commit cee22a15 ("workqueues: Introduce new flag WQ_POWER_EFFICIENT
for power oriented workqueues") introduced the concept of power
efficient workqueues (4 years back), but it was never enabled in
upstream kernel configs.

Power efficient workqueues are simply marked as "unbound," so that jobs
queued to them can run on any CPU in the system. It leaves the target
CPU selection to the scheduler, which is the best place for such
decision making. This improves power efficiency for workqueues which are
otherwise pinned to a CPU.

Enable it for ARM64 platforms as ARM platforms were the main target for
the introduction of power efficient workqueues.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The hardware spinlock drivers now depend on HWSPINLOCK (instead of
selecting it), so we need to explicitly enable it after commit
35fc8a07 ("Make HWSPINLOCK a menuconfig to ease disabling")

Without HWSPINLOCK, various drivers are left with unsatisfied
dependencies and Qcom boards using shared memory based communication
to request regulators are failing to boot and mount rootfs.

Fix this by explicitly enabling HWSPINLOCK in defconfig.
Signed-off-by: NGeorgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

Compile the renesas sound and ak4613 drivers as modules to reduce the ARM64
kernel size. These modules are currently only used by Renesas platforms so
there should little risk of negative impact of this change on other users.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
[simon: consolidated two patches into one]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This reverts commits 2c0cba48 ("arm: sun8i: sunxi-h3-h5: Add dt node
for the syscon control module") to 2428fd0f ("arm64: defconfig: Enable
dwmac-sun8i driver on defconfig") and 3432a86e ("arm: sun8i:
orangepipc: use internal phy-mode") to 5a79b4f2 ("arm: sun8i:
orangepi-2: use internal phy-mode") that should be merged
through the arm-soc tree, and end up in merge conflicts and build failures.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This fixes a warning:
warning: override: reassigning to symbol SPI_MESON_SPIFC
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The EMAC is present on Qualcomm Technologies' server and some mobile
chips, and is used as the primary Ethernet interface.

Systems that have these SOCs typically have an Atheros 803x or
Marvell 88e1111 PHY in them, so enable those drivers too.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Now that the drivers are available, enable support for L2 and L3
performance monitoring Qualcomm Datacenter Technologies Centriq SoCs.
These PMU drivers provide support for performance optimization.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable EDAC (Error Detection and Correction) support for ARM64 server
systems that feature it, so that user space applications can be
notified of memory errors.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

ARM64 server platforms can support ACPI Platform Error Interface (APEI)
and Generic Hardware Error Source (GHES) features, so enable them.

Platforms which support the firmware-first RAS error reporting model
require APEI and GHES functionality for the OS to receive and report
error records provided by the platform.

PCIe AER functionality is required for PCIe AER errors to be properly
reported and recovered from.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Some ARM64 server systems support PCIe hotplug, so enable the options
for that.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

CONFIG_EFI_CAPSULE_LOADER allows the user to update the EFI firmware,
which is useful on ARM64 server platforms.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

NVME is non-volatile storage media attached via PCIe. NVME devices
typically have much higher potential throughput than other block
devices, like SATA, NVME is a must-have requirement for ARM64 based
servers.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The CPPC CPUFreq driver is used on many ACPI-based ARM64 server systems.
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This patch enable the SPI Communications Controller driver as module for the
Amlogic platform.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>

This patch enables the MEDIA Infrared RC Decoders and Meson Infrared
decoder for ARM64 defconfig.
These drivers are selected as modules by default.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
[khilman: make RC_CORE modular too]
Signed-off-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>

commit 7fa72cca ("ASoC: rsnd: add HDMI output support")
exchanged Renesas Sound driver's Kconfig selection
from SND_SIMPLE_CARD to SND_SIMPLE_CARD_UTILS, because of this,
defconfig doesn't select SND_SIMPLE_CARD today.
All Renesas platform needs SND_SIMPLE_CARD, Let's select it.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

ARCH_BRCMSTB was one of the few platforms that were not enabled by
default, since we are now adding more and more drivers relevant to that
platform get some proper build coverage.
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

ARCH_VULCAN (Broadcom Vulcan) has been discontinued and all its
dependencies have been moved to ARCH_THUNDER2. It can be dropped
from defconfig now.
Signed-off-by: NJayachandran C <jnair@caviumnetworks.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Enable the dwmac-sun8i ethernet driver as a module in the ARM64 defconfig.
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Enable some very core config options used on 64bit Rockchip socs.

