clk: nomadik: correct struct name kernel-doc warning

Use the correct struct name for the kernel-doc notation to prevent
a kernel-doc warning:

clk-nomadik.c:148: warning: expecting prototype for str

clk: nomadik: correct struct name kernel-doc warning

Use the correct struct name for the kernel-doc notation to prevent
a kernel-doc warning:

clk-nomadik.c:148: warning: expecting prototype for struct clk_pll1. Prototype was for struct clk_pll instead

Fixes: ef6eb322ce57 ("clk: nomadik: implement the Nomadik clocks properly")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org
Link: https://lore.kernel.org/r/20221209002016.14776-1-rdunlap@infradead.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

show more ...

clk: nomadik: Add missing of_node_put()

In nomadik_src_init(), of_find_matching_node() will return a node
pointer with refcount incremented. We should use of_node_put() in
fail path or when it is no

clk: nomadik: Add missing of_node_put()

In nomadik_src_init(), of_find_matching_node() will return a node
pointer with refcount incremented. We should use of_node_put() in
fail path or when it is not used anymore.

Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220617014308.4001511-1-windhl@126.com
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

show more ...

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194

Based on 1 normalized pattern(s):

license terms gnu general public license gpl version 2

extracted by the scancode license scan

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194

Based on 1 normalized pattern(s):

license terms gnu general public license gpl version 2

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 161 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170027.447718015@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

show more ...

clk: nomadik: Change to use DEFINE_SHOW_ATTRIBUTE macro

Use macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
[sboyd@kernel.org: Rename show function to keep compiling]

clk: nomadik: Change to use DEFINE_SHOW_ATTRIBUTE macro

Use macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
[sboyd@kernel.org: Rename show function to keep compiling]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

show more ...

clk: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: Eugeniy P

clk: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

show more ...

clk: nomadik: Delete error messages for a failed memory allocation in two functions

The script "checkpatch.pl" pointed information out like the following.

WARNING: Possible unnecessary 'out of memo

clk: nomadik: Delete error messages for a failed memory allocation in two functions

The script "checkpatch.pl" pointed information out like the following.

WARNING: Possible unnecessary 'out of memory' message

Thus remove such statements here.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

show more ...

clk: nomadik: Use seq_puts() in nomadik_src_clk_show()

A string which did not contain a data format specification should be put
into a sequence. Thus use the corresponding function "seq_puts".

This

clk: nomadik: Use seq_puts() in nomadik_src_clk_show()

A string which did not contain a data format specification should be put
into a sequence. Thus use the corresponding function "seq_puts".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

show more ...

clk: nomadik: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these dri

clk: nomadik: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs.

Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

show more ...

clk: nomadik: Remove clk.h and clkdev.h includes

Clock provider drivers generally shouldn't include clk.h because
it's the consumer API. Remove the include here because this is a
provider driver. Th

clk: nomadik: Remove clk.h and clkdev.h includes

Clock provider drivers generally shouldn't include clk.h because
it's the consumer API. Remove the include here because this is a
provider driver. This driver also includes clkdev.h even though
it isn't used, so drop it too and add slab.h to make sure
everything still compiles.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

show more ...

drivers/clk: don't use module_init in clk-nomadik.c which is non-modular

The clk-nomadik.o is built for ARCH_NOMADIK -- which is bool, and
hence this code is either present or absent. It will never

drivers/clk: don't use module_init in clk-nomadik.c which is non-modular

The clk-nomadik.o is built for ARCH_NOMADIK -- which is bool, and
hence this code is either present or absent. It will never be
modular, so using module_init as an alias for __initcall can be
somewhat misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future. If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups. As __initcall gets
mapped onto device_initcall, our use of device_initcall
directly in this change means that the runtime impact is
zero -- it will remain at level 6 in initcall ordering.

Cc: Mike Turquette <mturquette@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

show more ...

clk: nomadik: fix multiplatform problem

The Nomadik debugfs screws up multiplatform boots if debugfs
is enabled on the multiplatform image, since it's a simple
initcall that is unconditionally execu

clk: nomadik: fix multiplatform problem

The Nomadik debugfs screws up multiplatform boots if debugfs
is enabled on the multiplatform image, since it's a simple
initcall that is unconditionally executed and reads from certain
memory locations.

Fix this by checking that the driver has been properly
initialized, so a base offset to the Nomadik SRC controller
exists, before proceeding to register debugfs files.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

show more ...

clk: nomadik: fix missing __init on nomadik_src_init

nomadik_src_init references __initconst sections but lacks an __init
itself. Add __init to fix the section mismatch.

Signed-off-by: Sebastian He

clk: nomadik: fix missing __init on nomadik_src_init

nomadik_src_init references __initconst sections but lacks an __init
itself. Add __init to fix the section mismatch.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

show more ...

clk: nomadik: declare OF clock provider

Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts nomadik clock
provider to make

clk: nomadik: declare OF clock provider

Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts nomadik clock
provider to make use of it and get rid of the mach specific clk init
call. As clocks require system reset controller base address to be
initialized each clock driver checks src_base and calls new
nomadik_src_init if required.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>

show more ...

clk: nomadik: move src init out of nomadik_clk_init

nomadik_clk_init currently also maps system reset controller base address
used by clocks and registers a reboot notifier. To allow further cleanup

clk: nomadik: move src init out of nomadik_clk_init

nomadik_clk_init currently also maps system reset controller base address
used by clocks and registers a reboot notifier. To allow further cleanup of
nomadik clk setup, this moves system reset controller setup from
nomadik_clk_init to its own function.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>

show more ...

clk: nomadik: set all timers to use 2.4 MHz TIMCLK

This fixes a regression for the Nomadik on the main system
timers.

