Merge tag 'exynos-mcpm' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

Merge "Exynos MCPM support for v3.16" from Kukjin Kim:

- adding MCPM backend support for SMP secondary boot and core switching
on Samsung's Exynos5420.

Tested on exynos5420-smdk5420 and exynos5420 based chromebook (peach-pit)
using the "/dev/b.L_switcher" user interface. Secondary core boot-up has
also been tested on both the boards.

* tag 'exynos-mcpm' of http://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Add MCPM call-back functions
  ARM: dts: add CCI node for exynos5420
  ARM: EXYNOS: Add generic cluster power control functions
  ARM: EXYNOS: use generic exynos cpu power control functions
  ARM: EXYNOS: Add generic cpu power control functions for exynos SoCs
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge "Xilinx Zynq changes for v3.16" from Michal Simek:

arm: Xilinx Zynq cleanup patches for v3.16

- Add support for BIG Endian
- Add SOC_BUS support
- Sort Kconfig options
- Fix early console

* tag 'zynq-cleanup-for-3.16' of git://git.xilinx.com/linux-xlnx:
  ARM: zynq: Enable big-endian
  ARM: zynq: Fix uart0 early console virtual address
  clocksource: cadence_ttc: Use readl/writel_relaxed instead of __raw
  ARM: zynq: Sort Kconfig options
  ARM: zynq: Add support for SOC_BUS
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge "ARM: berlin: SoC changes for v3.16" from Sebastian Hesselbart:

Despite relatively young Berlin SoC support, we already have support
for a BG2Q SoC provided by Alexandre Belloni and Antoine Tenart. Also,
we gained support for DW gpio and a pinctrl driver.

* tag 'berlin-soc-3.16' of https://github.com/shesselba/linux-berlin:
  ARM: berlin: add the pinctrl dependency for the Marvell Berlin SoCs
  ARM: berlin: add the LIBGPIO as a dependency for the BG2Q
  ARM: berlin: add MACH_BERLIN_BG2Q symbol
  ARM: berlin: add Marvell Armada 1500 pro to Marvell doc
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'omap-for-v3.16/pm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Merge "ARM: omap pm changes for v3.16 merge window, resend" from Tony Lindgren:

PM related fixes for omap3 that were discovered during omap3
conversion to device tree. This series sets up the PMIC signaling
in a way where we can test for PM regressions easily by
looking at state of the the sys_clkreq and sys_off_mode pins.

Note that this series alone does not make omap3 PM to cut
off core voltage during off-idle, changes to twl4030-power.c
configurations are still needed. Those will be posted
separately.

* tag 'omap-for-v3.16/pm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Enable CPUidle in omap2plus_defconfig
  ARM: dts: Enable N900 keyboard sleep leds by default
  ARM: OMAP2+: Fix voltage scaling init for device tree
  ARM: dts: Configure omap3 twl4030 I2C4 pins by default
  ARM: OMAP3: Fix voltage control for deeper idle states
  ARM: OMAP3: Disable broken omap3_set_off_timings function
  ARM: OMAP3: Fix idle mode signaling for sys_clkreq and sys_off_mode
  ARM: dts: Fix omap serial wake-up when booted with device tree
  mfd: twl-core: Fix idle mode signaling for omaps when booted with device tree
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'omap-for-v3.16/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Pull "ARM: omap soc changes for v3.16 merge window" from Tony Lindgren:

SoC related changes for omaps.

* tag 'omap-for-v3.16/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: DRA752: add detection of SoC information
  ARM: OMAP2+: Remove suspend_set_ops from common pm late init
  ARM: OMAP2+: hwmod: OMAP5 DSS hwmod data
  ARM: omap4: hwmod_data: Clean up audio related structures (remove/merge them)
Signed-off-by: Olof Johansson <olof@lixom.net>

The sunxi reset controller code is only used with sun6i (a31).
After the platform has been split up into per-soc options, it's
now possible to build it without the reset controller code, so
the base platform init must not call into the reset driver
if that is turned off at compile time.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

People have appended new entries instead of inserting them at
the right location, so sort them.
Signed-off-by: Olof Johansson <olof@lixom.net>

With the newly introduced CPU_METHOD_OF_DECLARE is not necessary anymore
to reference the relevant smp_ops in the board file, but instead it can
simply be set by the enable-method property of the cpu nodes.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge "mach-bcm 3.16 soc updates" From Matt Porter:

* only show ARCH_BCM in multi v6/v7 configs
* enable ARM erratum 775420
* bcm_defconfig updates for pwm

* tag 'for-3.16/bcm-soc' of git://github.com/broadcom/mach-bcm:
  ARM: bcm_defconfig: Enable PWM and Backlight
  ARM: mach-bcm: add ARM_ERRATA_775420
  ARM: bcm: Restrict ARCH_BCM selection to ARCH_MULTI_V6_V7
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Conflicts:
	arch/arm/mach-bcm/Kconfig

