clk: versatile: Rename ICST to CLK_ICST

For consistency, prefix the ICST config option with CLK as all other
clock source drivers have.

Signed-off-by: Jean Delvare <[email protected]>
Cc: Linus Wall

clk: versatile: Rename ICST to CLK_ICST

For consistency, prefix the ICST config option with CLK as all other
clock source drivers have.

Signed-off-by: Jean Delvare <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Michael Turquette <[email protected]>
Cc: Stephen Boyd <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Link: https://lore.kernel.org/r/20210901180833.4558932d@endymion
Signed-off-by: Stephen Boyd <[email protected]>

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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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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clk: versatile: delete old RealView clock implementation

The old RealView clock implementation is not used anymore
(nothing in the kernel calls realview_clk_init()) as we have
moved all clocks over

clk: versatile: delete old RealView clock implementation

The old RealView clock implementation is not used anymore
(nothing in the kernel calls realview_clk_init()) as we have
moved all clocks over to device tree. Delete it.

Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>

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ARM/clk: move the ICST library to drivers/clk

This moves the ICST clock divider helper library from
arch/arm/common to drivers/clk/versatile so it is maintained
with the other clock drivers.

We kee

ARM/clk: move the ICST library to drivers/clk

This moves the ICST clock divider helper library from
arch/arm/common to drivers/clk/versatile so it is maintained
with the other clock drivers.

We keep the structure as a helper library intact and do not
fuse it with the clk-icst.c Versatile ICST clock driver: there
may be other users out there that need to use this library for
their clocking, and then it will be helpful to keep the
library contained. (The icst.[c|h] files could just be moved
to drivers/clk/lib or a similar location to share the library.)

Acked-by: Stephen Boyd <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>

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ARM: vexpress: Remove non-DT code

Now, with the CLCD DT support available, there is no
more reason to keep the non-DT support for V2P-CA9.

Removed, together with "some" supporting code. It was
nece

ARM: vexpress: Remove non-DT code

Now, with the CLCD DT support available, there is no
more reason to keep the non-DT support for V2P-CA9.

Removed, together with "some" supporting code. It was
necessary to make PLAT_VERSATILE_SCHED_CLOCK optional
and selected by the machines still interested in it.

Acked-by: Mike Turquette <[email protected]>
Signed-off-by: Pawel Moll <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

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clk: versatile: add versatile OSC support

Versatile platforms share the same OSC programming model as Integrator
platforms. Add the necessary parameters and init functions for Versatile.

Renaming t

clk: versatile: add versatile OSC support

Versatile platforms share the same OSC programming model as Integrator
platforms. Add the necessary parameters and init functions for Versatile.

Renaming the file to clk-versatile.c as versatile is used as the family
name for ARM, Ltd. boards.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Mike Turquette <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>

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clk: versatile: Split config options for sp810 and vexpress_osc

Move the Kconfig entry for Versatile (& Express) clock drivers
into a separate file and add individual options for sp810
and vexpress_

clk: versatile: Split config options for sp810 and vexpress_osc

Move the Kconfig entry for Versatile (& Express) clock drivers
into a separate file and add individual options for sp810
and vexpress_osc drivers, as they are optional in some
configurations and may have separate dependencies.

Signed-off-by: Pawel Moll <[email protected]>
Acked-by: Mike Turquette <[email protected]>

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clk: vexpress: Add separate SP810 driver

Factor out the SP810 clocking code into a separate driver,
selecting better (faster) parent at clk_prepare() time.
This is to avoid problems with clocking in

clk: vexpress: Add separate SP810 driver

Factor out the SP810 clocking code into a separate driver,
selecting better (faster) parent at clk_prepare() time.
This is to avoid problems with clocking infrastructure
initialisation order, in particular to avoid dependency
of fixed clock being initialized before SP810. It also
makes vexpress platform OF-based clock initialisation code
unnecessary.

