ARM: EXYNOS: Use wfi macro in platform_do_lowpower

This patch is originally based on commit b3377d186572 ("ARM: 7064/1:
vexpress: Use wfi macro in platform_do_lowpower.")

Current Exynos CPU hotplug code includes a hardcoded WFI instruction,
in ARM encoding. When the kernel is compiled in Thumb-2 mode, this
is invalid and causes the machine to hang hard when a CPU is offlined.

Use wfi macro instead of the hardcoded WFI instruction.

Signed-off-by: Leela Krishna Amudala <leela.krishna@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: dts: fix reg sizes of GIC for exynos4

This patch fixes reg entry sizes in GIC node that were not
large enough to cover whole regions.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
clocksource: exynos_mct: Don't reset the counter during boot and resume

Unfortunately on some exynos systems, resetting the mct counter also
resets the architected timer counter.  This can cause problems if the
architected timer driver has already been initialized because the kernel
will think that the counter has wrapped around, causing a big jump in
printk timestamps and delaying any scheduled clock events until the
counter reaches the value it had before it was reset.

The kernel code makes no assumptions about the initial value of the mct
counter so there is no reason from a software perspective to clear the
counter before starting it.  This also fixes the problems described in
the previous paragraph.

Cc: Olof Johansson <olof@lixom.net>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: imx6sl: add missing enet clock for imx6sl

There's a enet clock gate missing in clock tree, thus add it.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: imx6sl: correct the fec ipg clock source

imx6sl fec MDIO clock source is from ipg 66Mhz, but the currect imx6sl
device tree define it as "enet_ref" clock (50Mhz), so the patch just
corrects imx6sl dtsi fec "ipg" clock.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: imx6: ventana: fix include typo

Fix typo and include the right dtsi file for the gw51xx board.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: imx6qdl-gw5xxx: Fix Linear Technology vendor prefix

The vendor prefix for Linear Technology should be lltc,
same as the NASDAQ symbol.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: imx6: ventana: correct gw52xx sgtl5000 clock source

Correct the invalid clock for the sgtl5000 audio codec on the GW52xx Ventana
baseboard.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: cubox-i: add support for PWM-driven front panel LED

The front panel LED on the Cubox-i is driven by one of the iMX6 PWM
channels, and is wired between the PWM output and supply.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: dts: hummingboard/cubox-i: move usb otg configuration to platform level

The configuration of the USB OTG is a platform configuration decision,
not a microsom decision.  Move this configuration out to the platform
level files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: STi: DT: Properly define sti-ethclk & stmmaceth for stih415/6

This patch fixes two problems: -

1) The device tree isn't currently providing sti-ethclk which is
required by the dwmac glue code to correctly configure the ethernet
PHY clock speed.

This means depending on what the bootloader/jtag has
configured this clock to, and what switch/hub the board is plugged
into you most likely will NOT successfully negotiate a ethernet link.

2) The stmmaceth clock was associated with the wrong clock. It was
referencing the PHY clock rather than the interconnect clock which
clocks the IP.

This patch also brings us closer to not having to boot the upstream
kernel with the clk_ignore_unused parameter.

Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
ARM: EXYNOS: fix pm code to check for cortex A9 rather than the SoC

We have an soc check to ensure that the scu and certain A9 specific
registers are not accessed on Exynos5250 (which is A15 based).
Rather than adding another soc specific check for 5420 let us test
for the Cortex A9 primary part number.

This resolves the below crash seen on exynos5420 during core switching
after the CPUIdle consolidation series was merged.

[  155.975589] [<c0013174>] (scu_enable) from [<c001b0dc>] (exynos_cpu_pm_notifier+0x80/0xc4)
[  155.983833] [<c001b0dc>] (exynos_cpu_pm_notifier) from [<c003c1b0>] (notifier_call_chain+0x44/0x84)
[  155.992851] [<c003c1b0>] (notifier_call_chain) from [<c007a49c>] (cpu_pm_notify+0x20/0x3c)
[  156.001089] [<c007a49c>] (cpu_pm_notify) from [<c007a564>] (cpu_pm_exit+0x20/0x38)
[  156.008635] [<c007a564>] (cpu_pm_exit) from [<c0019e98>] (bL_switcher_thread+0x298/0x40c)
[  156.016788] [<c0019e98>] (bL_switcher_thread) from [<c003842c>] (kthread+0xcc/0xe8)
[  156.024426] [<c003842c>] (kthread) from [<c000e438>] (ret_from_fork+0x14/0x3c)
[  156.031621] Code: ea017fec c0530a00 c052e3f8 c0012dcc (e5903000

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
ARM: mvebu: enable Dove SoC in mvebu_v7_defconfig

Since commit:

commit d93003e8e4e1fbbc8a06ec561a63f5aa105a4c45
Author: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Date:   Thu Apr 24 22:58:30 2014 +0100

    ARM: 8042/1: iwmmxt: allow to build iWMMXt on Marvell PJ4B

fixed the error that prevented Dove SoC from being built with
the rest of the mvebu SoCs, we can now add it to the defconfig.

