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Converted .dts file to use skeleton.dtsi, and added 'dtbs' target.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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On recent make, commit 1449fb96, "arm/dt: Add a make rule to build
dtb for enabled boards" breaks build of the kernel immediately:
/projects/linaro/linux-2.6/arch/arm/Makefile:292: *** mixed implicit
and normal rules. Stop.
> $ rpm -q make
> make-3.82-4.fc15.x86_64
>
> ''The previous behavior of mixing implicit and pattern rules in one line
> like that was never supported or documented, but due to a "hole" in the
> parser it worked for certain specific cases (for example, reversing that
> line so the pattern comes first would not work, nor would adding extra
> explicit targets after the pattern target).
>
> In 3.82, the parser was tightened in this respect and that "hole" was
> closed, hence you see this error.''
This patch splits the rule to fix the bug.
Reported-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Without this an OOPS can be seen at shutdown because the peripheral
unit is unclocked, leading to an "imprecise external abort"
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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With commit 19403165 a main part of ehci-omap.c moved to
drivers/mfd/omap-usb-host.c created by commit 17cdd29d.
Due to this reorganisation the polarity used to reset the
external USB phy changed and USB host doesn't recognize
any devices.
Signed-off-by: Juergen Kilb <J.Kilb@phytec.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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This patch provides a simple device tree source for the Versatile
Express board. It just defines memory layout and assigns a compatible string
to the board.
Compiled blob tested on Versatile Express, passed to the kernel
through u-boot. 'chosen' node defined within u-boot to avoid cluttering
the default dts configuration.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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This patch adds a DT match table to the Versatile Express machine
description in order to enable basic device tree support.
Tested on a Versatile Express board where the device tree blob is
passed to the kernel by u-boot.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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On Exynos4210 SOC, of all the HSMMC controllers only HSMMC2 can
be used as a boot media. Hence the default SD/MMC card should be
connected to HSMMC2. The secondary card is connected to HSMMC0.
If HSMMC0 is registered before HSMMC2, the device node for default
MMC card changes depending on whether secondary card is connected
or not. It creates problem in mounting the file-system present in
default SD/MMC card. Hence HSMMC2 should be registered before HSMMC0.
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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VFP registers d16-d31 are callee saved registers and must be preserved
during function calls, including fork(). The VFP configuration should
also be preserved. The patch copies the full VFP state to the child
process.
Reported-by: Paul Wright <paul.wright@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit c98c09773d80db93cae349f0496fef109feab54d)
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This patch adds THREAD_NOTIFY_COPY for calling registered handlers
during the copy_thread() function call. It also changes the VFP handler
to use a switch statement rather than if..else and ignore this event.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 2e82669acf03e5bf2080f5d3ef005168e67d8a51)
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The HIGHPTE config option depends on !OUTER_CACHE. However, there is no
set_pte_ext() function that does outer cache maintenance by physical
address, hence no need for such restriction.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 974508262e94b567f9d5b7ba1eef9fc493561f63)
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Commit a737823d ("ARM: perf: ensure overflows aren't missed due to IRQ
latency") changed the way that event deltas are calculated on overflow
so that we don't miss events when the new count value overtakes the
previous one.
Unfortunately, we forget to count the event that passes through zero so
we end up being off by 1. This patch adds on the correction.
Reported-by: Chris Moore <moore@free.fr>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 6759788b944139793bffa889761cc3d8d703fdc0)
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The DBGVCR, used for configuring vector catch debug events, is UNKNOWN
out of reset on ARMv7. When enabling monitor mode, this must be zeroed
to avoid UNPREDICTABLE behaviour.
This patch adds the zeroing code to the debug reset path.
Cc: stable <stable@kernel.org>
Reported-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit e89c0d7090c54d7b11b9b091e495a1ae345dd3ff)
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On SMDKV310 board, a card detect gpio pin is available that is directly
connected to the io pad of the sdhci controller. Fix incorrect value
of cd_type field in platform data for sdhci instance 0 and 2.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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The S3C_GPIO_PULL_UP macro value incorrectly maps to a reserved setting of GPIO
pull up/down registers on Exynos4 platform. Fix this incorrect mapping by adding
wrappers to the s3c_gpio_setpull_updown and s3c_gpio_getpull_updown functions.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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This patch supports cpuidle framework for EXYNOS4210. Currently,
Only one idle state is possible to use, but more idle states can
be added following by this patch.
Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
(cherry picked from commit df7bf189d23ecd1c211c273de462b93d9e3e1fef)
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Our SET_PERSONALITY() implementation was overwriting all existing
personality flags, including ADDR_NO_RANDOMIZE, making them unavailable
to processes being exec'd after a call to personality() in user space.
This prevents the gdb test suite from running successfully.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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This patch migrates the implementation of the ptrace interface for
the core integer registers, legacy FPA registers and VFP registers
to use the regsets framework.
As an added bonus, all this stuff gets included in coredumps
at no extra cost. Without this patch, coredumps contained no
VFP state.
Third-party extension register sets (iwmmx, crunch) are not migrated
by this patch, and continue to use the old implementation;
these should be migratable without much extra work.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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The VFP registers are not currently included in coredumps,
and there's no existing note type where they can sensibly be
included, so this patch defines a dedicated note type for them.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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With 'make ARCH=arm dtb', it builds Device Tree Blobs for those boards
enabled by build CONFIG.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Offering CONFIG_PM_SLEEP for CPUs which do not support suspend leads to
build errors, so only set CONFIG_ARCH_SUSPEND_POSSIBLE if we have a CPU
selected which supports suspend.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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CONFIG_PM is now set whenever we support either runtime PM in addition
to suspend and hibernate. This causes build errors when runtime PM is
enabled on a platform, but the CPU does not have the appropriate support
for suspend.
So, switch this code to use CONFIG_PM_SLEEP rather than CONFIG_PM to
allow runtime PM to be enabled without causing build errors.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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Remove call to the old GPIO init function.
Fix old MPP control offset value.
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Acked-by: Saeed Bishara <saeed.bishara@gmail.com>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
(cherry picked from commit dc7b602dd481cad61fc4f18874bbdc5b04b5ee3e)
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This patchset adds support for OMAP4 MPU DVFS with following changes
- add vdd information for omap4
- enable all relevant OPPs for MPU VDD
- define and register get_rate and set_rate with DVFS layer
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch adds support for DVFS in cpufreq driver by replacing clock api with
DVFS api.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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On OMAP SMP configuartion, both processors share the voltage
and clock. So both CPUs needs to be scaled together and hence
needs software co-ordination.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
cc: Vishwanath BS <vishwanath.bs@ti.com>
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This patch is an attempt to cleanup the #ifdeferry in the
omap cpufreq drivers.
The split betwenn omap1 and omap2plus is logical because
- omap1 doesn't support opp layer.
- omap1 build is seperate from omap2plus.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Vishwanath BS <vishwanath.bs@ti.com>
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Add an alias clock node for cpu clock control on all OMAP2PLUS devices.
The intention is avoid cpu_is_xxxx() checks in the common cpufreq driver.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This reverts commit 7feb1d6505144376a since there is another patch set for
omap cpufreq changes at https://patchwork.kernel.org/patch/589081/
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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Add Documentation for DVFS Framework
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch enables Smartreflex and Cpu Freq in the
omap2plus defconfig.
Signed-off-by: Thara Gopinath <thara@ti.com>
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RIght now voltage layer is initialized as part of core init which is too late
for devices to register with voltage domain as part of hwmod init.
So moving voltage layer initialization as part of common infrastructure init.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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In OMAP3, for perfomrance reasons when VDD1 is at voltage above
1.075V, VDD2 should be at 1.15V for perfomrance reasons. This
patch introduce this cross VDD dependency for OMAP3 VDD1.
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch adds voltage domain info in the relevant
device hwmod structures so as to enable OMAP3 DVFS
support.
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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Changes in the omap cpufreq driver for DVFS support.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch also introduces omap3_mpu_set_rate, omap3_iva_set_rate,
omap3_l3_set_rate, omap3_mpu_get_rate, omap3_iva_get_rate,
omap3_l3_get_rate as device specific set rate and get rate
APIs for OMAP3 mpu, iva and l3_main devices. This patch also
calls into omap_device_populate_rate_fns during system init to register
various set_rate and get_rate APIs with the omap device layer
Signed-off-by: Thara Gopinath <thara@ti.com>
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This patch disables smartreflex for a particular voltage
domain when the the voltage domain and the devices belonging
to it is being scaled and re-enables it back once the scaling
is done.
