Merge tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

ti-sysc driver related changes for omap variants

This series improves the ti-sysc interconnect target module driver to
the point where a most of SoC can be booted with interconnect target
module data configured in device tree instead of legacy platform data.
The related device tree changes need some more work though, and can
wait for v4.19. Also some drivers using nested interconnects like DSS
need more work.

We can now remove the unused pm-noop code that is not doing anything
any longer. And we can now initialize things for PM and display pdata
later to prepare things for using ti-sysc driver.

We also need to add  some more quirk handling so we can boot both with
platform data and dts data.

* tag 'omap-for-v4.18/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  bus: ti-sysc: Show module information for suspend if DEBUG is enabled
  bus: ti-sysc: Tag sdio and wdt with legacy mode for suspend
  bus: ti-sysc: Detect UARTs for SYSC_QUIRK_LEGACY_IDLE quirk on omap4
  bus: ti-sysc: Detect omap4 type timers for quirk
  bus: ti-sysc: Add initial support for external resets
  bus: ti-sysc: Improve suspend and resume handling
  bus: ti-sysc: Tag some modules resource providers for noirq suspend
  bus: ti-sysc: Add handling for clkctrl opt clocks
  bus: ti-sysc: Make child clock alias handling more generic
  bus: ti-sysc: Handle simple-bus for nested children
  ARM: OMAP2+: Make display related init into device_initcall
  ARM: OMAP2+: Initialize SoC PM later
  ARM: OMAP2+: Only probe SDMA via ti-sysc if configured in dts
  ARM: OMAP2+: Use signed value for sysc register offsets
  ARM: OMAP2+: Allow using ti-sysc for system timers
  ARM: OMAP2+: Drop unused pm-noop

Signed-off-by: Olof Johansson <olof@lixom.net>

24 files changed, 140 insertions, 482 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 0d9ce58..01377c2 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -78,7 +78,6 @@ endif
 omap-4-5-pm-common			= omap-mpuss-lowpower.o
 obj-$(CONFIG_ARCH_OMAP4)		+= $(omap-4-5-pm-common)
 obj-$(CONFIG_SOC_OMAP5)			+= $(omap-4-5-pm-common)
-obj-$(CONFIG_OMAP_PM_NOOP)		+= omap-pm-noop.o
 
 ifeq ($(CONFIG_PM),y)
 obj-$(CONFIG_ARCH_OMAP2)		+= pm24xx.o
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 6c61ecc..6b4f497 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -31,8 +31,6 @@ static const struct of_device_id omap_dt_match_table[] __initconst = {
 static void __init __maybe_unused omap_generic_init(void)
 {
 	pdata_quirks_init(omap_dt_match_table);
-
-	omapdss_init_of();
 	omap_soc_device_init();
 }
 
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index fbe0b78..dff3750 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -44,6 +44,9 @@
 
 #define OMAP_INTC_START		NR_IRQS
 
+extern int (*omap_pm_soc_init)(void);
+int omap_pm_nop_init(void);
+
 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP2)
 int omap2_pm_init(void);
 #else
@@ -79,9 +82,12 @@ static inline int omap4_pm_init_early(void)
 
 #if defined(CONFIG_PM) && (defined(CONFIG_SOC_AM33XX) || \
 	defined(CONFIG_SOC_AM43XX))
-void amx3_common_pm_init(void);
+int amx3_common_pm_init(void);
 #else
-static inline void amx3_common_pm_init(void) { }
+static inline int amx3_common_pm_init(void)
+{
+	return 0;
+}
 #endif
 
 extern void omap2_init_common_infrastructure(void);
@@ -122,14 +128,10 @@ void am43xx_init_early(void);
 void am43xx_init_late(void);
 void omap4430_init_early(void);
 void omap5_init_early(void);
-void omap3_init_late(void);	/* Do not use this one */
+void omap3_init_late(void);
 void omap4430_init_late(void);
 void omap2420_init_late(void);
 void omap2430_init_late(void);
-void omap3430_init_late(void);
-void omap35xx_init_late(void);
-void omap3630_init_late(void);
-void am35xx_init_late(void);
 void ti81xx_init_late(void);
 void am33xx_init_late(void);
 void omap5_init_late(void);
@@ -350,7 +352,5 @@ extern int omap_dss_reset(struct omap_hwmod *);
 /* SoC specific clock initializer */
 int omap_clk_init(void);
 
-int __init omapdss_init_of(void);
-
 #endif /* __ASSEMBLER__ */
 #endif /* __ARCH_ARM_MACH_OMAP2PLUS_COMMON_H */
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index b3f6eb5..9500b6e 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -32,7 +32,6 @@
 #include <linux/platform_data/omapdss.h>
 #include "omap_hwmod.h"
 #include "omap_device.h"
-#include "omap-pm.h"
 #include "common.h"
 
 #include "soc.h"
@@ -126,11 +125,6 @@ static void omap_dsi_disable_pads(int dsi_id, unsigned lane_mask)
 		omap4_dsi_mux_pads(dsi_id, 0);
 }
 
