ARM: imx: common: Move prototype outside the SMP block

Currently the imx_gpcv2_set_core1_pdn_pup_by_software() prototype is
guarded by the CONFIG_SMP symbol. This causes W=1 build warnings when
CONF

ARM: imx: common: Move prototype outside the SMP block

Currently the imx_gpcv2_set_core1_pdn_pup_by_software() prototype is
guarded by the CONFIG_SMP symbol. This causes W=1 build warnings when
CONFIG_SMP is not selected:

arch/arm/mach-imx/src.c:103:6: warning: no previous prototype for 'imx_gpcv2_set_core1_pdn_pup_by_software' [-Wmissing-prototypes]

Fix it by moving the imx_gpcv2_set_core1_pdn_pup_by_software() prototype
outside of the CONFIG_SMP block.

Fixes: e34645f45805 ("ARM: imx: add smp support for imx7d")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: add smp support for imx7d

Add SMP support for i.MX7D, including CPU hotplug support, for
systems where TFA is not present.

The motivation for bringing up the second i.MX7D core inside the

ARM: imx: add smp support for imx7d

Add SMP support for i.MX7D, including CPU hotplug support, for
systems where TFA is not present.

The motivation for bringing up the second i.MX7D core inside the kernel
is that legacy vendor bootloaders usually do not implement PSCI support.

This is a significant blocker for systems in the field that are running old
bootloader versions to upgrade to a modern mainline kernel version, as only
one CPU of the i.MX7D would be brought up.

Bring up the second i.MX7D core inside the kernel to make the migration
path to mainline kernel easier for the existing iMX7D users.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com> # Fix merge conflicts
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de> # heavy cleanup
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: avic: Convert to using IRQCHIP_DECLARE

Using IRQCHIP_DECLARE lets fw_devlink know that it should not wait for
these interrupt controllers to be populated as struct devices. Without
this ch

ARM: imx: avic: Convert to using IRQCHIP_DECLARE

Using IRQCHIP_DECLARE lets fw_devlink know that it should not wait for
these interrupt controllers to be populated as struct devices. Without
this change, fw_devlink=on will make the consumers of these interrupt
controllers wait for the struct device to be added and thereby block the
consumers' probes forever. Converting to IRQCHIP_DECLARE addresses boot
issues on imx25 with fw_devlink=on that were reported by Martin.

This also removes a lot of boilerplate code.

Fixes: e590474768f1 ("driver core: Set fw_devlink=on by default")
Reported-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Tested-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

clk: imx: Move 'imx6sl_set_wait_clk()'s prototype out to accessible header

Fixes the following W=1 kernel build warning(s):

drivers/clk/imx/clk-imx6sl.c:156:6: warning: no previous prototype for ‘

clk: imx: Move 'imx6sl_set_wait_clk()'s prototype out to accessible header

Fixes the following W=1 kernel build warning(s):

drivers/clk/imx/clk-imx6sl.c:156:6: warning: no previous prototype for ‘imx6sl_set_wait_clk’ [-Wmissing-prototypes]

Cc: Russell King <linux@armlinux.org.uk>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: Remove remnant board file support pieces

Since i.MX board files are gone, remove some remnant pieces of
board file support.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arn

ARM: imx: Remove remnant board file support pieces

Since i.MX board files are gone, remove some remnant pieces of
board file support.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx3: Remove imx3 soc_init()

imx31_soc_init() and imx35_soc_init() were only used by i.MX31/35 board
files. Since the board files users are gone, it is safe to remove
imx3 soc_init() functions.

ARM: imx3: Remove imx3 soc_init()

imx31_soc_init() and imx35_soc_init() were only used by i.MX31/35 board
files. Since the board files users are gone, it is safe to remove
imx3 soc_init() functions.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx27: Get rid of mm-imx27.c

Get rid of mm-imx27.c and move its code to the mach-imx27.c file.

This aligns with other i.MX SoC code.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by

ARM: imx27: Get rid of mm-imx27.c

Get rid of mm-imx27.c and move its code to the mach-imx27.c file.

This aligns with other i.MX SoC code.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx27: Remove imx27_soc_init()

imx27_soc_init() was only used by i.MX27 board files. Since the
board files users are gone, it is safe to remove imx27_soc_init() too.

