Errata i688 is also applicable for OMAP5 based devices. Update the
code so that it can be enabled on OMAP5 devices.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

We should not select drivers from kconfig as they should by default
be optional. Otherwise we'll be chasing broken dependencies forever:

warning: (MACH_OMAP_ZOOM2 && MACH_OMAP_ZOOM3 && MWAVE) selects SERIAL_8250
which has unmet direct dependencies (TTY && HAS_IOMEM && GENERIC_HARDIRQS)

Fix the issue by removing the selects for zoom and add them to
omap2plus_defconfig.
Reported-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NTony Lindgren <tony@atomide.com>

As apollon board doesn't used anymore, remove it.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
[tony@atomide.com: dropped uncompress.h changes, it's gone]
Signed-off-by: NTony Lindgren <tony@atomide.com>

The core functionality of the arch_timer driver is not directly tied to
anything under arch/arm, and can be split out.

This patch factors out the core of the arch_timer driver, so it can be
shared with other architectures. A couple of functions are added so
that architecture-specific code can interact with the driver without
needing to touch its internals.

The ARM_ARCH_TIMER config variable is moved out to
drivers/clocksource/Kconfig, existing uses in arch/arm are replaced with
HAVE_ARM_ARCH_TIMER, which selects it.
Signed-off-by: NMark Rutland <mark.rutland@arm.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Acked-by: NMarc Zyngier <marc.zyngier@arm.com>

Flip on multiplatform support for omap2+.

No changes to omap2plus_defconfig needed, but please note
that you may need to update your custom config files to
make sure you have:

CONFIG_ARCH_MULTIPLATFORM=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_OMAP2PLUS=y

And may need CONFIG_ARCH_MULTI_V6=y if booting omap2 boards.

Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

We still need to fix up few places for multiplatform support,
but that can proceed separately. Fix the issue by making the
problem drivers depends !ARCH_MULTIPLATFORM for now.

The remaining pieces that are not multiplatform compatible
for omap2+ SoCs are:

1. Some drivers are using custom omap_dm_timer calls

There are two drivers that are directly usign omap hardware
timers for PWM and DSP clocking: drivers/media/rc/ir-rx51.c and
drivers/staging/tidspbridge/core/dsp-clock.c. These can be
fixed for multiplatform by allowing a minimal set of hardware
timers to be accessed, and for some functionality by using the
hrtimer framework.

2. Hardware OMAP4_ERRATA_I688 needs to be fixed up

This can't be enabled for multiplatform configurations in
it's current form. It may be possible to fix it up to do
instruction replacement early on during init. Luckily it
looks like this errata does not seem to get hit with
mainline kernel code alone at least currently.

3. Legacy header needed for omap-sham.c

Looks like it still needs mach/irqs.h for omap1 that
does not exist for multiplatform systems. Just ifdef
it for now.

4. Mailbox is waiting to get moved to drivers

Disable it for now to avoid adding a dependency to the
mailbox patches.

Cc: Timo Kokkonen <timo.t.kokkonen@iki.fi>
Cc: Sean Young <sean@mess.org>
Cc: "Víctor Manuel Jáquez Leal" <vjaquez@igalia.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
[tony@atomide.com: updated to disable mailbox]
Signed-off-by: NTony Lindgren <tony@atomide.com>

In commit fa6d79d2 (ARM: OMAP: Add initialisation for the real-time
counter), the function realtime_counter_init() was added. However, if
the kernel configuration option CONFIG_SOC_OMAP5 is not selected then
the following compiler warning is observed.

  CC      arch/arm/mach-omap2/timer.o
  arch/arm/mach-omap2/timer.c:489:20: warning: ‘realtime_counter_init’
  defined but not used [-Wunused-function]

Commit fa6d79d2 also introduced the kernel configuration option
CONFIG_SOC_HAS_REALTIME_COUNTER. If this option is not selected then the
a stub function for realtime_counter_init() is defined.

For non-OMAP5 devices, there is no realtime counter and so
realtime_counter_init() function and stub function are not used for
these devices. Therefore, fix this warning by only allowing the kernel
configuration option CONFIG_SOC_HAS_REALTIME_COUNTER to be enabled for
OMAP5 devices.

Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reported-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NJon Hunter <jon-hunter@ti.com>
Acked-by Santosh Shilimkar <santosh.shilimkar@ti.com>

Select COMMON_CLK for all OMAP2+ SoCs and switch over to using new
data files for OMAP2/3/4.

The older data files will get removed in subsequent patches.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
[paul@pwsan.com: move 'select COMMON_CLK' from ARCH_OMAP2PLUS_TYPICAL to
 the per-SoC and per-"arch" Kconfig sections]
[mturquette@ti.com: fixed up #ifdef mismatch in clock.h in previous
  patch which drops that change from this patch]
Signed-off-by: NMike Turquette <mturquette@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

Commit 8f31cefe (ARM: OMAP2+: select PINCTRL in Kconfig)
added select PINCTRL, but accdentally added it to a wrong
location.

We want to select if for ARCH_OMAP2PLUS, not for
ARCH_OMAP2PLUS_TYPICAL.
Signed-off-by: NTony Lindgren <tony@atomide.com>

This adds product names (that most users know) to Kconfig and board
comments.
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Reviewed-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NTony Lindgren <tony@atomide.com>

As suggested by Andrew Morton:

  This is a pet peeve of mine.  Any time there's a long list of items
  (header file inclusions, kconfig entries, array initalisers, etc) and
  someone wants to add a new item, they *always* go and stick it at the
  end of the list.

  Guys, don't do this.  Either put the new item into a randomly-chosen
  position or, probably better, alphanumerically sort the list.

lets sort all our select statements alphanumerically.  This commit was
created by the following perl:

while (<>) {
	while (/\\\s*$/) {
		$_ .= <>;
	}
	undef %selects if /^\s*config\s+/;
	if (/^\s+select\s+(\w+).*/) {
		if (defined($selects{$1})) {
			if ($selects{$1} eq $_) {
				print STDERR "Warning: removing duplicated $1 entry\n";
			} else {
				print STDERR "Error: $1 differently selected\n".
					"\tOld: $selects{$1}\n".
					"\tNew: $_\n";
				exit 1;
			}
		}
		$selects{$1} = $_;
		next;
	}
	if (%selects and (/^\s*$/ or /^\s+help/ or /^\s+---help---/ or
			  /^endif/ or /^endchoice/)) {
		foreach $k (sort (keys %selects)) {
			print "$selects{$k}";
		}
		undef %selects;
	}
	print;
}
if (%selects) {
	foreach $k (sort (keys %selects)) {
		print "$selects{$k}";
	}
}

It found two duplicates:

Warning: removing duplicated S5P_SETUP_MIPIPHY entry
Warning: removing duplicated HARDIRQS_SW_RESEND entry

and they are identical duplicates, hence the shrinkage in the diffstat
of two lines.

We have four testers reporting success of this change (Tony, Stephen,
Linus and Sekhar.)
Acked-by: NJason Cooper <jason@lakedaemon.net>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NStephen Warren <swarren@nvidia.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

OMAP interconnect drivers are used for the interconnect error handling.
Since they are bus driver, lets move it to newly created drivers/bus.
Tested-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable Cortex A15 generic timer support for OMAP5 based SOCs.
The CPU local timers run on the free running real time counter clock.
Acked-by: NBenoit Cousson <b-cousson@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

The real time counter also called master counter, is a free-running
counter. It produces the count used by the CPU local timer peripherals
in the MPU cluster. The timer counts at a rate of 6.144 MHz.

The ratio registers needs to be configured based on system clock
only onetime. After initialisation, hardware takes care of adjusting
the clock in different low power modes to keep counter rate constant.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

Select PINCTRL in Kconfig under Typical OMAP configuration, this
is required to add pinctrl driver to omap2+ family of devices.
Signed-off-by: NAnilKumar Ch <anilkumar@ti.com>
[tony@atomide.com: updated to select pinctrl-single in defconfig]
Signed-off-by: NTony Lindgren <tony@atomide.com>

Fix inconsistency between mach-types and CONFIG_ name that prevents
touchbook board from booting.
Signed-off-by: NRadek Pilar <mrkva@mrkva.eu>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The new omap4 cpuidle implementation currently requires
ARCH_NEEDS_CPU_IDLE_COUPLED, which only works on SMP.