-static int omap_dss_set_min_bus_tput(struct device *dev, unsigned long tput)
-{
-	return omap_pm_set_min_bus_tput(dev, OCP_INITIATOR_AGENT, tput);
-}
-
 static enum omapdss_version __init omap_display_get_version(void)
 {
 	if (cpu_is_omap24xx())
@@ -169,7 +163,6 @@ static int __init omapdss_init_fbdev(void)
 	static struct omap_dss_board_info board_data = {
 		.dsi_enable_pads = omap_dsi_enable_pads,
 		.dsi_disable_pads = omap_dsi_disable_pads,
-		.set_min_bus_tput = omap_dss_set_min_bus_tput,
 	};
 	struct device_node *node;
 	int r;
@@ -392,7 +385,7 @@ static struct device_node * __init omapdss_find_dss_of_node(void)
 	return NULL;
 }
 
-int __init omapdss_init_of(void)
+static int __init omapdss_init_of(void)
 {
 	int r;
 	struct device_node *node;
@@ -422,3 +415,4 @@ int __init omapdss_init_of(void)
 
 	return omapdss_init_fbdev();
 }
+omap_device_initcall(omapdss_init_of);
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index b064066..0103548 100644
--- a/arch/arm/mach-omap2/hsmmc.c
+++ b/arch/arm/mach-omap2/hsmmc.c
@@ -18,7 +18,6 @@
 
 #include "soc.h"
 #include "omap_device.h"
-#include "omap-pm.h"
 
 #include "hsmmc.h"
 #include "control.h"
diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c
index 91a21c3..37ff25e 100644
--- a/arch/arm/mach-omap2/i2c.c
+++ b/arch/arm/mach-omap2/i2c.c
@@ -22,7 +22,6 @@
 #include "soc.h"
 #include "omap_hwmod.h"
 #include "omap_device.h"
-#include "omap-pm.h"
 
 #include "prm.h"
 #include "common.h"
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index cf546df..bb8e0bb 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -37,7 +37,6 @@
 #include "clock.h"
 #include "clock2xxx.h"
 #include "clock3xxx.h"
-#include "omap-pm.h"
 #include "sdrc.h"
 #include "control.h"
 #include "serial.h"
@@ -421,13 +420,6 @@ static void __init __maybe_unused omap_hwmod_init_postsetup(void)
 	postsetup_state = _HWMOD_STATE_ENABLED;
 #endif
 	omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state);
-
-	omap_pm_if_early_init();
-}
-
-static void __init __maybe_unused omap_common_late_init(void)
-{
-	omap2_common_pm_late_init();
 }
 
 #ifdef CONFIG_SOC_OMAP2420
@@ -450,9 +442,7 @@ void __init omap2420_init_early(void)
 
 void __init omap2420_init_late(void)
 {
-	omap_common_late_init();
-	omap2_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap2_pm_init;
 }
 #endif
 
@@ -476,9 +466,7 @@ void __init omap2430_init_early(void)
 
 void __init omap2430_init_late(void)
 {
-	omap_common_late_init();
-	omap2_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap2_pm_init;
 }
 #endif
 
@@ -529,43 +517,12 @@ void __init am35xx_init_early(void)
 
 void __init omap3_init_late(void)
 {
-	omap_common_late_init();
-	omap3_pm_init();
-	omap2_clk_enable_autoidle_all();
-}
-
-void __init omap3430_init_late(void)
-{
-	omap_common_late_init();
-	omap3_pm_init();
-	omap2_clk_enable_autoidle_all();
-}
-
-void __init omap35xx_init_late(void)
-{
-	omap_common_late_init();
-	omap3_pm_init();
-	omap2_clk_enable_autoidle_all();
-}
-
-void __init omap3630_init_late(void)
-{
-	omap_common_late_init();
-	omap3_pm_init();
-	omap2_clk_enable_autoidle_all();
-}
-
-void __init am35xx_init_late(void)
-{
-	omap_common_late_init();
-	omap3_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap3_pm_init;
 }
 
 void __init ti81xx_init_late(void)
 {
-	omap_common_late_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap_pm_nop_init;
 }
 #endif
 
@@ -621,8 +578,7 @@ void __init am33xx_init_early(void)
 
 void __init am33xx_init_late(void)
 {
-	omap_common_late_init();
-	amx3_common_pm_init();
+	omap_pm_soc_init = amx3_common_pm_init;
 }
 #endif
 
@@ -645,9 +601,7 @@ void __init am43xx_init_early(void)
 
 void __init am43xx_init_late(void)
 {
-	omap_common_late_init();
-	omap2_clk_enable_autoidle_all();
-	amx3_common_pm_init();
+	omap_pm_soc_init = amx3_common_pm_init;
 }
 #endif
 
@@ -675,9 +629,7 @@ void __init omap4430_init_early(void)
 
 void __init omap4430_init_late(void)
 {
-	omap_common_late_init();
-	omap4_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap4_pm_init;
 }
 #endif
 
@@ -703,9 +655,7 @@ void __init omap5_init_early(void)
 
 void __init omap5_init_late(void)
 {
-	omap_common_late_init();
-	omap4_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap4_pm_init;
 }
 #endif
 