Signed-off-by: Fabio Estev

ARM: imx27: Remove imx27_soc_init()

imx27_soc_init() was only used by i.MX27 board files. Since the
board files users are gone, it is safe to remove imx27_soc_init() too.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: use device_initcall for imx_soc_device_init

This is preparation to move imx_soc_device_init to drivers/soc/imx/

There is no reason to must put dt devices under /sys/devices/soc0,
they cou

ARM: imx: use device_initcall for imx_soc_device_init

This is preparation to move imx_soc_device_init to drivers/soc/imx/

There is no reason to must put dt devices under /sys/devices/soc0,
they could also be under /sys/devices/platform, so we could
pass NULL as parent when calling of_platform_default_populate.

Following soc-imx8.c soc-imx-scu.c using device_initcall, need
to change return type to int type for imx_soc_device_init.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: build v7_cpu_resume() unconditionally

This function is not only needed by the platform suspend code, but is also
reused as the CPU resume function when the ARM cores can be powered down
co

ARM: imx: build v7_cpu_resume() unconditionally

This function is not only needed by the platform suspend code, but is also
reused as the CPU resume function when the ARM cores can be powered down
completely in deep idle, which is the case on i.MX6SX and i.MX6UL(L).

Providing the static inline stub whenever CONFIG_SUSPEND is disabled means
that those platforms will hang on resume from cpuidle if suspend is disabled.

So there are two problems:

- The static inline stub masks the linker error
- The function is not available where needed

Fix both by just building the function unconditionally, when
CONFIG_SOC_IMX6 is enabled. The actual code is three instructions long,
so it's arguably ok to just leave it in for all i.MX6 kernel configurations.

Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

ARM: imx: add i.MX7ULP cpuidle support

This patch adds cpuidle support for i.MX7ULP, 3 cpuidle
states supported as below:

1. WFI, just ARM wfi;
2. WAIT mode, mapped to SoC's partial stop mode #3;
3

ARM: imx: add i.MX7ULP cpuidle support

This patch adds cpuidle support for i.MX7ULP, 3 cpuidle
states supported as below:

1. WFI, just ARM wfi;
2. WAIT mode, mapped to SoC's partial stop mode #3;
3. STOP mode, mapped to SoC's partial stop mode #1.

In WAIT mode, system clock and bus clock will be enabled;
In STOP mode, system clock and bus clock will be disabled.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: add initial support for imx7ulp

The i.MX 7ULP family of processors features NXP's advanced implementation
of the Arm Cortex-A7 core, the Arm Cortex-M4 core, as well as a 3D and 2D
Graphics

ARM: imx: add initial support for imx7ulp

The i.MX 7ULP family of processors features NXP's advanced implementation
of the Arm Cortex-A7 core, the Arm Cortex-M4 core, as well as a 3D and 2D
Graphics Processing Units (GPUs).

This patch aims to add an initial support for imx7ulp. Note that we need
configure power mode to Partial Stop mode 3 with system/bus clock enabled
first as the default enabled STOP mode will gate off system/bus clock when
execute WFI in MX7ULP SoC.

And there's still no MXC_CPU_IMX7ULP IDs read from register as ULP has no
anatop as before. So we encode one with 0xff in reverse order in case new
ones will be in the future.

Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: mx5: Set the DBGEN bit in ARM_GPC register

On i.MX51/i.MX53 it is necessary to set the DBGEN bit in
ARM_GPC register in order to turn on the debug clocks.

The DBGEN bit of ARM_GPC register has

ARM: mx5: Set the DBGEN bit in ARM_GPC register

On i.MX51/i.MX53 it is necessary to set the DBGEN bit in
ARM_GPC register in order to turn on the debug clocks.

The DBGEN bit of ARM_GPC register has the following description
in the i.MX53 Reference Manual:

"This allows the user to manually activate clocks within the debug
system. This register bit directly controls the platform's dbgen_out
output signal which connects to the DAP_SYS to enable all debug clocks.
Once enabled, the clocks cannot be disabled except by asserting the
disable_trace input of the DAP_SYS."

