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Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230705065313.67043-2-frank.li@vivo.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> # samsung
Acked-by: Heiko Stuebner <heiko@sntech.de> #rockchip
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # versaclock5
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230718143156.1066339-1-robh@kernel.org
Acked-by: Abel Vesa <abel.vesa@linaro.org> #imx
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The Actions composite factor clocks implements a mux with a set_parent
hook, but doesn't provide a determine_rate implementation.
This is a bit odd, since set_parent() is there to, as its name implies,
change the parent of a clock. However, the most likely candidate to
trigger that parent change is a call to clk_set_rate(), with
determine_rate() figuring out which parent is the best suited for a
given rate.
The other trigger would be a call to clk_set_parent(), but it's far less
used, and it doesn't look like there's any obvious user for that clock.
So, the set_parent hook is effectively unused, possibly because of an
oversight. However, it could also be an explicit decision by the
original author to avoid any reparenting but through an explicit call to
clk_set_parent().
The driver does implement round_rate() though, which means that we can
change the rate of the clock, but we will never get to change the
parent.
However, It's hard to tell whether it's been done on purpose or not.
Since we'll start mandating a determine_rate() implementation, let's
convert the round_rate() implementation to a determine_rate(), which
will also make the current behavior explicit. And if it was an
oversight, the clock behaviour can be adjusted later on.
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: linux-actions@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v4-48-971d5077e7d2@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The Actions composite divider clocks implements a mux with a set_parent
hook, but doesn't provide a determine_rate implementation.
This is a bit odd, since set_parent() is there to, as its name implies,
change the parent of a clock. However, the most likely candidate to
trigger that parent change is a call to clk_set_rate(), with
determine_rate() figuring out which parent is the best suited for a
given rate.
The other trigger would be a call to clk_set_parent(), but it's far less
used, and it doesn't look like there's any obvious user for that clock.
So, the set_parent hook is effectively unused, possibly because of an
oversight. However, it could also be an explicit decision by the
original author to avoid any reparenting but through an explicit call to
clk_set_parent().
The driver does implement round_rate() though, which means that we can
change the rate of the clock, but we will never get to change the
parent.
However, It's hard to tell whether it's been done on purpose or not.
Since we'll start mandating a determine_rate() implementation, let's
convert the round_rate() implementation to a determine_rate(), which
will also make the current behavior explicit. And if it was an
oversight, the clock behaviour can be adjusted later on.
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: linux-actions@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v4-47-971d5077e7d2@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The Actions "Pass" clock implements a mux with a set_parent hook, but
doesn't provide a determine_rate implementation.
This is a bit odd, since set_parent() is there to, as its name implies,
change the parent of a clock. However, the most likely candidates to
trigger that parent change are either the assigned-clock-parents device
tree property or a call to clk_set_rate(), with determine_rate()
figuring out which parent is the best suited for a given rate.
The other trigger would be a call to clk_set_parent(), but it's far less
used, and it doesn't look like there's any obvious user for that clock.
Similarly, it doesn't look like the device tree using that clock driver
uses any of the assigned-clock properties.
So, the set_parent hook is effectively unused, possibly because of an
oversight. However, it could also be an explicit decision by the
original author to avoid any reparenting but through an explicit call to
clk_set_parent().
The latter case would be equivalent to setting the determine_rate
implementation to clk_hw_determine_rate_no_reparent(). Indeed, if no
determine_rate implementation is provided, clk_round_rate() (through
clk_core_round_rate_nolock()) will call itself on the parent if
CLK_SET_RATE_PARENT is set, and will not change the clock rate
otherwise.
And if it was an oversight, then we are at least explicit about our
behavior now and it can be further refined down the line.
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: linux-actions@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v4-8-971d5077e7d2@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The assignment operation after a & mask operation is redundant,
the &= operator can be replaced with just the & operator.