@@ -728,9 +678,7 @@ void __init dra7xx_init_early(void)
 
 void __init dra7xx_init_late(void)
 {
-	omap_common_late_init();
-	omap4_pm_init();
-	omap2_clk_enable_autoidle_all();
+	omap_pm_soc_init = omap4_pm_init;
 }
 #endif
 
diff --git a/arch/arm/mach-omap2/omap-pm-noop.c b/arch/arm/mach-omap2/omap-pm-noop.c
deleted file mode 100644
index 4ead077..0000000
--- a/arch/arm/mach-omap2/omap-pm-noop.c
+++ /dev/null
@@ -1,176 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * omap-pm-noop.c - OMAP power management interface - dummy version
- *
- * This code implements the OMAP power management interface to
- * drivers, CPUIdle, CPUFreq, and DSP Bridge.  It is strictly for
- * debug/demonstration use, as it does nothing but printk() whenever a
- * function is called (when DEBUG is defined, below)
- *
- * Copyright (C) 2008-2009 Texas Instruments, Inc.
- * Copyright (C) 2008-2009 Nokia Corporation
- * Paul Walmsley
- *
- * Interface developed by (in alphabetical order):
- * Karthik Dasu, Tony Lindgren, Rajendra Nayak, Sakari Poussa, Veeramanikandan
- * Raju, Anand Sawant, Igor Stoppa, Paul Walmsley, Richard Woodruff
- */
-
-#undef DEBUG
-
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-
-#include "omap_device.h"
-#include "omap-pm.h"
-
-static bool off_mode_enabled;
-static int dummy_context_loss_counter;
-
-/*
- * Device-driver-originated constraints (via board-*.c files)
- */
-
-int omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t)
-{
-	if (!dev || t < -1) {
-		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
-		return -EINVAL;
-	}
-
-	if (t == -1)
-		pr_debug("OMAP PM: remove max MPU wakeup latency constraint: dev %s\n",
-			 dev_name(dev));
-	else
-		pr_debug("OMAP PM: add max MPU wakeup latency constraint: dev %s, t = %ld usec\n",
-			 dev_name(dev), t);
-
-	/*
-	 * For current Linux, this needs to map the MPU to a
-	 * powerdomain, then go through the list of current max lat
-	 * constraints on the MPU and find the smallest.  If
-	 * the latency constraint has changed, the code should
-	 * recompute the state to enter for the next powerdomain
-	 * state.
-	 *
-	 * TI CDP code can call constraint_set here.
-	 */
-
-	return 0;
-}
-
-int omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r)
-{
-	if (!dev || (agent_id != OCP_INITIATOR_AGENT &&
-	    agent_id != OCP_TARGET_AGENT)) {
-		WARN(1, "OMAP PM: %s: invalid parameter(s)", __func__);
-		return -EINVAL;
-	}
-
-	if (r == 0)
-		pr_debug("OMAP PM: remove min bus tput constraint: dev %s for agent_id %d\n",
-			 dev_name(dev), agent_id);
-	else
-		pr_debug("OMAP PM: add min bus tput constraint: dev %s for agent_id %d: rate %ld KiB\n",
-			 dev_name(dev), agent_id, r);
-
-	/*
-	 * This code should model the interconnect and compute the
-	 * required clock frequency, convert that to a VDD2 OPP ID, then
-	 * set the VDD2 OPP appropriately.
-	 *
-	 * TI CDP code can call constraint_set here on the VDD2 OPP.
-	 */
-
-	return 0;
-}
-
-/*
- * DSP Bridge-specific constraints
- */
-
-
-/**
- * omap_pm_enable_off_mode - notify OMAP PM that off-mode is enabled
- *
- * Intended for use only by OMAP PM core code to notify this layer
- * that off mode has been enabled.
- */
-void omap_pm_enable_off_mode(void)
-{
-	off_mode_enabled = true;
-}
-
-/**
- * omap_pm_disable_off_mode - notify OMAP PM that off-mode is disabled
- *
- * Intended for use only by OMAP PM core code to notify this layer
- * that off mode has been disabled.
- */
-void omap_pm_disable_off_mode(void)
-{
-	off_mode_enabled = false;
-}
-
-/*
- * Device context loss tracking
- */
-
-#ifdef CONFIG_ARCH_OMAP2PLUS
-
-int omap_pm_get_dev_context_loss_count(struct device *dev)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	int count;
-
-	if (WARN_ON(!dev))
-		return -ENODEV;
-
-	if (dev->pm_domain == &omap_device_pm_domain) {
-		count = omap_device_get_context_loss_count(pdev);
-	} else {
-		WARN_ONCE(off_mode_enabled, "omap_pm: using dummy context loss counter; device %s should be converted to omap_device",
-			  dev_name(dev));
-
-		count = dummy_context_loss_counter;
-
-		if (off_mode_enabled) {
-			count++;
-			/*
-			 * Context loss count has to be a non-negative value.
-			 * Clear the sign bit to get a value range from 0 to
-			 * INT_MAX.
-			 */
-			count &= INT_MAX;
-			dummy_context_loss_counter = count;
-		}
-	}
-
-	pr_debug("OMAP PM: context loss count for dev %s = %d\n",
-		 dev_name(dev), count);
-
-	return count;
-}
-
-#else
-
-int omap_pm_get_dev_context_loss_count(struct device *dev)
-{
-	return dummy_context_loss_counter;
-}
-
-#endif
-
-/* Should be called before clk framework init */
-int __init omap_pm_if_early_init(void)
-{
-	return 0;
-}
-
-/* Must be called after clock framework is initialized */
-int __init omap_pm_if_init(void)
-{
-	return 0;
-}
diff --git a/arch/arm/mach-omap2/omap-pm.h b/arch/arm/mach-omap2/omap-pm.h
deleted file mode 100644
index 5ba5df4..0000000
--- a/arch/arm/mach-omap2/omap-pm.h
+++ /dev/null
@@ -1,161 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * omap-pm.h - OMAP power management interface
- *
- * Copyright (C) 2008-2010 Texas Instruments, Inc.
- * Copyright (C) 2008-2010 Nokia Corporation
- * Paul Walmsley
- *
- * Interface developed by (in alphabetical order): Karthik Dasu, Jouni
- * Högander, Tony Lindgren, Rajendra Nayak, Sakari Poussa,
- * Veeramanikandan Raju, Anand Sawant, Igor Stoppa, Paul Walmsley,
- * Richard Woodruff
- */
-
-#ifndef ASM_ARM_ARCH_OMAP_OMAP_PM_H
-#define ASM_ARM_ARCH_OMAP_OMAP_PM_H
-
-#include <linux/device.h>
-#include <linux/cpufreq.h>
-#include <linux/clk.h>
-#include <linux/pm_opp.h>
-
-/*
- * agent_id values for use with omap_pm_set_min_bus_tput():
- *
- * OCP_INITIATOR_AGENT is only valid for devices that can act as
