ARM: exynos_defconfig: Bring back explicitly wanted options

Few options KALLSYMS_ALL, SCSI, PM_DEVFREQ and mutex/spinlock debugging
were removed with savedefconfig because they were selected by othe

ARM: exynos_defconfig: Bring back explicitly wanted options

Few options KALLSYMS_ALL, SCSI, PM_DEVFREQ and mutex/spinlock debugging
were removed with savedefconfig because they were selected by other
options. However these are user-visible options and they might not be
selected in the future. Exactly this happened with commit 0e4a459f56c3
("tracing: Remove unnecessary DEBUG_FS dependency") removing the
dependency between DEBUG_FS and TRACING.

To avoid losing these options in the future, explicitly mention them in
defconfig.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Restore debugfs support

Commit 9f532d26c75c ("ARM: exynos_defconfig: Trim and reorganize with
savedefconfig") removed explicit enable line for CONFIG_DEBUG_FS, because
that fe

ARM: exynos_defconfig: Restore debugfs support

Commit 9f532d26c75c ("ARM: exynos_defconfig: Trim and reorganize with
savedefconfig") removed explicit enable line for CONFIG_DEBUG_FS, because
that feature has been selected by other enabled options: CONFIG_TRACING,
which in turn had been selected by CONFIG_PERF_EVENTS and
CONFIG_PROVE_LOCKING.

In meantime, commit 0e4a459f56c3 ("tracing: Remove unnecessary DEBUG_FS
dependency") removed the dependency between CONFIG_DEBUG_FS and
CONFIG_TRACING, so CONFIG_DEBUG_FS is no longer enabled in default builds.

Enable it again explicitly, as debugfs support is essential for various
automated testing tools.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable Arndale audio driver

Enable audio driver for Exynos5250 based Arndale boards to improve
testing coverage.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Si

ARM: exynos_defconfig: Enable Arndale audio driver

Enable audio driver for Exynos5250 based Arndale boards to improve
testing coverage.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable DMC driver

Enable driver for Exynos5422 Dynamic Memory Controller supporting
dynamic frequency and voltage scaling in Exynos5422 SoCs.

Signed-off-by: Lukasz Luba <l.lu

ARM: exynos_defconfig: Enable DMC driver

Enable driver for Exynos5422 Dynamic Memory Controller supporting
dynamic frequency and voltage scaling in Exynos5422 SoCs.

Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable AHCI-platform SATA driver

Exynos5250-based Arndale board has one eSATA port, so enable AHCI-platform
driver, which handles it.

Signed-off-by: Marek Szyprowski <m.szypr

ARM: exynos_defconfig: Enable AHCI-platform SATA driver

Exynos5250-based Arndale board has one eSATA port, so enable AHCI-platform
driver, which handles it.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: 8864/1: Add workaround for I-Cache line size mismatch between CPU cores

Some big.LITTLE systems have I-Cache line size mismatch between
LITTLE and big cores. This patch adds a workaround for pr

ARM: 8864/1: Add workaround for I-Cache line size mismatch between CPU cores

Some big.LITTLE systems have I-Cache line size mismatch between
LITTLE and big cores. This patch adds a workaround for proper I-Cache
support on such systems. Without it, some class of the userspace code
(typically self-modifying) might suffer from random SIGILL failures.

Similar workaround already exists for ARM64 architecture. I has been
added by commit 116c81f427ff ("arm64: Work around systems with mismatched
cache line sizes").

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

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ARM: exynos_defconfig: Enable Panfrost and Lima drivers

Enable support for Mali GPU with Panfrost and Lima drivers. Most of
Exynos chipsets come with Mali GPUs:
1. Mali 400 (Exynos3250, Exynos4210,

ARM: exynos_defconfig: Enable Panfrost and Lima drivers

Enable support for Mali GPU with Panfrost and Lima drivers. Most of
Exynos chipsets come with Mali GPUs:
1. Mali 400 (Exynos3250, Exynos4210, Exynos4412),
2. Mali T628 (Exynos542x).

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Trim and reorganize with savedefconfig

Trim and reorganize the defconfig with savedefconfig on latest
linux-next. The ARCH_EXYNOS3 is removed because it become the default.