Merge "Allwinner Core additions for 3.16, take 2" from Maxime Ripard:

  - Convert the A31 SMP operations to the CPU_METHOD_OF_DECLARE mechanism
  - Remove the reset code from the machine definition, that removes pretty much
    all the code left in mach-sunxi

* tag 'sunxi-core-for-3.16-2' of https://github.com/mripard/linux:
  ARM: sunxi: Remove init_machine callback
  ARM: sunxi: Remove reset code from the platform
  ARM: sun6i: Retire the smp field in A31 machine
  Documentation: dt: bindings: Document Allwinner A31 enable method
  ARM: sun6i: Use CPU_METHOD_OF_DECLARE
  Documentation: dt: bindings: Document ARM PSCI enable method
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge tag 'qcom-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom into next/soc

Merge "Qualcomm ARM Based SoC Updates for v3.16" from Kumar Gala:

* Enabling building pinctrl and AMBA bus support
* Clean up debug UART selection

* tag 'qcom-soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/linux-qcom:
  ARM: qcom: Select PINCTRL by default for ARCH_QCOM
  ARM: debug: qcom: make UART address selection configuration option
  ARM: qcom: Enable ARM_AMBA option for Qualcomm SOCs.

Conflicts:
	arch/arm/Kconfig.debug
	arch/arm/mach-qcom/Kconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Merge "mvebu SoC changes for v3.16 (incremental #2)" from Jason Cooper <jason@lakedaemon.net>:

 - mvebu
    - fix coherency on big-endian in -next
    - hardware IO coherency
    - L2/PCIe deadlock workaround
    - small coherency cleanups

* tag 'mvebu-soc-3.16-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: returns ll_get_cpuid() to ll_get_coherency_cpumask()
  ARM: mvebu: improve comments in coherency_ll.S
  ARM: mvebu: fix indentation of assembly instructions in coherency_ll.S
  ARM: mvebu: fix big endian booting after coherency code rework
  ARM: mvebu: coherency: fix registration of PCI bus notifier when !PCI
  ARM: mvebu: implement L2/PCIe deadlock workaround
  ARM: mvebu: use hardware I/O coherency also for PCI devices
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Patches from Anders Berg applied individually:

Here is version 4 of platform support for AXM5516 SoC.

The clk driver is now applied to clk-next. The rest should be ready for
arm-soc. Haven't got any response from the power/reset maintainers... I hope
this driver can be taken via arm-soc as well.

The AXM55xx family consists of devices that may contain up to 16 ARM Cortex-A15
cores (in a 4x4 cluster configuration). The cores within each cluster share an
L2 cache, and the clusters are connected to each other via a CCN-504 cache
coherent interconnect.

This machine requires CONFIG_ARM_LPAE enabled as all peripherals are located
above 4GB in the memory map.

* axxia/soc:
  ARM: dts: axxia: Add reset controller
  power: reset: Add Axxia system reset driver
  ARM: axxia: Adding defconfig for AXM55xx
  ARM: dts: Device tree for AXM55xx.
  ARM: Add platform support for LSI AXM55xx SoC
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Add the reset controller to the AXM5xx device tree.
Signed-off-by: Anders Berg <anders.berg@lsi.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Add Axxia (AXM55xx) SoC system reset driver. This driver handles only system
reboot (and not power-off).
Signed-off-by: Anders Berg <anders.berg@lsi.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Add a defconfig file for the LSI Axxia family of devices (CONFIG_ARCH_AXXIA).
Signed-off-by: Anders Berg <anders.berg@lsi.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Add device tree for the Amarillo validation board with an AXM5516 SoC.
Signed-off-by: Anders Berg <anders.berg@lsi.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The AXM55xx family consists of devices that may contain up to 16 ARM Cortex-A15
cores (in a 4x4 cluster configuration). The cores within each cluster share an
L2 cache, and the clusters are connected to each other via a CCN-504 cache
coherent interconnect.

This machine requires CONFIG_ARM_LPAE enabled as all peripherals are located
above 4GB in the memory map.
Signed-off-by: Anders Berg <anders.berg@lsi.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

The init_machine hook is now at its default value. We can remove it.

Even though the sun4i and sun7i machines are nothing more than generic machines
now, leave them in so that we won't have to add them back if needed, and so
that the machine is still displayed in /proc/cpuinfo.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

Now that reset is handled either by the watchdog driver for the sun4i, sun5i
and sun7i, and by a driver of its own for sun6i, we can remove it from the
platform code.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

Add missing PINCTRL selection.  This enables selection of pinctrollers for
Qualcomm processors.
Signed-off-by: Andy Gross <agross@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

Separate Qualcomm low-level debugging UART to two options.