- * initiators -- it represents the device's L3 interconnect
- * connection.  OCP_TARGET_AGENT represents the device's L4
- * interconnect connection.
- */
-#define OCP_TARGET_AGENT		1
-#define OCP_INITIATOR_AGENT		2
-
-/**
- * omap_pm_if_early_init - OMAP PM init code called before clock fw init
- * @mpu_opp_table: array ptr to struct omap_opp for MPU
- * @dsp_opp_table: array ptr to struct omap_opp for DSP
- * @l3_opp_table : array ptr to struct omap_opp for CORE
- *
- * Initialize anything that must be configured before the clock
- * framework starts.  The "_if_" is to avoid name collisions with the
- * PM idle-loop code.
- */
-int __init omap_pm_if_early_init(void);
-
-/**
- * omap_pm_if_init - OMAP PM init code called after clock fw init
- *
- * The main initialization code.  OPP tables are passed in here.  The
- * "_if_" is to avoid name collisions with the PM idle-loop code.
- */
-int __init omap_pm_if_init(void);
-
-/*
- * Device-driver-originated constraints (via board-*.c files, platform_data)
- */
-
-
-/**
- * omap_pm_set_max_mpu_wakeup_lat - set the maximum MPU wakeup latency
- * @dev: struct device * requesting the constraint
- * @t: maximum MPU wakeup latency in microseconds
- *
- * Request that the maximum interrupt latency for the MPU to be no
- * greater than @t microseconds. "Interrupt latency" in this case is
- * defined as the elapsed time from the occurrence of a hardware or
- * timer interrupt to the time when the device driver's interrupt
- * service routine has been entered by the MPU.
- *
- * It is intended that underlying PM code will use this information to
- * determine what power state to put the MPU powerdomain into, and
- * possibly the CORE powerdomain as well, since interrupt handling
- * code currently runs from SDRAM.  Advanced PM or board*.c code may
- * also configure interrupt controller priorities, OCP bus priorities,
- * CPU speed(s), etc.
- *
- * This function will not affect device wakeup latency, e.g., time
- * elapsed from when a device driver enables a hardware device with
- * clk_enable(), to when the device is ready for register access or
- * other use.  To control this device wakeup latency, use
- * omap_pm_set_max_dev_wakeup_lat()
- *
- * Multiple calls to omap_pm_set_max_mpu_wakeup_lat() will replace the
- * previous t value.  To remove the latency target for the MPU, call
- * with t = -1.
- *
- * XXX This constraint will be deprecated soon in favor of the more
- * general omap_pm_set_max_dev_wakeup_lat()
- *
- * Returns -EINVAL for an invalid argument, -ERANGE if the constraint
- * is not satisfiable, or 0 upon success.
- */
-int omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t);
-
-
-/**
- * omap_pm_set_min_bus_tput - set minimum bus throughput needed by device
- * @dev: struct device * requesting the constraint
- * @tbus_id: interconnect to operate on (OCP_{INITIATOR,TARGET}_AGENT)
- * @r: minimum throughput (in KiB/s)
- *
- * Request that the minimum data throughput on the OCP interconnect
- * attached to device @dev interconnect agent @tbus_id be no less
- * than @r KiB/s.
- *
- * It is expected that the OMAP PM or bus code will use this
- * information to set the interconnect clock to run at the lowest
- * possible speed that satisfies all current system users.  The PM or
- * bus code will adjust the estimate based on its model of the bus, so
- * device driver authors should attempt to specify an accurate
- * quantity for their device use case, and let the PM or bus code
- * overestimate the numbers as necessary to handle request/response
- * latency, other competing users on the system, etc.  On OMAP2/3, if
- * a driver requests a minimum L4 interconnect speed constraint, the
- * code will also need to add an minimum L3 interconnect speed
- * constraint,
- *
- * Multiple calls to omap_pm_set_min_bus_tput() will replace the
- * previous rate value for this device.  To remove the interconnect
- * throughput restriction for this device, call with r = 0.
- *
- * Returns -EINVAL for an invalid argument, -ERANGE if the constraint
- * is not satisfiable, or 0 upon success.
- */
-int omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r);
-
-
-/*
- * CPUFreq-originated constraint
- *
- * In the future, this should be handled by custom OPP clocktype
- * functions.
- */
-
-
-/*
- * Device context loss tracking
- */
-
-/**
- * omap_pm_get_dev_context_loss_count - return count of times dev has lost ctx
- * @dev: struct device *
- *
- * This function returns the number of times that the device @dev has
- * lost its internal context.  This generally occurs on a powerdomain
- * transition to OFF.  Drivers use this as an optimization to avoid restoring
- * context if the device hasn't lost it.  To use, drivers should initially
- * call this in their context save functions and store the result.  Early in
- * the driver's context restore function, the driver should call this function
- * again, and compare the result to the stored counter.  If they differ, the
- * driver must restore device context.   If the number of context losses
- * exceeds the maximum positive integer, the function will wrap to 0 and
- * continue counting.  Returns the number of context losses for this device,
- * or negative value upon error.
- */
-int omap_pm_get_dev_context_loss_count(struct device *dev);
-
-void omap_pm_enable_off_mode(void);
-void omap_pm_disable_off_mode(void);
-
-#endif
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index 3b829a5..ac219b9 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -143,7 +143,7 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
 	struct resource res;
 	const char *oh_name;
 	int oh_cnt, i, ret = 0;
-	bool device_active = false;
+	bool device_active = false, skip_pm_domain = false;
 