This patch makes it possible to build a non-SMP kernel
for that platform. This is not normally desired for
end-users but can be useful for testing.

Without this patch, building rand-0y2jSKT results in:

drivers/cpuidle/coupled.c: In function 'cpuidle_coupled_poke':
drivers/cpuidle/coupled.c:317:3: error: implicit declaration of function '__smp_call_function_single' [-Werror=implicit-function-declaration]

It's not clear if this patch is the best solution for
the problem at hand. I have made sure that we can now
build the kernel in all configurations, but that does
not mean it will actually work on an OMAP44xx.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>

The random config builds with PM and !ARM_CPU_SUSPEND breaks with below
error on omap2plus_defconfig.

arch/arm/mach-omap2/sleep44xx.S:323: undefined reference to `cpu_resume'
arch/arm/mach-omap2/omap-mpuss-lowpower.c:278: undefined reference to `cpu_suspend'

This is because recently merged OMAP5 platform shares the common files
with OMAP4 but doesn't select ARM_CPU_SUSPEND. Without the ARM_CPU_SUSPEND
the sleep code is meaningless.

Fix the same by adding ARM_CPU_SUSPEND for OMAP5. The suggestion came from
Russell King in an off-list discussion.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Kevin Hilman <khilman@ti.com>
Reported-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

OMAP4 CPUDILE driver is converted mainly based on notes from the
coupled cpuidle patch series.

The changes include :
- Register both CPUs and C-states to cpuidle driver.
- Set struct cpuidle_device.coupled_cpus
- Set struct cpuidle_device.safe_state to non coupled state.
- Set CPUIDLE_FLAG_COUPLED in struct cpuidle_state.flags for each
  state that affects multiple cpus.
- Separate ->enter hooks for coupled & simple idle.
- CPU0 wait loop for CPU1 power transition.
- CPU1 wakeup mechanism for the idle exit.
- Enabling ARCH_NEEDS_CPU_IDLE_COUPLED for OMAP4.

Thanks to Kevin Hilman and Colin Cross on the suggestions/fixes
on the intermediate version of this patch.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NKevin Hilman <khilman@ti.com>

Adding the build support required for OMAP5 soc
in to omap2+ config.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NR Sricharan <r.sricharan@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>

The function __omap2_set_globals() can be common across all
platforms/architectures, even in case of omap4, internally it
calls same set of functions as in __omap2_set_globals() function
(except for sdrc).
This patch adds new config flag SOC_HAS_OMAP2_SDRC to handle sdrc,
so that we can reuse same function across omap2/3/4...
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Initially, we decided to make am33xx family of device to fall
under omap3 class (cpu_is_omap34xx() = true), since it carries
Cortex-A8 core. But while adding complete baseport support
(like, clock, power and hwmod) support, it is observed that,
we are creating more and more problems by treating am33xx device
as omap3 family, as nothing matches between them
(except cortex-A8 mpu).

So,  after long discussion we have came to the conclusion that,
we should not consider am33xx device as omap3 family, instead
create separate class (SOC_AM33XX) under OMAP2PLUS.
This means, for am33xx device, cpu_is_omap34xx() will return false,
and only cpu_is_am33xx() will be true.

Please refer to the link below, for mailing-list discussion on this -

http://www.spinics.net/lists/linux-omap/msg69439.htmlSigned-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
[tony@atomide.com: fixed typo, updated for soc_is changes]
Signed-off-by: NTony Lindgren <tony@atomide.com>

commit 164e0cbf (ARM: OMAP3/4: consolidate cpuidle Makefile) added
an OMAP-specific dependency from CPU_IDLE to CONFIG_PM.  This causes
some randconfig warnings when CONFIG_PM has unmet dependencies:

warning: (ARCH_OMAP3 && ARCH_OMAP4) selects PM which has unmet direct dependencies (PM_SLEEP || PM_RUNTIME)
warning: (ARCH_OMAP3 && ARCH_OMAP4) selects PM which has unmet direct dependencies (PM_SLEEP || PM_RUNTIME)
warning: (ARCH_OMAP3 && ARCH_OMAP4) selects PM which has unmet direct dependencies (PM_SLEEP || PM_RUNTIME)

Fix this by making the dependency on CONFIG_PM_RUNTIME (which in turn
will enable CONFIG_PM.)
Reported-by: NTony Lindgren <tony@atomide.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NKevin Hilman <khilman@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The current Makefile compiles the cpuidle34xx.c and cpuidle44xx.c files
even if the cpuidle option is not set in the kernel.

