arm: nomadik: drop selecting obsolete CLKSRC_NOMADIK_MTU_SCHED_CLOCK

Commit 85b6fcadcf66 ("clocksource/drivers/ux500: Drop Ux500 custom
SCHED_CLOCK") removes a sched_clock workaround and its corresp

arm: nomadik: drop selecting obsolete CLKSRC_NOMADIK_MTU_SCHED_CLOCK

Commit 85b6fcadcf66 ("clocksource/drivers/ux500: Drop Ux500 custom
SCHED_CLOCK") removes a sched_clock workaround and its corresponding
config CLKSRC_NOMADIK_MTU_SCHED_CLOCK. Since then, selecting
CLKSRC_NOMADIK_MTU_SCHED_CLOCK in ./arch/arm/mach-nomadik/Kconfig has no
effect and ./scripts/checkkconfigsymbols.py warns:

CLKSRC_NOMADIK_MTU_SCHED_CLOCK
Referencing files: arch/arm/mach-nomadik/Kconfig

Simply drop selecting the obsolete CLKSRC_NOMADIK_MTU_SCHED_CLOCK.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20220410145623.2620380-1-linus.walleij@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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ARM: rework endianess selection

Choosing big-endian vs little-endian kernels in Kconfig has not worked
correctly since the introduction of CONFIG_ARCH_MULTIPLATFORM a long
time ago.

The problems is

ARM: rework endianess selection

Choosing big-endian vs little-endian kernels in Kconfig has not worked
correctly since the introduction of CONFIG_ARCH_MULTIPLATFORM a long
time ago.

The problems is that CONFIG_BIG_ENDIAN depends on
ARCH_SUPPORTS_BIG_ENDIAN, which can set by any one platform
in the config, but would actually have to be supported by all
of them.

This was mostly ok for ARMv6/ARMv7 builds, since these are BE8 and
tend to just work aside from problems in nonportable device drivers.
For ARMv4/v5 machines, CONFIG_BIG_ENDIAN and CONFIG_ARCH_MULTIPLATFORM
were never set together, so this was disabled on all those machines
except for IXP4xx.

As IXP4xx can now become part of ARCH_MULTIPLATFORM, it seems better to
formalize this logic: all ARMv4/v5 platforms get an explicit dependency
on being either big-endian (ixp4xx) or little-endian (the rest). We may
want to fix ixp4xx in the future to support both, but it does not work
in LE mode at the moment.

For the ARMv6/v7 platforms, there are two ways this could be handled

a) allow both modes only for platforms selecting
'ARCH_SUPPORTS_BIG_ENDIAN' today, but only LE mode for the
others, given that these were added intentionally at some
point.

b) allow both modes everwhere, given that it was already possible
to build that way by e.g. selecting ARCH_VIRT, and that the
list is not an accurate reflection of which platforms may or
may not work.

Out of these, I picked b) because it seemed slighly more logical
to me.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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ARM: nomadik: select MFD_SYSCON

Since the Power Management Unit is using syscon to access a
set of necessary hardware muxing, let's select MFD_SYSCON for
the Nomadik subarchitecture.

Signed-off-by:

ARM: nomadik: select MFD_SYSCON

Since the Power Management Unit is using syscon to access a
set of necessary hardware muxing, let's select MFD_SYSCON for
the Nomadik subarchitecture.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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ARM: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB

This replaces:

- "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can
now be selected directly.

- "select ARCH_WANT_OPTIONAL_GPI

ARM: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB

This replaces:

- "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can
now be selected directly.

- "select ARCH_WANT_OPTIONAL_GPIOLIB" with no dependency: GPIOLIB
is now selectable by everyone, so we need not declare our
intent to select it.

When ordering the symbols the following rationale was used:
if the selects were in alphabetical order, I moved select GPIOLIB
to be in alphabetical order, but if the selects were not
maintained in alphabetical order, I just replaced
"select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB".

Cc: Michael Büsch <m@bues.ch>
Cc: arm@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

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ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by making platform opt

ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by making platform options a menuconfig entry containing any platform
specific config items.

[arnd: change OMAP part according to suggestion from
Tony Lindgren <tony@atomide.com>]

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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ARM: centralize common multi-platform kconfig options

Multi-platform requires various kconfig options to be selected, so
platforms don't need to select them individually.

