFT,
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.wkdep_srcs = ivahd_wkup_sleep_deps,
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.sleepdep_srcs = ivahd_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain l4_secure_44xx_clkdm = {
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.name = "l4_secure_clkdm",
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.pwrdm = { .name = "l4per_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_L4PER_INST,
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.clkdm_offs = OMAP4430_CM2_L4PER_L4SEC_CDOFFS,
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.dep_bit = OMAP4430_L4SEC_STATDEP_SHIFT,
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.wkdep_srcs = l4_secure_wkup_sleep_deps,
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.sleepdep_srcs = l4_secure_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain l4_per_44xx_clkdm = {
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.name = "l4_per_clkdm",
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.pwrdm = { .name = "l4per_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_L4PER_INST,
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.clkdm_offs = OMAP4430_CM2_L4PER_L4PER_CDOFFS,
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.dep_bit = OMAP4430_L4PER_STATDEP_SHIFT,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain abe_44xx_clkdm = {
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.name = "abe_clkdm",
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.pwrdm = { .name = "abe_pwrdm" },
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.prcm_partition = OMAP4430_CM1_PARTITION,
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.cm_inst = OMAP4430_CM1_ABE_INST,
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.clkdm_offs = OMAP4430_CM1_ABE_ABE_CDOFFS,
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.dep_bit = OMAP4430_ABE_STATDEP_SHIFT,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain l3_instr_44xx_clkdm = {
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.name = "l3_instr_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_L3INSTR_CDOFFS,
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};
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static struct clockdomain l3_init_44xx_clkdm = {
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.name = "l3_init_clkdm",
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.pwrdm = { .name = "l3init_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_L3INIT_INST,
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.clkdm_offs = OMAP4430_CM2_L3INIT_L3INIT_CDOFFS,
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.dep_bit = OMAP4430_L3INIT_STATDEP_SHIFT,
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.wkdep_srcs = l3_init_wkup_sleep_deps,
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.sleepdep_srcs = l3_init_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain d2d_44xx_clkdm = {
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.name = "d2d_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_D2D_CDOFFS,
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.wkdep_srcs = d2d_wkup_sleep_deps,
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.sleepdep_srcs = d2d_wkup_sleep_deps,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain mpu0_44xx_clkdm = {
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.name = "mpu0_clkdm",
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.pwrdm = { .name = "cpu0_pwrdm" },
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.prcm_partition = OMAP4430_PRCM_MPU_PARTITION,
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.cm_inst = OMAP4430_PRCM_MPU_CPU0_INST,
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.clkdm_offs = OMAP4430_PRCM_MPU_CPU0_CPU0_CDOFFS,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain mpu1_44xx_clkdm = {
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.name = "mpu1_clkdm",
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.pwrdm = { .name = "cpu1_pwrdm" },
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.prcm_partition = OMAP4430_PRCM_MPU_PARTITION,
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.cm_inst = OMAP4430_PRCM_MPU_CPU1_INST,
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.clkdm_offs = OMAP4430_PRCM_MPU_CPU1_CPU1_CDOFFS,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain l3_emif_44xx_clkdm = {
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.name = "l3_emif_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_MEMIF_CDOFFS,
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.dep_bit = OMAP4430_MEMIF_STATDEP_SHIFT,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain l4_ao_44xx_clkdm = {
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.name = "l4_ao_clkdm",
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.pwrdm = { .name = "always_on_core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_ALWAYS_ON_INST,
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.clkdm_offs = OMAP4430_CM2_ALWAYS_ON_ALWON_CDOFFS,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain ducati_44xx_clkdm = {
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.name = "ducati_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_DUCATI_CDOFFS,
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.dep_bit = OMAP4430_DUCATI_STATDEP_SHIFT,
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.wkdep_srcs = ducati_wkup_sleep_deps,
