ARM: meson: Drop unneeded select of COMMON_CLK

Support for Amlogic Meson SoCs depends on ARCH_MULTI_V7, and thus on
ARCH_MULTIPLATFORM.
As the latter selects COMMON_CLK, there is no need for ARCH_ME

ARM: meson: Drop unneeded select of COMMON_CLK

Support for Amlogic Meson SoCs depends on ARCH_MULTI_V7, and thus on
ARCH_MULTIPLATFORM.
As the latter selects COMMON_CLK, there is no need for ARCH_MESON to
select COMMON_CLK.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-amlogic@lists.infradead.org
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200121103722.1781-12-geert+renesas@glider.be
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

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>

show more ...

ARM: meson: remove COMMON_CLK_AMLOGIC selection

Selecting COMMON_CLK_AMLOGIC is not required as it is already selected
by the SoC clock controller driver

Signed-off-by: Jerome Brunet <jbrunet@bayli

ARM: meson: remove COMMON_CLK_AMLOGIC selection

Selecting COMMON_CLK_AMLOGIC is not required as it is already selected
by the SoC clock controller driver

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: select HAVE_ARM_TWD and ARM_GLOBAL_TIMER

The 32-bit Meson SoCs use multiple Cortex-A9 (Meson8 and Meson8m2) or
Cortex-A5 (Meson8b) CPU cores. These come with the "ARM global timer"
and "

ARM: meson: select HAVE_ARM_TWD and ARM_GLOBAL_TIMER

The 32-bit Meson SoCs use multiple Cortex-A9 (Meson8 and Meson8m2) or
Cortex-A5 (Meson8b) CPU cores. These come with the "ARM global timer"
and "Timer-Watchdog" (aka TWD, which provides both a per-cpu local timer
and watchdog).

Selecting ARM_GLOBAL_TIMER and HAVE_ARM_TWD allows us to add the timers
to the SoC.dtsi files.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: merge Kconfig symbol MACH_MESON8B into MACH_MESON8

Currently there are no differences between the MACH_MESON8 and
MACH_MESON8B Kconfig symbols (except the help text). Since both
platform

ARM: meson: merge Kconfig symbol MACH_MESON8B into MACH_MESON8

Currently there are no differences between the MACH_MESON8 and
MACH_MESON8B Kconfig symbols (except the help text). Since both
platforms are very similar (Meson8b being a slightly updated,
cost-reduced version of Meson8 which even shares some peripherals with
Meson8m2) no notable differences are expected in the future either.

Suggested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: add support for the Meson8m2 SoCs

Add the newly introduced compatible string for the Meson8m2 SoC.
The existing Meson8 Kconfig entry is updated to also provide support for
the Meson8m2 S

ARM: meson: add support for the Meson8m2 SoCs

Add the newly introduced compatible string for the Meson8m2 SoC.
The existing Meson8 Kconfig entry is updated to also provide support for
the Meson8m2 SoCs. The Meson8m2 SoC is mostly identical to the Meson8 SoC
with just a few peripherals being updated. Both SoCs currently
share the same pinctrl, clock and GPIO IRQ bindings. Thus the existing
Kconfig entry is re-used to avoid duplication (the only cost is building
a few extra DTBs).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: enable MESON_IRQ_GPIO also for MACH_MESON8

Now that the GPIO interrupt controller also supports the Meson8 SoCs we
can enable it via Kconfig.

Signed-off-by: Martin Blumenstingl <martin.