As built-in driver enable the Rockchip spi driver as well as the
cros-ec-spi and cros-ec keyboard driver, as this may be helpful
in case an initrd does not work as expected and drops the user
into a shell. Another built-in is the fan53555 regulator driver,
as it and its register-compatible cousins Silergy syr827 and syr828
are often used on Rockchip socs as cpu-supply next to regular pmic.

The rest can be enabled as modules and contains the pcie host
controller and its phy, the sucessive approximation adc (saradc)
that gets often used for additional buttons on Rockchip boards
as well as the adc-keys Keyboard driver for these keys.

The cros-ec-pwm also can be a module, as it is normally only used to
drive display backlights as well as the Rockchip thermal controller
that allows to read the cpu and gpu temperatures and affect frequency
scaling if necessary.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Enable Qualcomm drivers needed to boot Dragonboard 410c with HDMI. This
enables support for clocks, regulators, and USB PHY.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: NRob Herring <robh@kernel.org>
[Olof: Turned off _RPM configs per follow-up email]
Signed-off-by: NOlof Johansson <olof@lixom.net>

Sync the defconfig with savedefconfig as config options change/move over
time.

Generated with the following commands:
make defconfig
make savedefconfig
cp defconfig arch/arm64/configs/defconfig
Signed-off-by: NRob Herring <robh@kernel.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

The Safexcel EIP197 cryptographic engine is used on some Marvell SoCs,
such as Armada 7040 and Armada 8040. Enable this driver as a module in
the ARM64 defconfig.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

This patch enables the driver for the SDHCI controller found on the
Marvell Armada 3700 and 7K/8K ARM64 SoCs.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

Kdump is enabled by default as kexec is.
Signed-off-by: NAKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

The arm64 defconfig covers the Allwinner A64 SoC boards quite well,
but USB support is not enabled.
Add the PHY config symbol to allow defconfig kernels to use USB.
Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

The MVPP2 network driver is used for the ARM64 Marvell Armada 7K and 8K
platforms, so enable it in the arm64 defconfig.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

Enable drivers specific to Exynos5433 and Exynos7:
1. MFD Low Power Audio SubSystem (LPASS),
2. DRM drivers (DECON display, outputs),
3. Drivers for video-related sub-blocks (JPEG, Multi Format Codec,
   GScaler).
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: NChanwoo Choi <cw00.choi@samsung.com>

We need to enable this controller so that we can switch the SD card's
pinmux over to it by default, which will improve storage performance.

Read access (dd with 64k blocks on rpi2):
  CONFIG_MMC_SDHCI_IPROC: 11-12 MB/s
  CONFIG_MMC_BCM2835:     19-20 MB/s

Differences on write access are pretty much in the noise.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NEric Anholt <eric@anholt.net>

Now that the Armada 37xx SoCs support the i2c pxa driver, enable it by
default.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

Now that the Armada 37xx SoCs support the mvneta driver, enable it by
default. It is especially useful when booting on an NFS root.
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

This enables the leds-pwm driver to support LEDs which are PWM-powered
(and thus dimmable). Additionally we have to enable the "default-on"
trigger - this was not required before because the gpio-leds driver has
a separate "default-state" property which can be used to enable the LED
by default.
Signed-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>

Enable SH Mobile I2C controller for use on R-Car Gen3 SoCs.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The PMULL based CRC32 implementation already contains code based on the
separate, optional CRC32 instructions to fallback to when operating on
small quantities of data. We can expose these routines directly on systems
that lack the 64x64 PMULL instructions but do implement the CRC32 ones,
which makes the driver that is based solely on those CRC32 instructions
redundant. So remove it.

Note that this aligns arm64 with ARM, whose accelerated CRC32 driver
also combines the CRC32 extension based and the PMULL based versions.
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: NMatthias Brugger <mbrugger@suse.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This will allow the default kernel build to boot on Cavium ThunderX2
CN99XX processors.
Signed-off-by: NJayachandran C <jnair@caviumnetworks.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable the NAND framework and the Denali NAND controller driver.
This NAND controller is used on UniPhier SoCs.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Enable the block layer support for MTD devices.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Enable the Cadence SD/SDIO/eMMC controller.  This is used on
Socionext UniPhier SoC family.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Since much more arm64 SoCs with numa nodes, it's better to enable
NUMA and NUMA_BALANCING to improve the performance on test.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

Signed-off-by: NZhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>