DEBUG_MSM_UART is used in earlier non-multi platform arches,
like MSM7X00A, QSD8X50 and MSM7X30.

DEBUG_QCOM_UARTDM is used in multi-plafrom arches and have
embedded data mover.

Make DEBUG_UART_PHYS and DEBUG_UART_BASE user adjustable by
Kconfig menu.
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

As some of the IPs on Qualcomm SOCs are based on ARM PrimeCell IPs.
For example SDCC controller is PrimeCell MCI pl180. Adding this option will
give flexibility to reuse the existing drivers as it is without major
modifications.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

In the refactoring of the coherency fabric assembly code, a function
called ll_get_cpuid() was created to factorize common logic between
functions adding CPU to the SMP coherency group, enabling and
disabling the coherency.

However, the name of the function is highly misleading: ll_get_cpuid()
makes one think tat it returns the ID of the CPU, i.e 0 for CPU0, 1
for CPU1, etc. In fact, this is not at all what this function returns:
it returns a CPU mask for the current CPU, usable for the coherency
fabric configuration and control registers.

Therefore this commit renames this function to
ll_get_coherency_cpumask(), and adds additional comments on top of the
function to explain in more details what it does, and also how the
endianess issue is handled.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400762882-10116-5-git-send-email-thomas.petazzoni@free-electrons.comAcked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

This commit makes no functional change, it only improves a bit the
various code comments in mach-mvebu/coherency_ll.S, by fixing a few
typos and adding a few more details.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400762882-10116-4-git-send-email-thomas.petazzoni@free-electrons.comAcked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

This commit does not make any functional change, it only fixes the
indentation of a few assembly instructions in
arch/arm/mach-mvebu/coherency_ll.S.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400762882-10116-3-git-send-email-thomas.petazzoni@free-electrons.comAcked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

As part of the introduction of the cpuidle support for Armada XP, the
coherency code was significantly reworked, especially in the
coherency_ll.S file. However, when the ll_get_cpuid function was
created, the big-endian specific code that switches the endianess of
the register was not updated properly.

This patch fixes this code, and therefore makes big endian systems
bootable again.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400762882-10116-2-git-send-email-thomas.petazzoni@free-electrons.com
Fixes: 2e8a5942 ("ARM: mvebu: Split low level functions to manipulate HW coherency")
Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Kevin Hilman <khilman@linaro.org>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

Commit b0063aad ("ARM: mvebu: use hardware I/O coherency also for
PCI devices") added a reference to the pci_bus_type variable, but this
variable is only available when CONFIG_PCI is enabled. Therefore,
there is now a build failure in !CONFIG_PCI situations.

This commit fixes that by enclosing the entire initcall into a
IS_ENABLED(CONFIG_PCI) condition.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400598783-706-1-git-send-email-thomas.petazzoni@free-electrons.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>

The Marvell Armada 375 and Armada 38x SOCs, which use the Cortex-A9
CPU core, the PL310 cache and the Marvell PCIe hardware block are
affected a L2/PCIe deadlock caused by a system erratum when hardware
I/O coherency is used.

This deadlock can be avoided by mapping the PCIe memory areas as
strongly-ordered (note: MT_UNCACHED is strongly-ordered), and by
removing the outer cache sync done in software. This is implemented in
this patch by:

 * Registering a custom arch_ioremap_caller function that allows to
   make sure PCI memory regions are mapped MT_UNCACHED.

 * Adding at runtime the 'arm,io-coherent' property to the PL310 cache
   controller. This cannot be done permanently in the DT, because the
   hardware I/O coherency can only be enabled when CONFIG_SMP is
   enabled, in the current kernel situation.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1400165974-9059-4-git-send-email-thomas.petazzoni@free-electrons.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>

Merge tag 'tegra-for-3.16-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/soc

Merge "ARM: tegra: core code changes for 3.16" from Stephen Warren:

This branch contains just a single patch this time around. Thierry
enhanced Tegra's restart code to allow programming PMC scratch registers
to request specific behaviour after reboot. One of the most useful
options for mainline software is the ability to reboot directly into USB
recovery mode, which e.g. allows the bootloader to be reflashed.