The Nomadik seemed a bit slow and its heartbeat wasn't looking
healthy. And it

clk: nomadik: set all timers to use 2.4 MHz TIMCLK

This fixes a regression for the Nomadik on the main system
timers.

The Nomadik seemed a bit slow and its heartbeat wasn't looking
healthy. And it was not strange, because it has been connected
to the 32768 Hz clock at boot, while being told by the clock driver
that it was 2.4MHz. Actually connect the TIMCLK to 2.4MHz by
default as this is what we want for nice scheduling, clocksource
and clock event.

Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

show more ...

clk: nomadik: Fix incorrect placement of __initconst

__initconst should be placed between the variable name and equal
sign for the variable to be placed in the intended section.

Signed-off-by: Sach

clk: nomadik: Fix incorrect placement of __initconst

__initconst should be placed between the variable name and equal
sign for the variable to be placed in the intended section.

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

show more ...

clk: nomadik: implement the Nomadik clocks properly

The Nomadik clock implementation was a stub just using
fixed clocks.

This implements the clocks properly instead of relying
on them all being on

clk: nomadik: implement the Nomadik clocks properly

The Nomadik clock implementation was a stub just using
fixed clocks.

This implements the clocks properly instead of relying
on them all being on at boot and leaving them all on.

The PLLs are on the top locking to the main chrystal
oscillator, then the HCLK for the peripherals are
below PLL2.

The gated clocks are implemented with zero cells and
given the clock ID as a property of each node, so every
gate need to have its own node in the device tree.
This is because the gate registers contain both HCLK
gates and PCLK gates, where the latter has HCLK as
parent. As can be seen from the register layout, this
is a complete mixup, which means all these gates need
their own node to properly model parent/child relations
for PCLKs apart from the HCLKs.

This driver also adds a helpful debugfs file to inspect
the hardware state of the clock gates.

This is the end result in <debugfs>/clk/clk_summary
after applying a proper device tree:

ulpiclk 0 0 60000000
mxtal 3 3 19200000
pll2 1 1 864000000
clk48 3 3 48000000
rngcclk 1 1 48000000
usbmclk 0 0 48000000
mshcclk 0 0 48000000
mspclk3 0 0 48000000
x3dclk 0 0 48000000
skeclk 0 0 48000000
owmclk 0 0 48000000
mspclk2 0 0 48000000
mspclk1 0 0 48000000
uart2clk 0 0 48000000
ipbmcclk 0 0 48000000
ipi2cclk 0 0 48000000
usbclk 0 0 48000000
mspclk0 0 0 48000000
uart1clk 1 2 48000000
i2c1clk 0 0 48000000
i2c0clk 0 0 48000000
sdiclk 1 1 48000000
uart0clk 0 0 48000000
sspiclk 0 0 48000000
irdaclk 0 0 48000000
clk72 0 0 72000000
difclk 0 0 72000000
clcdclk 0 0 72000000
clk216 0 0 216000000
hsiclkrx 0 0 216000000
clk108 0 0 108000000
hsiclktx 0 0 108000000
clk27 0 0 27000000
pll1 1 1 264000000
hclk 3 3 264000000
hclkrng 1 1 264000000
hclkusbm 0 0 264000000
hclkcryp 0 0 264000000
hclkhash 0 0 264000000
hclk3d 0 0 264000000
hclkhpi 0 0 264000000
hclksva 0 0 264000000
hclksaa 0 0 264000000
hclkdif 0 0 264000000
hclkusb 0 0 264000000
hclkclcd 0 0 264000000
hclkdma1 0 0 264000000
hclksdram 0 0 264000000
hclksmc 1 1 264000000
hclkdma0 0 0 264000000
pclk 7 9 264000000
pclkmsp3 0 0 264000000
pclkmshc 0 0 264000000
pclkhsem 0 0 264000000
pclkske 0 0 264000000
pclkowm 0 0 264000000
pclkmsp2 0 0 264000000
pclkmsp1 0 0 264000000
pclkuart2 0 0 264000000
pclkxti 0 0 264000000
pclkhsi 0 0 264000000
pclkmsp0 0 0 264000000
pclkuart1 1 1 264000000
pclki2c1 0 0 264000000
pclki2c0 0 0 264000000
pclksdi 1 1 264000000
pclkuart0 1 1 264000000
pclkssp 0 0 264000000
pclkirda 0 0 264000000
timclk 1 1 2400000

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

show more ...

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>

show more ...

ARM: nomadik: convert all clocks except timer to dt

This moves all Nomadik clocks except the one used for the
timer/clocksource over to the device tree.

Acked-by: Mike Turquette <mturquette@linaro.

ARM: nomadik: convert all clocks except timer to dt

This moves all Nomadik clocks except the one used for the
timer/clocksource over to the device tree.

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

show more ...

ARM: nomadik: switch over to using the FSMC driver

The Nomadik NAND driver is really just a subset of the existing
FSMC driver, so let's switch over to using that driver instead,
since it handles mo

ARM: nomadik: switch over to using the FSMC driver

The Nomadik NAND driver is really just a subset of the existing
FSMC driver, so let's switch over to using that driver instead,
since it handles more variants of this chip. The callbacks for
setting up the chip is doing stuff now handled by the FSMC
driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

show more ...

ARM: nomadik: convert to generic clock

Remove more custom stuff by simply converting the Nomadik machine
to use generic clocks and move the driver to drivers/clk.

Acked-by: Arnd Bergmann <arnd@arnd

ARM: nomadik: convert to generic clock

Remove more custom stuff by simply converting the Nomadik machine
to use generic clocks and move the driver to drivers/clk.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Turquette <mturquette@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

show more ...