ARM: meson: enable MESON_IRQ_GPIO also for MACH_MESON8

Now that the GPIO interrupt controller also supports the Meson8 SoCs we
can enable it via Kconfig.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b

select MESON_IRQ_GPIO in Kconfig for Amlogic's meson8b SoC

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <

ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b

select MESON_IRQ_GPIO in Kconfig for Amlogic's meson8b SoC

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: Add SMP bringup code for Meson8 and Meson8b

This adds the necessary SMP-operations and startup code to use the
additional cores on the Amlogic Meson8/Meson8m2 (both are using the same
se

ARM: meson: Add SMP bringup code for Meson8 and Meson8b

This adds the necessary SMP-operations and startup code to use the
additional cores on the Amlogic Meson8/Meson8m2 (both are using the same
sequence) and Meson8b (using a slightly difference sequence) SoCs.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
[add Meson8/Meson8m2 support and allow taking CPU cores offline as well]
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

arm: meson: select the clock controller for Meson8

Select COMMON_CLK_MESON8B also for MACH_MESON8 since the Meson8b clock
controller driver can also be used on Meson8 SoCs now that we have a
separat

arm: meson: select the clock controller for Meson8

Select COMMON_CLK_MESON8B also for MACH_MESON8 since the Meson8b clock
controller driver can also be used on Meson8 SoCs now that we have a
separate compatible for it.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

arm: meson: explicitly select clk drivers

The AmLogic clock controller code is used by both arm and arm64
architectures. Explicitly select the core code for all Meson (32-bit
arm) builds, and also s

arm: meson: explicitly select clk drivers

The AmLogic clock controller code is used by both arm and arm64
architectures. Explicitly select the core code for all Meson (32-bit
arm) builds, and also select the Meson8b driver when that machine is
built.

Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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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 "depends on" for SoC configs instead of "if" after prompt

Many ARM sub-architectures use prompts followed by "if" conditional,
but it is wrong.

Please notice the difference between

co

ARM: use "depends on" for SoC configs instead of "if" after prompt

Many ARM sub-architectures use prompts followed by "if" conditional,
but it is wrong.

Please notice the difference between

config ARCH_FOO
bool "Foo SoCs" if ARCH_MULTI_V7

and

config ARCH_FOO
bool "Foo SoCs"
depends on ARCH_MULTI_V7

These two are *not* equivalent!

In the former statement, it is not ARCH_FOO, but its prompt that
depends on ARCH_MULTI_V7. So, it is completely valid that ARCH_FOO
is selected by another, but ARCH_MULTI_V7 is still disabled. As it is
not unmet dependency, Kconfig never warns. This is probably not what
you want.

The former should be used only when you need to do so, and you really
understand what you are doing. (In most cases, it should be wrong!)

For enabling/disabling sub-architectures, the latter is always correct.

As a good side effect, this commit fixes some entries over 80 columns
(mach-imx, mach-integrator, mach-mbevu).

[Arnd: I note that there is not really a bug here, according to
the discussion that followed, but I can see value in being consistent
and in making the lines shorter]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Jun Nie <jun.nie@linaro.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Krzysztof Halasa <khc@piap.pl>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

show more ...

ARM: meson: Enable Meson8b SoCs

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

ARM: meson: select PINCTRL_MESON and ARCH_REQUIRE_GPIOLIB

Make sure that the Meson pinctrl driver is built whenever Meson
support is enabled.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>

ARM: meson: select PINCTRL_MESON and ARCH_REQUIRE_GPIOLIB

Make sure that the Meson pinctrl driver is built whenever Meson
support is enabled.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Carlo Caione <carlo@endlessm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

show more ...

ARM: meson: enable L2 cache

This enables the L2 cache controller available in Amlogic SoCs.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off

ARM: meson: enable L2 cache

This enables the L2 cache controller available in Amlogic SoCs.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Carlo Caione <carlo@caione.org>

show more ...

ARM: meson: add meson8 support

Add a MACH_MESON8 symbol and add "amlogic,meson8" to the list of
compatible strings for the Meson DT machine to support devices based
on the Meson8 family of SoCs.

Si

ARM: meson: add meson8 support

Add a MACH_MESON8 symbol and add "amlogic,meson8" to the list of
compatible strings for the Meson DT machine to support devices based
on the Meson8 family of SoCs.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Carlo Caione <carlo@caione.org>

show more ...