In addition, this commit enables SERIAL_OF_PLATFORM, which is required
to have UART on some of the boards.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
tty: serial: msm: Fix section mismatch warning

WARNING: drivers/tty/built-in.o(.data+0x3544): Section mismatch in
reference from the variable msm_platform_driver to the function
.init.text:msm_serial_probe()
The variable msm_platform_driver references
the function __init msm_serial_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ARM: stih41x: Rename stih416-b2020-revE.dts to stih416-b2020e.dts

Two reasons for this rename.  Firstly, it removes the camel case
convention which isn't used by any other platform and secondly it
matches the naming convention for the internal kernel, which can
become annoying when flipping between the two.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Merge tag 'sti-fixes-for-v3.16-rc1' of git://git.stlinux.com/devel/kernel/linux-sti into fixes

Merge "STi: DT fixes for v3.16" from Maxime Coquelin:

Couple of DT fixes for STi platform issues discovered on V3.16-rc1.

The fixes included are:
 - Ethernet clocks were wrongly defined for STiH415/416 platforms
 - STiH416 B2020 revision E DTS file name contained uppercase, change to
   lowercase.

* tag 'sti-fixes-for-v3.16-rc1' of git://git.stlinux.com/devel/kernel/linux-sti: (2963 commits)
  ARM: stih41x: Rename stih416-b2020-revE.dts to stih416-b2020e.dts
  ARM: STi: DT: Properly define sti-ethclk & stmmaceth for stih415/6

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ARM: multi_v7_defconfig: Add QCOM GSBI driver

This patch adds QCOM GSBI config option to multi_v7_defconfig. Serial
driver on QCOM APQ8064 depends on GSBI driver, so without this patch
there is no serial console on IF6410 board using multi_v7_defconfig.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ARM: imx_v6_v7_defconfig: Enable CONFIG_IMX_IPUV3_CORE

Since commit 39b9004d1f (gpu: ipu-v3: Move i.MX IPUv3 core driver out of
staging) the ipuv3 core driver is no longer built bey default.

Select CONFIG_IMX_IPUV3_CORE so that the core ipuv3 code can be built again.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
ARM: mvebu: Fix broken SoC ID detection

Currently the mvebu boards need to detect the SoC revision in order to apply
some quirks needed to workaround issues found on I2C and thermal controllers
present only in very early SoC.

This detection requires PCI address translation to work, so we need to
explicitly select OF_ADDRESS_PCI.

This can be considered a partial revert of the following commit, that
wrongly removed the option selection:

commit 55400f3a1f89e39761f45c19f6e4235a329c400b
Author: Rob Herring <robh@kernel.org>
Date:   Tue Apr 22 14:15:52 2014 -0500

    ARM: mvebu: clean-up unneeded kconfig selects

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Link: https://lkml.kernel.org/r/1402347165-19988-1-git-send-email-ezequiel.garcia@free-electrons.com
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
ARM: mvebu: select ARM_CPU_SUSPEND for Marvell EBU v7 platforms

On Marvell Armada platforms, the PMSU (Power Management Service Unit)
controls a number of power management related activities, needed for
things like suspend/resume, CPU hotplug, cpuidle or even simply SMP.

Since cpuidle support was added for Armada XP, the pmsu.c file in
arch/arm/mach-mvebu/ calls the cpu_suspend() and cpu_resume() ARM
functions, which are only available when
CONFIG_ARM_CPU_SUSPEND=y. Therefore, configurations that have
CONFIG_ARM_CPU_SUSPEND disabled due to PM_SLEEP being disabled no
longer build properly, due to undefined references to cpu_suspend()
and cpu_resume().

To fix this, this patch simply ensures CONFIG_ARM_CPU_SUSPEND is
always enabled for Marvell EBU v7 platforms. Doing things in a more
fine-grained way would require a lot of #ifdef-ery in pmsu.c to
isolate the parts that use cpu_suspend()/cpu_resume(), and those parts
would anyway have been needed as soon as either one of suspend/resume,
CPU hotplug or cpuidle was enabled.

Reported-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1402488397-31381-1-git-send-email-thomas.petazzoni@free-electrons.com
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>