Based on a previous patch from Sebastian Reichel.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: add L2 page power control for GPC

Some platforms like i.MX6UL/i.MX6SLL have L2
page power control in GPC, it needs to be
disabled if ARM is power gated and L2 is NOT
flushed, add GPC inter

ARM: imx: add L2 page power control for GPC

Some platforms like i.MX6UL/i.MX6SLL have L2
page power control in GPC, it needs to be
disabled if ARM is power gated and L2 is NOT
flushed, add GPC interface to control it.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: remove inexistant EPIT timer init

i.MX EPIT timer has been removed but not the init function declaration.

Signed-off-by: Clément Peron <clement.peron@devialet.com>
Signed-off-by: Shawn Gu

ARM: imx: remove inexistant EPIT timer init

i.MX EPIT timer has been removed but not the init function declaration.

Signed-off-by: Clément Peron <clement.peron@devialet.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: remove unused imx3 pm definitions

Remove the defintion of mx3_cpu_lp_set(), this function is not
implemented anywhere. Remove then mx3_cpu_pwr_mode enum as well,
it was used only as parame

ARM: imx: remove unused imx3 pm definitions

Remove the defintion of mx3_cpu_lp_set(), this function is not
implemented anywhere. Remove then mx3_cpu_pwr_mode enum as well,
it was used only as parameter of mx3_cpu_lp_set().

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: clk: imx31: properly init clocks for machines with DT

Clock initialization for i.MX31 powered machines with DT support
should be done by a call of an init function registered with
CLK_OF_DECLAR

ARM: clk: imx31: properly init clocks for machines with DT

Clock initialization for i.MX31 powered machines with DT support
should be done by a call of an init function registered with
CLK_OF_DECLARE() in common clock framework.

The change converts exported mx31_clocks_init_dt() into a static
initialization function registered by CLK_OF_DECLARE().

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: rename imx6q_set_int_mem_clk_lpm() function

Let's rename the function imx6q_set_int_mem_clk_lpm()
to imx6_set_int_mem_clk_lpm() since it's actually
common for all i.MX6 SoCs.

Signed-off-b

ARM: imx: rename imx6q_set_int_mem_clk_lpm() function

Let's rename the function imx6q_set_int_mem_clk_lpm()
to imx6_set_int_mem_clk_lpm() since it's actually
common for all i.MX6 SoCs.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: i.MX: Remove i.MX1 non-DT support

This patch removes registration helpers and support files,
used for non-DT i.MX1 targets.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sh

ARM: i.MX: Remove i.MX1 non-DT support

This patch removes registration helpers and support files,
used for non-DT i.MX1 targets.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: rework mx27_pm_init() call

mx27_pm_init() uses its own initcall, unlike all of the other
functions like it. Replacing the initcall with a .init_late()
callback makes imx27 more like the ot

ARM: imx: rework mx27_pm_init() call

mx27_pm_init() uses its own initcall, unlike all of the other
functions like it. Replacing the initcall with a .init_late()
callback makes imx27 more like the others and lets us remove
the last caller of cpu_is_mx27().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: remove cpu_is_mx1 check

There is only one call site for this, and it's easily replaced
by initializing the reset value at boot time.

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

ARM: imx: remove cpu_is_mx1 check

There is only one call site for this, and it's easily replaced
by initializing the reset value at boot time.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: imx: Use IRQCHIP_DECLARE for TZIC

Remove boilerplate code by using IRQCHIP_DECLARE macro.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

ARM: mx25: Add basic suspend/resume support

Tested basic suspend/resume on a mx25pdk:

$ echo enabled > /sys/class/tty/ttymxc0/power/wakeup
$ echo mem > /sys/power/state

Then press any key in the s

ARM: mx25: Add basic suspend/resume support

Tested basic suspend/resume on a mx25pdk:

$ echo enabled > /sys/class/tty/ttymxc0/power/wakeup
$ echo mem > /sys/power/state

Then press any key in the serial console and the system wakes up.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

show more ...

ARM: use const and __initconst for smp_operations

These smp_operations structures are not over-written, so add "const"
qualifier and replace __initdata with __initconst.

Also, add "static" where it

ARM: use const and __initconst for smp_operations

These smp_operations structures are not over-written, so add "const"
qualifier and replace __initdata with __initconst.

Also, add "static" where it is possible.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org> # qcom part
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Wei Xu <xuwei5@hisilicon.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

show more ...