ARM: exynos_defconfig: Trim and reorganize with savedefconfig

Trim and reorganize the defconfig with savedefconfig on latest
linux-next. The ARCH_EXYNOS3 is removed because it become the default.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos: Set MCPM as mandatory for Exynos542x/5800 SoCs

Support for Exynos5420/5422/5800 SoCs requires MCPM to properly boot all
CPU cores on all currectly supported platforms: Peach Pit (Exynos

ARM: exynos: Set MCPM as mandatory for Exynos542x/5800 SoCs

Support for Exynos5420/5422/5800 SoCs requires MCPM to properly boot all
CPU cores on all currectly supported platforms: Peach Pit (Exynos5420),
Odroid XU3/XU3lite/XU4/HC1 (Exynos5422) and Peach Pi (Exynos5800).
Without it some CPU cores fail to come online. Remove then the ability to
disable MCPM and make it mandatory when Exynos542x/5800 support is
enabled.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Add TOSHIBA TC358764 bridge driver

Add DRM bridge driver for TOSHIBA TC358764 chip used in LCD panel
for Samsung Exynos5250-based Arndale board.

Signed-off-by: Marek Szyprows

ARM: exynos_defconfig: Add TOSHIBA TC358764 bridge driver

Add DRM bridge driver for TOSHIBA TC358764 chip used in LCD panel
for Samsung Exynos5250-based Arndale board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Add MAX8952 regulator driver

Add regulator driver for MAX8952 PMIC chip used on Samsung UniversalC210
board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed

ARM: exynos_defconfig: Add MAX8952 regulator driver

Add regulator driver for MAX8952 PMIC chip used on Samsung UniversalC210
board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Add MAX8998 RTC and charger drivers

Add RTC and charger drivers for MAX8998 chip used on Samsung UniversalC210
board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.co

ARM: exynos_defconfig: Add MAX8998 RTC and charger drivers

Add RTC and charger drivers for MAX8998 chip used on Samsung UniversalC210
board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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arm/arm64: configs: Remove the MFD_ prefix for MFD_CROS_EC_I2C/SPI symbols.

The cros-ec I2C and SPI transport drivers have been moved from MFD
subsystem to platform/chrome, at the same time, the con

arm/arm64: configs: Remove the MFD_ prefix for MFD_CROS_EC_I2C/SPI symbols.

The cros-ec I2C and SPI transport drivers have been moved from MFD
subsystem to platform/chrome, at the same time, the config symbol has
been renamed and lost the MFD_ prefix, so update all configs to the new
config symbol name.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Benson Leung <bleung@chromium.org>

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ARM: exynos_defconfig: enable S6E63J0X03 panel driver

Add Samsung S6E63J0X03 DSI panel driver to enable support for display
panel on Exynos3250-based Samsung Rinato board.

Signed-off-by: Marek Szyp

ARM: exynos_defconfig: enable S6E63J0X03 panel driver

Add Samsung S6E63J0X03 DSI panel driver to enable support for display
panel on Exynos3250-based Samsung Rinato board.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable CONFIG_EXYNOS_IOMMU

EXYNOS_IOMMU is disabled in exynos_defconfig since it was known to cause
boot failures on Exynos Chromebooks. The recommendation was for IOMMU to
be

ARM: exynos_defconfig: Enable CONFIG_EXYNOS_IOMMU

EXYNOS_IOMMU is disabled in exynos_defconfig since it was known to cause
boot failures on Exynos Chromebooks. The recommendation was for IOMMU to
be enabled manually on systems as needed.

A recent exynos_drm change added a warning message when EXYNOS_IOMMU is
disabled. It is necessary to enable it to avoid the warning messages.
A few initial tests have shown that enabling EXYNOS_IOMMU might be safe
on Exynos Chrome-books.

Due to some other changes in the order of operations during boot
process, power domains are initialized very early and because of the
temporary lack of devices (which are not yet added to the system), are
turned off.

This practically stops FIMD for scanning framebuffer very early during
boot, before IOMMU gets initialized and "solves" the issue, which was
the reason to disable Exynos IOMMU by default on Exynos Snow Chromebooks.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
[krzk: Extend message with Marek Szyprowski's explanation]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable missing drivers for supported Exynos boards

Enable following drivers for recently merged devices:
- perf events and ARM PMU (Performance Measurement Unit) driver for al

ARM: exynos_defconfig: Enable missing drivers for supported Exynos boards

Enable following drivers for recently merged devices:
- perf events and ARM PMU (Performance Measurement Unit) driver for all
Exynos boards
- CEC and S5P CEC driver for all Exynos4 and Exynos5 boards with HDMI
- Sii9234 DRM HDMI-MHL bridge for Trats2
- dedicated Odroid ASoC machine driver for Odroid XU3/XU4

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable UAS support for Odroid HC1 board

Odroid HC1 board has built-in JMicron USB to SATA bridge, which supports
UAS protocol. Compile-in support for it (instead of enabling i

ARM: exynos_defconfig: Enable UAS support for Odroid HC1 board

Odroid HC1 board has built-in JMicron USB to SATA bridge, which supports
UAS protocol. Compile-in support for it (instead of enabling it as module)
to make sure that all built-in storage devices are available for rootfs.
The bridge itself also supports fallback to standard USB Mass Storage
protocol, but USB Mass Storage class doesn't bind to it when UAS is
compiled as module and modules are not (yet) available.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable locking test options

exynos_defconfig, beside serving as a reference config for Exynos-based
devices, is used by developers during regular development work.
Enabling op

ARM: exynos_defconfig: Enable locking test options

exynos_defconfig, beside serving as a reference config for Exynos-based
devices, is used by developers during regular development work.
Enabling options responsible for locking tests allows to discover bugs
in drivers and mach code earlier.