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch adds omap_device_scale API which can be used to generic
device rate scaling.
Based on original patch from Thara.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Thara Gopinath <thara@ti.com>
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There could be dependencies between various voltage domains for
maintaining system performance or hardware limitation reasons
like VDD<X> should be at voltage v1 when VDD<Y> is at voltage v2.
This patch introduce dependent vdd information structures in the
voltage layer which can be used to populate these dependencies
for a voltage domain. This patch also adds support to scale
the dependent vdd and the scalable devices belonging to it
during the scaling of a main vdd through omap_voltage_scale.
As part of this, some of the voltage layer structure definitions are moved from
voltage.c to voltage.h as it needs to be used in the dvfs layer for dependency
voltage handling.
Based on original patch from Thara.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Thara Gopinath <thara@ti.com>
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This patch introduces an API to perform DVFS for a given voltage domain.
It takes omap_vdd_dvfs_info pointer as input parameter, computes the highest
requested voltage for that vdd and scales all the devices in that vdd to the
requested frequency along with voltage scaling.
Based on original patch from Thara.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Thara Gopinath <thara@ti.com>
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This patch extends the omap_device structure to contain pointers to scale the
operating rate of the device and to retrieve the operating rate of the device.
This patch also adds the three new APIs in the omap device layer
namely omap_device_set_rate that can be called to set a new operating
rate for a device, omap_device_get_rate that can be called to retrieve
the operating frequency for a device and omap_device_register_dvfs_callbacks
to register the device specific set_rate and get_rate functions.
The omap_device_set_rate and omap_device_get_rate does some routine error
checks and finally calls into the device specific set_rate
and get_rate APIs populated through omap_device_populate_rate_fns.
Signed-off-by: Thara Gopinath <thara@ti.com>
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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This patch introduces accessory APIs for DVFS.
Data structures added:
1. omap_dev_user_list: This structure maintains list of frequency requests per
device basis. When a device needs to be scaled to a particular frequency,
This list is searched to find the maximum request for a given device.
If noone has placed any request, device frequency is obtained from device
opp table.
2. omap_vdd_dev_list: This strcucture stores device list per vdd basis.
Whenever a device is registered with a vdd, it is added to this list.
3. omap_vdd_user_list: User list of devices associated with each voltage domain
instance. The user list is implemented using plist structure with priority
node populated with the voltage values.
4. omap_vdd_dvfs_info: This structure is used to abstract DVFS related
information per VDD basis. It holds pointer to corresponding vdd's
voltagedomain instance and pointer to user list.
Following APIs have been added to operate on above data structures:
1. omap_dvfs_add_vdd_user - API to add a user into omap_vdd_user_list
2. omap_vdd_user_list - API to remove a user from omap_vdd_user_list
3. omap_dvfs_register_device - API to register a device with vdd
4. omap_dvfs_add_freq_request - API to add a frequency request into
omap_dev_user_list
5. omap_dvfs_remove_freq_request - API to remove a frequency request from
omap_dev_user_list
6. omap_dvfs_find_voltage - API to find the opp corresponding to given voltage
DVFS layer is initialized and basic data structures are allocated and
initialized as part of this.
This patch is based on Thara's previous DVFS implementation, but with major
rework.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Thara Gopinath <thara@ti.com>
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DVFS layer will use Voltage layer APIs. So move voltage layer header files to
plat-omap.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
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git://git.secretlab.ca/git/linux-2.6 into linaro-2.6.38
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This patch add support for the Genesi Efika MX Smarttop and Smartbook,
the Freescale mx51 babbage board, and the Freescale mx53 loco board
Signed-off-by: Jason Liu <jason.hui@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Enable basic device tree support for Gumstix Overo.
tested with Overo Tide COM and Tobi expansion board
Signed-off-by: Andy Doan <andy.doan@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Add documentation, make dt_match table __initdata, and include the
skeleton.dtsi file in the device tree.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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