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.sleepdep_srcs = ducati_wkup_sleep_deps,
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.flags = CLKDM_CAN_HWSUP_SWSUP,
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};
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static struct clockdomain mpu_44xx_clkdm = {
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.name = "mpuss_clkdm",
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.pwrdm = { .name = "mpu_pwrdm" },
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.prcm_partition = OMAP4430_CM1_PARTITION,
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.cm_inst = OMAP4430_CM1_MPU_INST,
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.clkdm_offs = OMAP4430_CM1_MPU_MPU_CDOFFS,
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.wkdep_srcs = mpu_wkup_sleep_deps,
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.sleepdep_srcs = mpu_wkup_sleep_deps,
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.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
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};
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static struct clockdomain l3_2_44xx_clkdm = {
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.name = "l3_2_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_L3_2_CDOFFS,
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.dep_bit = OMAP4430_L3_2_STATDEP_SHIFT,
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.flags = CLKDM_CAN_HWSUP,
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};
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static struct clockdomain l3_1_44xx_clkdm = {
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.name = "l3_1_clkdm",
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.pwrdm = { .name = "core_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CORE_INST,
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.clkdm_offs = OMAP4430_CM2_CORE_L3_1_CDOFFS,
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.dep_bit = OMAP4430_L3_1_STATDEP_SHIFT,
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.flags = CLKDM_CAN_HWSUP,
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};
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static struct clockdomain iss_44xx_clkdm = {
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.name = "iss_clkdm",
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.pwrdm = { .name = "cam_pwrdm" },
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.prcm_partition = OMAP4430_CM2_PARTITION,
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.cm_inst = OMAP4430_CM2_CAM_INST,
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.clkdm_offs = OMAP4430_CM2_CAM_CAM_CDOFFS,
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.wkdep_srcs = iss_wkup_sleep_deps,
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.sleepdep_srcs = iss_wkup_sleep_deps,
|
|
.flags = CLKDM_CAN_HWSUP_SWSUP,
|
|
};
|
|
|
|
static struct clockdomain l3_dss_44xx_clkdm = {
|
|
.name = "l3_dss_clkdm",
|
|
.pwrdm = { .name = "dss_pwrdm" },
|
|
.prcm_partition = OMAP4430_CM2_PARTITION,
|
|
.cm_inst = OMAP4430_CM2_DSS_INST,
|
|
.clkdm_offs = OMAP4430_CM2_DSS_DSS_CDOFFS,
|
|
.dep_bit = OMAP4430_DSS_STATDEP_SHIFT,
|
|
.wkdep_srcs = l3_dss_wkup_sleep_deps,
|
|
.sleepdep_srcs = l3_dss_wkup_sleep_deps,
|
|
.flags = CLKDM_CAN_HWSUP_SWSUP,
|
|
};
|
|
|
|
static struct clockdomain l4_wkup_44xx_clkdm = {
|
|
.name = "l4_wkup_clkdm",
|
|
.pwrdm = { .name = "wkup_pwrdm" },
|
|
.prcm_partition = OMAP4430_PRM_PARTITION,
|
|
.cm_inst = OMAP4430_PRM_WKUP_CM_INST,
|
|
.clkdm_offs = OMAP4430_PRM_WKUP_CM_WKUP_CDOFFS,
|
|
.dep_bit = OMAP4430_L4WKUP_STATDEP_SHIFT,
|
|
.flags = CLKDM_CAN_HWSUP | CLKDM_ACTIVE_WITH_MPU,
|
|
};
|
|
|
|
static struct clockdomain emu_sys_44xx_clkdm = {
|
|
.name = "emu_sys_clkdm",
|
|
.pwrdm = { .name = "emu_pwrdm" },
|
|
.prcm_partition = OMAP4430_PRM_PARTITION,
|
|
.cm_inst = OMAP4430_PRM_EMU_CM_INST,
|
|
.clkdm_offs = OMAP4430_PRM_EMU_CM_EMU_CDOFFS,
|
|
.flags = (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_FORCE_WAKEUP |
|
|
CLKDM_MISSING_IDLE_REPORTING),
|
|
};
|
|
|
|
static struct clockdomain l3_dma_44xx_clkdm = {
|
|
.name = "l3_dma_clkdm",
|
|
.pwrdm = { .name = "core_pwrdm" },
|
|
.prcm_partition = OMAP4430_CM2_PARTITION,
|
|
.cm_inst = OMAP4430_CM2_CORE_INST,
|
|
.clkdm_offs = OMAP4430_CM2_CORE_SDMA_CDOFFS,
|
|
.wkdep_srcs = l3_dma_wkup_sleep_deps,
|
|
.sleepdep_srcs = l3_dma_wkup_sleep_deps,
|
|
.flags = CLKDM_CAN_FORCE_WAKEUP | CLKDM_CAN_HWSUP,
|
|
};
|
|
|
|
/* As clockdomains are added or removed above, this list must also be changed */
|
|
static struct clockdomain *clockdomains_omap44xx[] __initdata = {
|
|
&l4_cefuse_44xx_clkdm,
|
|
&l4_cfg_44xx_clkdm,
|
|
&tesla_44xx_clkdm,
|
|
&l3_gfx_44xx_clkdm,
|
|
&ivahd_44xx_clkdm,
|
|
&l4_secure_44xx_clkdm,
|
|
&l4_per_44xx_clkdm,
|
|
&abe_44xx_clkdm,
|
|
&l3_instr_44xx_clkdm,
|
|
&l3_init_44xx_clkdm,
|
|
&d2d_44xx_clkdm,
|
|
&mpu0_44xx_clkdm,
|
|
&mpu1_44xx_clkdm,
|
|
&l3_emif_44xx_clkdm,
|
|
&l4_ao_44xx_clkdm,
|
|
&ducati_44xx_clkdm,
|
|
&mpu_44xx_clkdm,
|
|
&l3_2_44xx_clkdm,
|
|
&l3_1_44xx_clkdm,
|
|
&iss_44xx_clkdm,
|
|
&l3_dss_44xx_clkdm,
|
|
&l4_wkup_44xx_clkdm,
|
|
&emu_sys_44xx_clkdm,
|
|
&l3_dma_44xx_clkdm,
|
|
NULL
|
|
};
|
|
|
|
|
|
void __init omap44xx_clockdomains_init(void)
|
|
{
|
|
clkdm_register_platform_funcs(&omap4_clkdm_operations);
|
|
clkdm_register_clkdms(clockdomains_omap44xx);
|
|
clkdm_complete_init();
|
|
}
|