Signed-off-by: Rob Herring

ARM: centralize common multi-platform kconfig options

Multi-platform requires various kconfig options to be selected, so
platforms don't need to select them individually.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>

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ARM: nomadik: switch to use the Nomadik I2C driver

Instead of using bit-banged I2C, let's use the actual I2C
driver in the kernel. Since the I2C block may be communicating
with things like the PMIC,

ARM: nomadik: switch to use the Nomadik I2C driver

Instead of using bit-banged I2C, let's use the actual I2C
driver in the kernel. Since the I2C block may be communicating
with things like the PMIC, we need to select it from the Kconfig
just like the bit-banged adapter is selected today. The rest of
the configuration for this driver can be done from the device
tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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ARM: nomadik: register clocksource from device tree

This switches the Nomadik platform to also registering its
clocksource from the device tree, removing unused support
code as we go along.

Acked-b

ARM: nomadik: register clocksource from device tree

This switches the Nomadik platform to also registering its
clocksource from the device tree, removing unused support
code as we go along.

Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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clocksource: nomadik-mtu: fix up clocksource/timer

The Nomadik clocksource driver has had a bad define making it
impossible to use it for sched_clock() for a while. Fix this
and also enable it for t

clocksource: nomadik-mtu: fix up clocksource/timer

The Nomadik clocksource driver has had a bad define making it
impossible to use it for sched_clock() for a while. Fix this
and also enable it for the Nomadik.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

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ARM: nomadik: hide MACH_NOMADIK_8815NHK in Kconfig

The nomadik multiplatform support made it possible to select
MACH_NOMADIK_8815NHK without selecting ARCH_NOMADIK, which leads
to build errors when

ARM: nomadik: hide MACH_NOMADIK_8815NHK in Kconfig

The nomadik multiplatform support made it possible to select
MACH_NOMADIK_8815NHK without selecting ARCH_NOMADIK, which leads
to build errors when we also select ARMv6/v7 targets. Adding the
ifdef here restores the intended behavior.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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ARM: nomadik: convert to multiplatform

This converts the Nomadik to run in multiplatform mode, including
the defconfig change. After this the "uImage" target in the kernel
tree will no longer work,

ARM: nomadik: convert to multiplatform

This converts the Nomadik to run in multiplatform mode, including
the defconfig change. After this the "uImage" target in the kernel
tree will no longer work, but we do not care about this. Instead
we generate the uImage from the zImage using mkimage or update
the bootloader to accept bootz. Some minor updates to the defconfig
are done as part of this.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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ARM: nomadik: delete old board files

The Device Tree support on Nomadik can do everything the old board
files could do, so delete the old board files and make the nomadik
select CONFIG_OF.

Signed-o

ARM: nomadik: delete old board files

The Device Tree support on Nomadik can do everything the old board
files could do, so delete the old board files and make the nomadik
select CONFIG_OF.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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ARM: plat-nomadik: move MTU, kill plat-nomadik

This moves the MTU timer driver from arch/arm/plat-nomadik
to drivers/clocksource and moves the header file to the
platform_data directory.

As this mo

ARM: plat-nomadik: move MTU, kill plat-nomadik

This moves the MTU timer driver from arch/arm/plat-nomadik
to drivers/clocksource and moves the header file to the
platform_data directory.

As this moves the last file being compiled to an object out
of arch/arm/plat-nomadik, we have to "turn off the light"
and delete the plat-nomadik directory, because it is not
allowed to have an empty Makefile in a plat-* directory.
This is probably also a desired side effect of depopulating
the arch/arm directory of drivers. Luckily we have just
deleted all the <plat/*> include files prior to this so
by moving the last one we may delete the directory.

After this all the Ux500 and Nomadik device drivers live
outside of the arch/arm hierarchy.

Cc: Alessandro Rubini <rubini@unipv.it>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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ARM: config: sort select statements alphanumerically

As suggested by Andrew Morton:

This is a pet peeve of mine. Any time there's a long list of items
(header file inclusions, kconfig entries,

ARM: config: sort select statements alphanumerically

As suggested by Andrew Morton:

This is a pet peeve of mine. Any time there's a long list of items
(header file inclusions, kconfig entries, array initalisers, etc) and
someone wants to add a new item, they *always* go and stick it at the
end of the list.

Guys, don't do this. Either put the new item into a randomly-chosen
position or, probably better, alphanumerically sort the list.

lets sort all our select statements alphanumerically. This commit was
created by the following perl:

while (<>) {
while (/\\\s*$/) {
$_ .= <>;
}
undef %selects if /^\s*config\s+/;
if (/^\s+select\s+(\w+).*/) {
if (defined($selects{$1})) {
if ($selects{$1} eq $_) {
print STDERR "Warning: removing duplicated $1 entry\n";
} else {
print STDERR "Error: $1 differently selected\n".
"\tOld: $selects{$1}\n".
"\tNew: $_\n";
exit 1;
}
}
$selects{$1} = $_;
next;
}
if (%selects and (/^\s*$/ or /^\s+help/ or /^\s+---help---/ or
/^endif/ or /^endchoice/)) {
foreach $k (sort (keys %selects)) {
print "$selects{$k}";
}
undef %selects;
}
print;
}
if (%selects) {
foreach $k (sort (keys %selects)) {
print "$selects{$k}";
}
}

It found two duplicates:

Warning: removing duplicated S5P_SETUP_MIPIPHY entry
Warning: removing duplicated HARDIRQS_SW_RESEND entry

and they are identical duplicates, hence the shrinkage in the diffstat
of two lines.