* tag 'tegra-for-3.16-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  ARM: tegra: Support reboot modes
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'imx-soc-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc

Merge "ARM: imx: soc changes for 3.16" from Shawn Guo:

i.MX SoC changes for 3.16:
 - A few cleanups on mx21ads board file, which should make the later
   conversion to DT a little bit easier.
 - Add some missing clocks and drop unused clk lookups for i.MX1 and
   i.MX27 clock drivers
 - Add initial i.MX SoloX (imx6sx) SoC support
 - Remove mx51_babbage and mach-cpuimx51sd board files, as the
   equivalent DT support is ready for the boards
 - Clean up device tree timer initialization a little bit
 - Add missing i2c4 clock for i.MX6 DualLite/Solo
 - Add missing CKO clock i.MX25
 - Add shared gate clock support for i.MX specific clk_gate2
 - Add low-level debug support for SoC VF610
 - Some random code cleanups and defconfig updates

* tag 'imx-soc-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (33 commits)
  ARM: mx25: Add CLKO support
  ARM: i.MX1 clk: Remove clk_register_clkdev() for unused clocks
  ARM: i.MX1 clk: Add missing clocks
  ARM: imx: add basic imx6sx SoC support
  ARM: imx: add clock driver for imx6sx
  ARM: imx: add low-level debug support for imx6sx
  ARM: mx51: Remove mach-cpuimx51sd board file
  ARM: i.MX: Setup IRQ handler from IRQ driver
  ARM: i.MX27 pca100: remove deprecated IRQF_DISABLED
  ARM: imx/mxs defconfigs: add MTD_SPI_NOR (new dependency for M25P80)
  ARM: i.MX: Fix eMMa PrP resource size
  ARM: imx_v4_v5_defconfig: drop CONFIG_COMMON_CLK_DEBUG option
  ARM: i.MX27 clk: Remove clk_register_clkdev() for unused clocks
  ARM: i.MX27 clk: Add missing clocks for MSHC and RTIC
  ARM: imx6q: add the missing esai_ahb clock
  ARM: imx: add shared gate clock support
  ARM: imx: lock is always valid for clk_gate2
  ARM: imx: define struct clk_gate2 on our own
  ARM: i.MX: Remove #ifdef CONFIG_OF
  ARM: imx_v6_v7_defconfig: enable option CONFIG_LOCALVERSION_AUTO
  ...
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge "Allwinner SoCs core additions for 3.16" from Maxime Ripard:

Refactor the Kconfig options to have one Kconfig option per machine.

* tag 'sunxi-core-for-3.16' of https://github.com/mripard/linux:
  ARM: sunxi: select MFD_SUN6I_PRCM when sun6i arch support is enabled
  ARM: sunxi: Split the various SoCs support in Kconfig
Signed-off-by: Olof Johansson <olof@lixom.net>

Enable ARCH_SUPPORTS_BIG_ENDIAN in Kconfig.

zynq_secondary_trampoline is the first function
that is called on secondary CPU.
Reference:
"ARM: mcpm: fix big endian issue in mcpm startup code"
(sha1: 519ceb9f)

Fix early printk support. Based on:
"ARM: pl01x debug code endian fix"
(sha1: 76e3faf1)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Virtual address have to have the same offset within
a 2MB aligned section of virtual/phycial address space.

Fix uart0 virtual address to be align with physical one.
Also remove UART_SIZE which is completely unused.
Reported-by: Russ Smith <russells@google.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

For supporting ARM big-endian is necessary to use
proper IO endianess accessors.

Based on Ben Dooks BE guide.
Similar conversion is done here:
"mv_xor: use {readl, writel}_relaxed instead of __raw_{readl, writel}"
(sha1: 5733c38a)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Keep options sorted.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Provide information through SOC_BUS to user space.
Silicon revision is provided through devcfg device.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Merge "ARM: STi: SoC changes for v3.16" from Maxime Coquelin:

SoC changes for STi platforms
 - Add support for STiH407

* tag 'sti-soc-for-v3.16' of git://git.stlinux.com/devel/kernel/linux-sti:
  ARM: STi: Add STiH407 SoC support
Signed-off-by: Olof Johansson <olof@lixom.net>

Merge tag 'renesas-soc-cleanup-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc

Merge "Renesas ARM Based SoC soc-cleanup Updates for v3.16" from Simon Horman:

r8a7791 (R-Car H2) SoC and its Koelsch board and,
r8a7740 (R-Mobile A1) SoC and its Armadillo800eva board
* Set CPU clock frequency from OF nodes

* tag 'renesas-soc-cleanup-for-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Set clock frequency in HZ from OF nodes
  ARM: shmobile: Use shmobile_init_late() on r8a7740
  ARM: shmobile: Remove unused r8a7791_init_early()
  ARM: shmobile: Use r8a7791 DT CPU Frequency for Koelsch
  ARM: shmobile: Use r8a7791 DT CPU Frequency in common case
  ARM: shmobile: Remove unused r8a7740_init_delay()
  ARM: shmobile: Use r8a7740 DT CPU Frequency for Armadillo DT Ref
  ARM: shmobile: Use r8a7740 DT CPU Frequency in common case
  ARM: shmobile: Add r8a7740 Maximum CPU Frequency to DTS
Signed-off-by: Olof Johansson <olof@lixom.net>