This patch fixes this by creating a section in the Makefile where these
files are compiled only if the CONFIG_CPU_IDLE option is set.

This modification breaks an implicit dependency between CPU_IDLE and PM as
they belong to the same block in the Makefile. This is fixed in the Kconfig
by selecting explicitely PM is CPU_IDLE is set.

The linux coding style recommend to use no-op functions in the headers
when the subsystem is disabled instead of adding big section in C files.

This patch fix this also.
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: NJean Pihet <j-pihet@ti.com>
Reviewed-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NKevin Hilman <khilman@ti.com>

The FS (Full Speed) USB controller is available on 2420 and 2430,
but not being used.

Out of the 2420 based boards only Nokia N8X0 are seeing active
development and they have external HS (High Speed) TUSB controller.
On omap 2430sdp there is MUSB HS controller, so there's no need
to use the legacy USB FS controller.

That leaves only H4 and Apollon boards that could use the FS USB
controller. As both H4 and Apollon boards are old proprietary
development boards, it's unlikely that we have any active
developers working on those boards using the USB.

So remove the FS USB support for omap2 machines. Patches are
welcome if somebody wants to instead fix it all up to the
current standards.

Cc: linux-usb@vger.kernel.org
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

We should not select ARCH_OMAP_OTG as the hardware does not
have the legacy FS (Full Speed) USB interface.

Cc: linux-usb@vger.kernel.org
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

No need to have an OMAP prefix on these SoCs that are in the family
but arent' really called OMAP.

Simple rename: CONFIG_SOC_OMAPAM33XX --> CONFIG_SOC_AM33XX

No functional change.
Signed-off-by: NKevin Hilman <khilman@ti.com>
Acked-by: NVaibhav Hiremath <hvaibhav@ti.com>
[tony@atomide.com: updated for the driver config change also]
Signed-off-by: NTony Lindgren <tony@atomide.com>

No need to have an OMAP prefix on these SoCs that are in the family
but arent' really called OMAP.

Simple rename: CONFIG_SOC_OMAPTI81XX --> CONFIG_SOC_TI81XX

No functional change.
Signed-off-by: NKevin Hilman <khilman@ti.com>
Acked-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

HIGMEM support in kernel is quite mature now and we have boards
like ZOOM, PANDA, SDP where 1 GB memories are installed. With
HIGHMEM disabled not all of the 1GB of RAM (only ~700MB) can be
accessed. Hence, enable HIGMEM to make use of the entire memory.

On the boards which doesn't have more than 768 MB memory, all
the memory is directly mapped in "lowmem" and highmem isn't
exercised. Hence, there should be no impact by enabling HIGHMEM
for boards that do not need it.

Tested on OMAP4460 Panda-ES.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NJon Hunter <jon-hunter@ti.com>
Tested-by: NJon Hunter <jon-hunter@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This reverts commit c295fb63.

This makes existing .config files bloated by selecting in all
omaps as noted by Russell King - ARM Linux <linux@arm.linux.org.uk>.
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add minimal support for Nokia RM-696 board.
Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

If we don't have ARCH_OMAP2, 3 or 4 selected randconfig will always
fail with multiple errors as the CPU and MACHINE are not set.

Fix this by changing arch/arm/Makefile to build mach-omap2 based on
ARCH_OMAP2PLUS. And let's introduce SOC_OMAP and SOC_OMAP_NOOP that
allow randconfig to generate buildable .config files.