We have four testers reporting success of this change (Tony, Stephen,
Linus and Sekhar.)

Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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ARM: nomadik: enable PINCTRL_NOMADIK where needed

The nomadik gpio code has been converted to pinctrl, but the nomadik platform
still expects the old code to be present. Change it to use the new one

ARM: nomadik: enable PINCTRL_NOMADIK where needed

The nomadik gpio code has been converted to pinctrl, but the nomadik platform
still expects the old code to be present. Change it to use the new one instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

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gpio: move Nomadik GPIO driver to drivers/gpio

This moves the Nomadik GPIO driver out of arch/arm/plat-nomadik
and into the desired location indicated by the subsystem
maintainer.

Signed-off-by: Li

gpio: move Nomadik GPIO driver to drivers/gpio

This moves the Nomadik GPIO driver out of arch/arm/plat-nomadik
and into the desired location indicated by the subsystem
maintainer.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
[grant.likely: squashed with kconfig fixup]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

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ARM: 5969/1: nomadik: move gpio to plat-nomadik

Move the Nomadik GPIO driver to plat-nomadik so that it can also be used
on the Ux500 platform.

The mach-nomadik include/mach/gpio.h is replaced by o

ARM: 5969/1: nomadik: move gpio to plat-nomadik

Move the Nomadik GPIO driver to plat-nomadik so that it can also be used
on the Ux500 platform.

The mach-nomadik include/mach/gpio.h is replaced by one that includes
the one now in plat-nomadik, so that code doesn't need to include the
one in plat specifically, and can instead use <linux/gpio.h> as usual.

Acked-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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ARM: 5786/1: Introduce plat-nomadik, MTU code re-organization

Introduce the plat-nomadik folder for ST-Ericsson
machines including the existing nomadik 8815 architecture.
This also moves the existin

ARM: 5786/1: Introduce plat-nomadik, MTU code re-organization

Introduce the plat-nomadik folder for ST-Ericsson
machines including the existing nomadik 8815 architecture.
This also moves the existing MTU (MultiTimerUnit)
of nomadik 8815 to the proposed plat-nomadik and adds
HAS_MTU. The patch has been re-based to 2.6.32-rc6

Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] 5585/1: nomadik: add gpio-i2c devices

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.

[ARM] 5585/1: nomadik: add gpio-i2c devices

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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[ARM] 5590/1: Add basic support for ST Nomadik 8815 SoC and evaluation board

This patch adds the basic infrastructure for the Nomadik 8815
CPU and the "Nomadik Hardware Kit" NHK8815. This patch only

[ARM] 5590/1: Add basic support for ST Nomadik 8815 SoC and evaluation board

This patch adds the basic infrastructure for the Nomadik 8815
CPU and the "Nomadik Hardware Kit" NHK8815. This patch only
includes the serial console and core stuff, no drivers.

Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These file

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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ARM: nomadik: select MFD_SYSCON

Since the Power Management Unit is using syscon to access a
set of necessary hardware muxing, let's select MFD_SYSCON for
the Nomadik subarchitecture.

ARM: nomadik: select MFD_SYSCON

Since the Power Management Unit is using syscon to access a
set of necessary hardware muxing, let's select MFD_SYSCON for
the Nomadik subarchitecture.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

show more ...

ARM: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB

This replaces:

- "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can
now be selected directly.

- "s

ARM: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB

This replaces:

- "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can
now be selected directly.

- "select ARCH_WANT_OPTIONAL_GPIOLIB" with no dependency: GPIOLIB
is now selectable by everyone, so we need not declare our
intent to select it.

When ordering the symbols the following rationale was used:
if the selects were in alphabetical order, I moved select GPIOLIB
to be in alphabetical order, but if the selects were not
maintained in alphabetical order, I just replaced
"select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB".

Cc: Michael Büsch <m@bues.ch>
Cc: arm@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

show more ...

ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by mak

ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by making platform options a menuconfig entry containing any platform
specific config items.

[arnd: change OMAP part according to suggestion from
Tony Lindgren <tony@atomide.com>]

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

show more ...