 	oh_cnt = of_property_count_strings(node, "ti,hwmods");
 	if (oh_cnt <= 0) {
@@ -151,8 +151,15 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
+	/* SDMA still needs special handling for omap_device_build() */
+	ret = of_property_read_string_index(node, "ti,hwmods", 0, &oh_name);
+	if (!ret && (!strncmp("dma_system", oh_name, 10) ||
+		     !strncmp("dma", oh_name, 3)))
+		skip_pm_domain = true;
+
 	/* Use ti-sysc driver instead of omap_device? */
-	if (!omap_hwmod_parse_module_range(NULL, node, &res))
+	if (!skip_pm_domain &&
+	    !omap_hwmod_parse_module_range(NULL, node, &res))
 		return -ENODEV;
 
 	hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL);
@@ -191,11 +198,12 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
 			r->name = dev_name(&pdev->dev);
 	}
 
-	dev_pm_domain_set(&pdev->dev, &omap_device_pm_domain);
-
-	if (device_active) {
-		omap_device_enable(pdev);
-		pm_runtime_set_active(&pdev->dev);
+	if (!skip_pm_domain) {
+		dev_pm_domain_set(&pdev->dev, &omap_device_pm_domain);
+		if (device_active) {
+			omap_device_enable(pdev);
+			pm_runtime_set_active(&pdev->dev);
+		}
 	}
 
 odbfd_exit1:
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index e7d23e20..2ceffd8 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -481,7 +481,7 @@ static int _wait_softreset_complete(struct omap_hwmod *oh)
 
 	sysc = oh->class->sysc;
 
-	if (sysc->sysc_flags & SYSS_HAS_RESET_STATUS)
+	if (sysc->sysc_flags & SYSS_HAS_RESET_STATUS && sysc->syss_offs > 0)
 		omap_test_timeout((omap_hwmod_read(oh, sysc->syss_offs)
 				   & SYSS_RESETDONE_MASK),
 				  MAX_MODULE_SOFTRESET_WAIT, c);
@@ -3171,19 +3171,19 @@ static int omap_hwmod_init_regbits(struct device *dev,
  */
 int omap_hwmod_init_reg_offs(struct device *dev,
 			     const struct ti_sysc_module_data *data,
-			     u32 *rev_offs, u32 *sysc_offs, u32 *syss_offs)
+			     s32 *rev_offs, s32 *sysc_offs, s32 *syss_offs)
 {
-	*rev_offs = 0;
+	*rev_offs = -ENODEV;
 	*sysc_offs = 0;
 	*syss_offs = 0;
 
-	if (data->offsets[SYSC_REVISION] > 0)
+	if (data->offsets[SYSC_REVISION] >= 0)
 		*rev_offs = data->offsets[SYSC_REVISION];
 
-	if (data->offsets[SYSC_SYSCONFIG] > 0)
+	if (data->offsets[SYSC_SYSCONFIG] >= 0)
 		*sysc_offs = data->offsets[SYSC_SYSCONFIG];
 
-	if (data->offsets[SYSC_SYSSTATUS] > 0)
+	if (data->offsets[SYSC_SYSSTATUS] >= 0)
 		*syss_offs = data->offsets[SYSC_SYSSTATUS];
 
 	return 0;
@@ -3312,8 +3312,8 @@ static int omap_hwmod_check_module(struct device *dev,
 				   struct omap_hwmod *oh,
 				   const struct ti_sysc_module_data *data,
 				   struct sysc_regbits *sysc_fields,
-				   u32 rev_offs, u32 sysc_offs,
-				   u32 syss_offs, u32 sysc_flags,
+				   s32 rev_offs, s32 sysc_offs,
+				   s32 syss_offs, u32 sysc_flags,
 				   u32 idlemodes)
 {
 	if (!oh->class->sysc)
@@ -3365,7 +3365,7 @@ static int omap_hwmod_check_module(struct device *dev,
 int omap_hwmod_allocate_module(struct device *dev, struct omap_hwmod *oh,
 			       const struct ti_sysc_module_data *data,
 			       struct sysc_regbits *sysc_fields,
-			       u32 rev_offs, u32 sysc_offs, u32 syss_offs,
+			       s32 rev_offs, s32 sysc_offs, s32 syss_offs,
 			       u32 sysc_flags, u32 idlemodes)
 {
 	struct omap_hwmod_class_sysconfig *sysc;
@@ -3425,7 +3425,8 @@ int omap_hwmod_init_module(struct device *dev,
 {
 	struct omap_hwmod *oh;
 	struct sysc_regbits *sysc_fields;
-	u32 rev_offs, sysc_offs, syss_offs, sysc_flags, idlemodes;
+	s32 rev_offs, sysc_offs, syss_offs;
+	u32 sysc_flags, idlemodes;
 	int error;
 