Note that we can also remove few uncecssary ARCH_OMAP2PLUS lines
as they are all within if ARCH_OMAP2PLUS block.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Otherwise we get:

warning: (ARCH_OMAP3 && ARCH_OMAP4) selects USB_ARCH_HAS_EHCI
which has unmet direct dependencies (USB_SUPPORT)
Signed-off-by: NTony Lindgren <tony@atomide.com>

arm_memblock_steal() is not suppose to be used outside ->reserve callback.
OMAP barrier errata code was using it outside reserve callback and hence
it was broken.

Move the allocation as part of ->reserve callback to fix the it.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

To ensure correct alignment of cacheline-aligned data, the maximum
cacheline size needs to be known at compile time.

Since Cortex-A8 and Cortex-A15 have 64-byte cachelines (and it is likely
that there will be future ARMv7 implementations with the same line size)
then it makes sense to assume that CPU_V7 implies a 64-byte L1 cacheline
size. For CPUs with smaller caches, this will result in some harmless
padding but will help with single zImage work and avoid hitting subtle
bugs with misaligned data structures.
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

warning: (MACH_OMAP_ZOOM2 && MACH_OMAP_ZOOM3 && MACH_OMAP_4430SDP &&
MACH_OMAP4_PANDA && TPS6105X) selects REGULATOR_FIXED_VOLTAGE
which has unmet direct dependencies (REGULATOR)
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

warning: (MACH_OMAP3_TOUCHBOOK && DRM_RADEON_KMS && DRM_I915 &&
STUB_POULSBO && FB_BACKLIGHT && USB_APPLEDISPLAY && FB_OLPC_DCON &&
ASUS_LAPTOP && SONY_LAPTOP && THINKPAD_ACPI && EEEPC_LAPTOP &&
ACPI_ASUS && ACPI_CMPC && SAMSUNG_Q10) selects BACKLIGHT_CLASS_DEVICE
which has unmet direct dependencies (HAS_IOMEM && BACKLIGHT_LCD_SUPPORT)

A lot of boards need BACKLIGHT_CLASS_DEVICE for the framebuffers to
work, but it's not *needed* for the device itself. It might be nice to
enable it by default somewhoe if graphics stuff is enabled, but that's
another story.
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Several platforms are now using the memblock_alloc+memblock_free+
memblock_remove trick to obtain memory which won't be mapped in the
kernel's page tables.  Most platforms do this (correctly) in the
->reserve callback.  However, OMAP has started to call these functions
outside of this callback, and this is extremely unsafe - memory will
not be unmapped, and could well be given out after memblock is no
longer responsible for its management.

So, provide arm_memblock_steal() to perform this function, and ensure
that it panic()s if it is used inappropriately.  Convert everyone
over, including OMAP.

As a result, OMAP with OMAP4_ERRATA_I688 enabled will panic on boot
with this change.  Mark this option as BROKEN and make it depend on
BROKEN.  OMAP needs to be fixed, or 137d105d (ARM: OMAP4: Fix
errata i688 with MPU interconnect barriers.) reverted until such
time it can be fixed correctly.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

If running in the Normal World on a TrustZone-enabled SoC, Linux
does not have complete control over the L2 cache controller
configuration.  The kernel cannot work reliably on such platforms
without the l2x0 cache support code built in.

This patch unconditionally enables l2x0 support for the OMAP4 SoCs.

Thanks to Rob Herring for this suggestion.  [1]

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2011-November/074495.htmlSigned-off-by: NDave Martin <dave.martin@linaro.org>
Acked-by: NTony Lindgren <tony@atomide.com>

Making SMP depend on (huge list of MACH_ and ARCH_ configs) is
bothersome to maintain and likely to lead to merge conflicts.

This patch moves the knowledge of which platforms are SMP-capable
to the individual machines.  To enable this, a new HAVE_SMP config
option is introduced to allow machines to indicate that they can
run in a SMP configuration.
Signed-off-by: NDave Martin <dave.martin@linaro.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
        (for nomadik, ux500)
Acked-by: NTony Lindgren <tony@atomide.com>
        (for omap)
Acked-by: NKukjin Kim <kgene.kim@samsung.com>
        (for exynos)
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
        (for imx)
Acked-by: NOlof Johansson <olof@lixom.net>
        (for tegra)