ARM: meson: add basic support for MesonX SoCs

This patch adds the basic machine file for the MesonX SoCs. Only Meson6
is populated.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Arn

ARM: meson: add basic support for MesonX SoCs

This patch adds the basic machine file for the MesonX SoCs. Only Meson6
is populated.

Signed-off-by: Carlo Caione <carlo@caione.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

show more ...

ARM: meson: Drop unneeded select of COMMON_CLK

Support for Amlogic Meson SoCs depends on ARCH_MULTI_V7, and thus on
ARCH_MULTIPLATFORM.
As the latter selects COMMON_CLK, there is no

ARM: meson: Drop unneeded select of COMMON_CLK

Support for Amlogic Meson SoCs depends on ARCH_MULTI_V7, and thus on
ARCH_MULTIPLATFORM.
As the latter selects COMMON_CLK, there is no need for ARCH_MESON to
select COMMON_CLK.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-amlogic@lists.infradead.org
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200121103722.1781-12-geert+renesas@glider.be
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

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>

show more ...

ARM: meson: remove COMMON_CLK_AMLOGIC selection

Selecting COMMON_CLK_AMLOGIC is not required as it is already selected
by the SoC clock controller driver

Signed-off-by: Jerome B

ARM: meson: remove COMMON_CLK_AMLOGIC selection

Selecting COMMON_CLK_AMLOGIC is not required as it is already selected
by the SoC clock controller driver

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: select HAVE_ARM_TWD and ARM_GLOBAL_TIMER

The 32-bit Meson SoCs use multiple Cortex-A9 (Meson8 and Meson8m2) or
Cortex-A5 (Meson8b) CPU cores. These come with the "ARM global

ARM: meson: select HAVE_ARM_TWD and ARM_GLOBAL_TIMER

The 32-bit Meson SoCs use multiple Cortex-A9 (Meson8 and Meson8m2) or
Cortex-A5 (Meson8b) CPU cores. These come with the "ARM global timer"
and "Timer-Watchdog" (aka TWD, which provides both a per-cpu local timer
and watchdog).

Selecting ARM_GLOBAL_TIMER and HAVE_ARM_TWD allows us to add the timers
to the SoC.dtsi files.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: merge Kconfig symbol MACH_MESON8B into MACH_MESON8

Currently there are no differences between the MACH_MESON8 and
MACH_MESON8B Kconfig symbols (except the help text). Since b

ARM: meson: merge Kconfig symbol MACH_MESON8B into MACH_MESON8

Currently there are no differences between the MACH_MESON8 and
MACH_MESON8B Kconfig symbols (except the help text). Since both
platforms are very similar (Meson8b being a slightly updated,
cost-reduced version of Meson8 which even shares some peripherals with
Meson8m2) no notable differences are expected in the future either.

Suggested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: add support for the Meson8m2 SoCs

Add the newly introduced compatible string for the Meson8m2 SoC.
The existing Meson8 Kconfig entry is updated to also provide support for

ARM: meson: add support for the Meson8m2 SoCs

Add the newly introduced compatible string for the Meson8m2 SoC.
The existing Meson8 Kconfig entry is updated to also provide support for
the Meson8m2 SoCs. The Meson8m2 SoC is mostly identical to the Meson8 SoC
with just a few peripherals being updated. Both SoCs currently
share the same pinctrl, clock and GPIO IRQ bindings. Thus the existing
Kconfig entry is re-used to avoid duplication (the only cost is building
a few extra DTBs).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...

ARM: meson: enable MESON_IRQ_GPIO also for MACH_MESON8

Now that the GPIO interrupt controller also supports the Meson8 SoCs we
can enable it via Kconfig.

Signed-off-by: Martin B

ARM: meson: enable MESON_IRQ_GPIO also for MACH_MESON8

Now that the GPIO interrupt controller also supports the Meson8 SoCs we
can enable it via Kconfig.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

show more ...