 	if (!dev || !data)
diff --git a/arch/arm/mach-omap2/omap_hwmod.h b/arch/arm/mach-omap2/omap_hwmod.h
index c7122ab..b70cdc2 100644
--- a/arch/arm/mach-omap2/omap_hwmod.h
+++ b/arch/arm/mach-omap2/omap_hwmod.h
@@ -317,9 +317,9 @@ struct omap_hwmod_ocp_if {
  * then this field has to be populated with the correct offset structure.
  */
 struct omap_hwmod_class_sysconfig {
-	u32 rev_offs;
-	u32 sysc_offs;
-	u32 syss_offs;
+	s32 rev_offs;
+	s32 sysc_offs;
+	s32 syss_offs;
 	u16 sysc_flags;
 	struct sysc_regbits *sysc_fields;
 	u8 srst_udelay;
diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
index 5efe91c..9ded7bf 100644
--- a/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_33xx_43xx_ipblock_data.c
@@ -629,6 +629,7 @@ struct omap_hwmod am33xx_gpmc_hwmod = {
 
 /* 'i2c' class */
 static struct omap_hwmod_class_sysconfig am33xx_i2c_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0010,
 	.syss_offs	= 0x0090,
 	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 23336b6..d93f9ea 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -885,6 +885,7 @@ static struct omap_hwmod omap3xxx_dma_system_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap3xxx_mcbsp_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x008c,
 	.sysc_flags	= (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_ENAWAKEUP |
 			   SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET),
@@ -990,6 +991,7 @@ static struct omap_hwmod omap3xxx_mcbsp5_hwmod = {
 
 /* 'mcbsp sidetone' class */
 static struct omap_hwmod_class_sysconfig omap3xxx_mcbsp_sidetone_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x0010,
 	.sysc_flags	= SYSC_HAS_AUTOIDLE,
 	.sysc_fields	= &omap_hwmod_sysc_type1,
@@ -1018,6 +1020,7 @@ static struct omap_hwmod omap3xxx_mcbsp3_sidetone_hwmod = {
 
 /* SR common */
 static struct omap_hwmod_class_sysconfig omap34xx_sr_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x24,
 	.sysc_flags	= (SYSC_HAS_CLOCKACTIVITY | SYSC_NO_CACHE),
 	.sysc_fields	= &omap34xx_sr_sysc_fields,
@@ -1030,6 +1033,7 @@ static struct omap_hwmod_class omap34xx_smartreflex_hwmod_class = {
 };
 
 static struct omap_hwmod_class_sysconfig omap36xx_sr_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x38,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
 	.sysc_flags	= (SYSC_HAS_SIDLEMODE | SYSC_HAS_ENAWAKEUP |
diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
index 5f73b73..aa271ac 100644
--- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
@@ -378,6 +378,7 @@ static struct omap_hwmod am43xx_usb_otg_ss1_hwmod = {
 };
 
 static struct omap_hwmod_class_sysconfig am43xx_qspi_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs      = 0x0010,
 	.sysc_flags     = SYSC_HAS_SIDLEMODE,
 	.idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index e4f8ae9..234ee0e 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -1360,6 +1360,7 @@ static struct omap_hwmod omap44xx_hsi_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap44xx_i2c_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0010,
 	.syss_offs	= 0x0090,
 	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
@@ -1634,6 +1635,7 @@ static struct omap_hwmod omap44xx_mailbox_hwmod = {
 
 /* The IP is not compliant to type1 / type2 scheme */
 static struct omap_hwmod_class_sysconfig omap44xx_mcasp_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0004,
 	.sysc_flags	= SYSC_HAS_SIDLEMODE,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
@@ -1667,6 +1669,7 @@ static struct omap_hwmod omap44xx_mcasp_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap44xx_mcbsp_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x008c,
 	.sysc_flags	= (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_ENAWAKEUP |
 			   SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET),
@@ -2353,6 +2356,7 @@ static struct omap_hwmod omap44xx_slimbus2_hwmod = {
 