Signed-off-by: Pawel Moll <[email protected]>
Tested-by: Catalin Marinas <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>
[[email protected]: add .unprepare, FIXME comment, cleaned up code]

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clk: move IM-PD1 clocks to drivers/clk

The ARM IM-PD1 add-on module has a few clock of its own, let's
move also these down to the drivers/clk/versatile driver dir
and get rid of any remaining oldsch

clk: move IM-PD1 clocks to drivers/clk

The ARM IM-PD1 add-on module has a few clock of its own, let's
move also these down to the drivers/clk/versatile driver dir
and get rid of any remaining oldschool Integrator clocks.

Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>

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clk: Common clocks implementation for Versatile Express

This patch adds a DT and non-DT based implementation of
the common clock infrastructure for Versatile Express
platform. It registers (statical

clk: Common clocks implementation for Versatile Express

This patch adds a DT and non-DT based implementation of
the common clock infrastructure for Versatile Express
platform. It registers (statically or using DT) all
required fixed clocks, initialises motherboard's SP810
cell (that provides clocks for SP804 timers) and
explicitly registers VE "osc" driver, to make the
clock generators available early.

Signed-off-by: Pawel Moll <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>

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clk: Versatile Express clock generators ("osc") driver

This driver provides a common clock framework hardware driver
for Versatile Express clock generators (a.k.a "osc") controlled
via the config bu

clk: Versatile Express clock generators ("osc") driver

This driver provides a common clock framework hardware driver
for Versatile Express clock generators (a.k.a "osc") controlled
via the config bus.

Signed-off-by: Pawel Moll <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>

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clk: convert ARM RealView to common clk

This converts the ARM RealView machine over to using the common
clock. The approach is similar to the one used for the Integrator,
and we're reusing the ICST

clk: convert ARM RealView to common clk

This converts the ARM RealView machine over to using the common
clock. The approach is similar to the one used for the Integrator,
and we're reusing the ICST wrapper code.

We have to put the clock intialization in the timer init function
for the clocks to be available when initializing the timer,
keeping them in early_init() is too early for the common clk.

Since we now have to go down and compile drivers/clk/versatile
a CONFIG_COMMON_CLK_VERSATILE symbol has been added so the proper
code gets compiled into the kernel for either machine. A leftover
CLK_VERSATILE in the Integrator Kconfig was fixed up to use
the new symbol as well.

Tested on ARM RealView PB1176.

Cc: Pawel Moll <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Mike Turquette <[email protected]>

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ARM: integrator: convert to common clock

This converts the Integrator platform to use common clock
and the ICST driver. Since from this point not all ARM
reference platforms use the clock, we define

ARM: integrator: convert to common clock

This converts the Integrator platform to use common clock
and the ICST driver. Since from this point not all ARM
reference platforms use the clock, we define
CONFIG_PLAT_VERSATILE_CLOCK and select it for all platforms
except the Integrator.

Open issue: I could not use the .init_early() field of the
machine descriptor to initialize the clocks, but had to
move them to .init_irq(), so presumably .init_early() is
so early that common clock is not up, and .init_machine()
is too late since it's needed for the clockevent/clocksource
initialization. Any suggestions on how to solve this is
very welcome.

Cc: Russell King <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
[[email protected]: use 'select' instead of versatile Kconfig]
Signed-off-by: Mike Turquette <[email protected]>

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clk: add versatile ICST307 driver

The ICST307 VCO clock has a shared driver in the ARM
architecture. This patch provides a wrapper into the common
clock framework so we can use the implementation in

clk: add versatile ICST307 driver

The ICST307 VCO clock has a shared driver in the ARM
architecture. This patch provides a wrapper into the common
clock framework so we can use the implementation in the
ARM architecture without duplicating the code until all
ARM platforms using this VCO are moved over. At that point
we can merge the driver from the ARM platform into the
generic file altogether.

Cc: Russell King <[email protected]>
Cc: Mike Turquette <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
[[email protected]: removed versatile Kconfig]
Signed-off-by: Mike Turquette <[email protected]>

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