This enables:
1. Detection of sleeping in atomic sections (DEBUG_ATOMIC_SLEEP),
2. Full lockdep (DEBUG_LOCK_ALLOC and PROVE_LOCKING which makes other
lock debug entries unneeded),
3. Detection of soft, kernel lockups (SOFTLOCKUP_DETECTOR).

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>

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ARM: exynos_defconfig: Enable NLS_UTF8 and some crypto algorithms

Enable useful, but not essential components:
- NLS_UTF8, it might be used for accessing Microsoft-FS based storages,
- popular cry

ARM: exynos_defconfig: Enable NLS_UTF8 and some crypto algorithms

Enable useful, but not essential components:
- NLS_UTF8, it might be used for accessing Microsoft-FS based storages,
- popular crypto algorithms and transformations as modules.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>

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ARM: exynos_defconfig: Enable Bluetooth, mac80211, NFC and more USB drivers

Enable useful, but not essential, stacks and drivers as modules:
- Bluetooth,
- mac80211,
- NFC,
- some USB network ad

ARM: exynos_defconfig: Enable Bluetooth, mac80211, NFC and more USB drivers

Enable useful, but not essential, stacks and drivers as modules:
- Bluetooth,
- mac80211,
- NFC,
- some USB network adapters,
- USB storage,
- additional USB devices (printers etc).

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>

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ARM: exynos_defconfig: Save defconfig

Generate new defconfig to get rid of obsolete Kconfig entries:
- RFKILL_REGULATOR is gone;
- COMMON_CLK_MAX77802 was merged into COMMON_CLK_MAX77686;

Signed-

ARM: exynos_defconfig: Save defconfig

Generate new defconfig to get rid of obsolete Kconfig entries:
- RFKILL_REGULATOR is gone;
- COMMON_CLK_MAX77802 was merged into COMMON_CLK_MAX77686;

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

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ARM: defconfig: samsung: Re-order entries to match savedefconfig

Re-order entries just like savedefconfig would do so it will be easier
to review the changes before actual savedefconfig.

Signed-off

ARM: defconfig: samsung: Re-order entries to match savedefconfig

Re-order entries just like savedefconfig would do so it will be easier
to review the changes before actual savedefconfig.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

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ARM: exynos_defconfig: Enable Exynos RNG and user-space crypto API

Enable the new Exynos pseudo random number generator driver and
user-space API to access crypto algorithms and devices (not only RN

ARM: exynos_defconfig: Enable Exynos RNG and user-space crypto API

Enable the new Exynos pseudo random number generator driver and
user-space API to access crypto algorithms and devices (not only RNG).

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Increase CONFIG_CMA_SIZE_MBYTES to 96

Current CMA size of 64 Mbytes is right on the edge of being small when
several drivers need to allocate large CMA buffers.

For example,

ARM: exynos_defconfig: Increase CONFIG_CMA_SIZE_MBYTES to 96

Current CMA size of 64 Mbytes is right on the edge of being small when
several drivers need to allocate large CMA buffers.

For example, if the s5p-mfc driver needs to pre-allocate CMA memory to
decode a H.264 1080p video, then there won't be enough CMA memory left
for other drivers, such as the exynos-drm driver that may need to
allocate GEM buffers for the display manager.

Increasing CMA size to 96 Mbytes in exynos_defconfig addresses use-cases
such as these.

Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

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ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3

DYNAMIC_DEBUG is quite useful for debugging kernels and should not cause
noticeable performance regressions. It makes the kernel

ARM: exynos_defconfig: Enable DYNAMIC_DEBUG and get rid of old ext3

DYNAMIC_DEBUG is quite useful for debugging kernels and should not cause
noticeable performance regressions. It makes the kernel bigger (around 4%)
but this difference should not impact typical developer and reference
usage of this defconfig.

Sizes:
zImage-old: 4641496 bytes
zImage-new: 4811384 bytes

text data bss dec hex filename
7031229 2570916 327016 9929161 9781c9 vmlinux-old
7205921 2800052 327016 10332989 9dab3d vmlinux-new

Additionally, remove the EXT3_FS symbol because it is entirely replaced
by EXT4_FS.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>

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