 /* The IP is not compliant to type1 / type2 scheme */
 static struct omap_hwmod_class_sysconfig omap44xx_smartreflex_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x0038,
 	.sysc_flags	= (SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE),
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
diff --git a/arch/arm/mach-omap2/omap_hwmod_54xx_data.c b/arch/arm/mach-omap2/omap_hwmod_54xx_data.c
index c72cd84..887a30f 100644
--- a/arch/arm/mach-omap2/omap_hwmod_54xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_54xx_data.c
@@ -804,6 +804,7 @@ static struct omap_hwmod omap54xx_gpio8_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap54xx_i2c_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0010,
 	.syss_offs	= 0x0090,
 	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
@@ -974,6 +975,7 @@ static struct omap_hwmod omap54xx_mailbox_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap54xx_mcbsp_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x008c,
 	.sysc_flags	= (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_ENAWAKEUP |
 			   SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET),
@@ -1997,6 +1999,7 @@ static struct omap_hwmod omap54xx_ocp2scp3_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig omap54xx_sata_sysc = {
+	.rev_offs	= 0x00fc,
 	.sysc_offs	= 0x0000,
 	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index 62352d1..a27c2fe 100644
--- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
@@ -1070,6 +1070,7 @@ static struct omap_hwmod dra7xx_hdq1w_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig dra7xx_i2c_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0010,
 	.syss_offs	= 0x0090,
 	.sysc_flags	= (SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY |
@@ -1440,6 +1441,7 @@ static struct omap_hwmod dra7xx_mcspi4_hwmod = {
  *
  */
 static struct omap_hwmod_class_sysconfig dra7xx_mcasp_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0004,
 	.sysc_flags	= SYSC_HAS_SIDLEMODE,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
@@ -1898,6 +1900,7 @@ static struct omap_hwmod dra7xx_pciess2_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig dra7xx_qspi_sysc = {
+	.rev_offs	= 0,
 	.sysc_offs	= 0x0010,
 	.sysc_flags	= SYSC_HAS_SIDLEMODE,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
@@ -1930,6 +1933,7 @@ static struct omap_hwmod dra7xx_qspi_hwmod = {
  *
  */
 static struct omap_hwmod_class_sysconfig dra7xx_rtcss_sysc = {
+	.rev_offs	= 0x0074,
 	.sysc_offs	= 0x0078,
 	.sysc_flags	= SYSC_HAS_SIDLEMODE,
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
@@ -1965,6 +1969,7 @@ static struct omap_hwmod dra7xx_rtcss_hwmod = {
  */
 
 static struct omap_hwmod_class_sysconfig dra7xx_sata_sysc = {
+	.rev_offs	= 0x00fc,
 	.sysc_offs	= 0x0000,
 	.sysc_flags	= (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
@@ -2003,6 +2008,7 @@ static struct omap_hwmod dra7xx_sata_hwmod = {
 
 /* The IP is not compliant to type1 / type2 scheme */
 static struct omap_hwmod_class_sysconfig dra7xx_smartreflex_sysc = {
+	.rev_offs	= -ENODEV,
 	.sysc_offs	= 0x0038,
 	.sysc_flags	= (SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE),
 	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
index 686655f..8e44e27 100644
--- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c
@@ -954,6 +954,7 @@ static struct omap_hwmod_ocp_if dm816x_l4_hs__emac1 = {
 };
 
 static struct omap_hwmod_class_sysconfig dm81xx_sata_sysc = {
+	.rev_offs	= 0x00fc,
 	.sysc_offs	= 0x1100,
 	.sysc_flags	= SYSC_HAS_SIDLEMODE,
 	.idlemodes	= SIDLE_FORCE,
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 6459816..7f02743 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -26,14 +26,12 @@
 #include <linux/platform_data/iommu-omap.h>
 #include <linux/platform_data/ti-sysc.h>
 #include <linux/platform_data/wkup_m3.h>
-#include <linux/platform_data/media/ir-rx51.h>
 #include <linux/platform_data/asoc-ti-mcbsp.h>
 
 #include "common.h"
 #include "common-board-devices.h"
 #include "control.h"
 #include "omap_device.h"
-#include "omap-pm.h"
 #include "omap-secure.h"
 #include "soc.h"
 #include "hsmmc.h"
@@ -514,18 +512,6 @@ void omap_auxdata_legacy_init(struct device *dev)
 	dev->platform_data = &twl_gpio_auxdata;
 }
 
-static struct ir_rx51_platform_data __maybe_unused rx51_ir_data = {
-	.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
-};
-
-static struct platform_device __maybe_unused rx51_ir_device = {
-	.name           = "ir_rx51",
-	.id             = -1,
-	.dev            = {
-		.platform_data = &rx51_ir_data,
-	},
-};
-
 #if IS_ENABLED(CONFIG_SND_OMAP_SOC_MCBSP)
 static struct omap_mcbsp_platform_data mcbsp_pdata;
 static void __init omap3_mcbsp_init(void)
@@ -569,7 +555,6 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 		       "480c9000.smartreflex", &omap_sr_pdata[OMAP_SR_MPU]),
 	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
 	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
-	OF_DEV_AUXDATA("nokia,n900-ir", 0, "n900-ir", &rx51_ir_data),
 	/* Only on am3517 */
 	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 5c46ea6..acb698d 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -31,7 +31,6 @@
 #include "clock.h"
 #include "powerdomain.h"
 #include "clockdomain.h"
-#include "omap-pm.h"
 
 #include "soc.h"
 #include "cm2xxx_3xxx.h"
@@ -240,10 +239,6 @@ static int option_set(void *data, u64 val)
 	*option = val;
 
 	if (option == &enable_off_mode) {
-		if (val)
-			omap_pm_enable_off_mode();
-		else
-			omap_pm_disable_off_mode();
 		if (cpu_is_omap34xx())
 			omap3_pm_off_mode_enable(val);
 	}
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 6f68576..ca03af8 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -16,11 +16,11 @@
 #include <linux/pm_opp.h>
 #include <linux/export.h>
 #include <linux/suspend.h>
+#include <linux/clk.h>
 #include <linux/cpu.h>
 
 #include <asm/system_misc.h>
 
-#include "omap-pm.h"
 #include "omap_device.h"
 #include "common.h"
 
@@ -230,16 +230,20 @@ static void __init omap4_init_voltages(void)
 	omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
 }
 
-static int __init omap2_common_pm_init(void)
+int __maybe_unused omap_pm_nop_init(void)
 {
-	omap_pm_if_init();
-
 	return 0;
 }
-omap_postcore_initcall(omap2_common_pm_init);
+
+int (*omap_pm_soc_init)(void);
 
 int __init omap2_common_pm_late_init(void)
 {
+	int error;
+
+	if (!omap_pm_soc_init)
+		return 0;
+
 	/* Init the voltage layer */
 	omap3_twl_init();
 	omap4_twl_init();
@@ -252,5 +256,12 @@ int __init omap2_common_pm_late_init(void)
 	/* Smartreflex device init */
 	omap_devinit_smartreflex();
 
+	error = omap_pm_soc_init();
+	if (error)
+		pr_warn("%s: pm soc init failed: %i\n", __func__, error);
+
+	omap2_clk_enable_autoidle_all();
+
 	return 0;
 }
+omap_late_initcall(omap2_common_pm_late_init);
diff --git a/arch/arm/mach-omap2/pm33xx-core.c b/arch/arm/mach-omap2/pm33xx-core.c
index 93c0b5b..9b3755a 100644
--- a/arch/arm/mach-omap2/pm33xx-core.c
+++ b/arch/arm/mach-omap2/pm33xx-core.c
@@ -173,7 +173,7 @@ static struct am33xx_pm_platform_data *am33xx_pm_get_pdata(void)
 		return NULL;
 }
 
-void __init amx3_common_pm_init(void)
+int __init amx3_common_pm_init(void)
 {
 	struct am33xx_pm_platform_data *pdata;
 	struct platform_device_info devinfo;
@@ -186,4 +186,6 @@ void __init amx3_common_pm_init(void)
 	devinfo.size_data = sizeof(*pdata);
 	devinfo.id = -1;
 	platform_device_register_full(&devinfo);
+
+	return 0;
 }
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 4fb4dc2..5a70ab6 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -50,7 +50,6 @@
 #include "omap_device.h"
 #include <plat/counter-32k.h>
 #include <clocksource/timer-ti-dm.h>
-#include "omap-pm.h"
 
 #include "soc.h"
 #include "common.h"
@@ -168,6 +167,43 @@ static const struct of_device_id omap_timer_match[] __initconst = {
 	{ }
 };
 
+static int omap_timer_add_disabled_property(struct device_node *np)
+{
+	struct property *prop;
+
+	prop = kzalloc(sizeof(*prop), GFP_KERNEL);
+	if (!prop)
+		return -ENOMEM;
+
+	prop->name = "status";
+	prop->value = "disabled";
+	prop->length = strlen(prop->value);
+
+	return of_add_property(np, prop);
+}
+
+static int omap_timer_update_dt(struct device_node *np)
+{
+	int error = 0;
+
+	if (!of_device_is_compatible(np, "ti,omap-counter32k")) {
+		error = omap_timer_add_disabled_property(np);
+		if (error)
+			return error;
+	}
+
+	/* No parent interconnect target module configured? */
+	if (of_get_property(np, "ti,hwmods", NULL))
+		return error;
+
+	/* Tag parent interconnect target module disabled */
+	error = omap_timer_add_disabled_property(np->parent);
+	if (error)
+		return error;
+
+	return 0;
+}
+
 /**
  * omap_get_timer_dt - get a timer using device-tree
  * @match	- device-tree match structure for matching a device type
@@ -183,6 +219,7 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id *
 						     const char *property)
 {
 	struct device_node *np;
+	int error;
 
 	for_each_matching_node(np, match) {
 		if (!of_device_is_available(np))
@@ -197,17 +234,9 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id *
 				  of_get_property(np, "ti,timer-secure", NULL)))
 			continue;
 
-		if (!of_device_is_compatible(np, "ti,omap-counter32k")) {
-			struct property *prop;
+		error = omap_timer_update_dt(np);
+		WARN(error, "%s: Could not update dt: %i\n", __func__, error);
 
-			prop = kzalloc(sizeof(*prop), GFP_KERNEL);
-			if (!prop)
-				return NULL;
-			prop->name = "status";
-			prop->value = "disabled";
-			prop->length = strlen(prop->value);
-			of_add_property(np, prop);
-		}
 		return np;
 	}
 
@@ -266,8 +295,12 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
 		return -ENODEV;
 
 	of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
-	if (!oh_name)
-		return -ENODEV;
+	if (!oh_name) {
+		of_property_read_string_index(np->parent, "ti,hwmods", 0,
+					      &oh_name);
+		if (!oh_name)
+			return -ENODEV;
+	}
 
 	timer->irq = irq_of_parse_and_map(np, 0);
 	if (!timer->irq)
@@ -419,9 +452,12 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
 	if (!np)
 		return -ENODEV;
 
-	of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
-	if (!oh_name)
-		return -ENODEV;
+	of_property_read_string_index(np->parent, "ti,hwmods", 0, &oh_name);
+	if (!oh_name) {
+		of_property_read_string_index(np, "ti,hwmods", 0, &oh_name);
+		if (!oh_name)
+			return -ENODEV;
+	}
 
 	/*
 	 * First check hwmod data is available for sync32k counter