Cleans up a clang-scan warning:
drivers/clk/actions/owl-pll.c:28:9: warning: Although the value
stored to 'mul' is used in the enclosing expression, the value is
never actually read from 'mul' [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220418141537.83994-1-colin.i.king@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The sentinel elements of various tables in drivers/clk/actions can be a
bit hard to recognize. Make them easier to see by changing the style
from { 0, 0 } to { /* sentinel */ }.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20220218000922.134857-6-j.neuschaefer@gmx.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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In order that the end of a clk_div_table can be detected, it must be
terminated with a sentinel element (.div = 0).
In owl-s900.s, the { 0, 8 } element was probably meant to be just that,
so this patch changes { 0, 8 } to { 0, 0 }.
Fixes: d47317ca4ade1 ("clk: actions: Add S700 SoC clock support")
Fixes: d85d20053e195 ("clk: actions: Add S900 SoC clock support")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://lore.kernel.org/r/20220218000922.134857-2-j.neuschaefer@gmx.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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owl-factor.c hasn't use any macro or function declared in linux/slab.h.
Thus, these files can be removed from owl-factor.c safely without
affecting the compilation of the ./drivers/clk module
Signed-off-by: Mianhan Liu <liumh1@shanghaitech.edu.cn>
Link: https://lore.kernel.org/r/20210929065824.23691-1-liumh1@shanghaitech.edu.cn
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for the missing NIC and ETHERNET clocks in the Actions Semi
Owl S500 SoC clock driver.
Additionally, change APB clock parent from AHB to the newly added NIC.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/d62e4f1f85c5cef05be14d9e8143e88bbddd2e0f.1623354574.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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There are a few issues with the setup of the Actions Semi Owl S500 SoC's
clock chain involving AHPPREDIV, H and AHB clocks:
* AHBPREDIV clock is defined as a muxer only, although it also acts as
a divider.
* H clock is using a wrong divider register offset
* AHB is defined as a multi-rate factor clock, but it is actually just
a fixed pass clock.
Let's provide the following fixes:
* Change AHBPREDIV clock to an ungated OWL_COMP_DIV definition.
* Use the correct register shift value in the OWL_DIVIDER definition
for H clock
* Drop the unneeded 'ahb_factor_table[]' and change AHB clock to an
ungated OWL_COMP_FIXED_FACTOR definition.
Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Link: https://lore.kernel.org/r/21c1abd19a7089b65a34852ac6513961be88cbe1.1623354574.git.cristian.ciocaltea@gmail.com
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The following clocks of the Actions Semi Owl S500 SoC have been defined
to use a shared clock factor table 'bisp_factor_table[]': DE[1-2], VCE,
VDE, BISP, SENSOR[0-1]
There are several issues involved in this approach:
* 'bisp_factor_table[]' describes the configuration of a regular 8-rates
divider, so its usage is redundant. Additionally, judging by the BISP
clock context, it is incomplete since it maps only 8 out of 12
possible entries.
* The clocks mentioned above are not identical in terms of the available
rates, therefore cannot rely on the same factor table. Specifically,
BISP and SENSOR* are standard 12-rate dividers so their configuration
should rely on a proper clock div table, while VCE and VDE require a
factor table that is a actually a subset of the one needed for DE[1-2]
clocks.
Let's fix this by implementing the following:
* Add new factor tables 'de_factor_table' and 'hde_factor_table' to
properly handle DE[1-2], VCE and VDE clocks.
* Add a common div table 'std12rate_div_table' for BISP and SENSOR[0-1]
clocks converted to OWL_COMP_DIV.
* Drop the now unused 'bisp_factor_table[]'.
Additionally, drop the CLK_IGNORE_UNUSED flag for SENSOR[0-1] since
there is no reason to always keep ON those clocks.
Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/e675820a46cd9930d8d576c6cae61d41c1a8416f.1623354574.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Drop the unsupported entries in the factor table used for the SD[0-2]
clocks definitions on the Actions Semi Owl S500 SoC.
Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/196c948d708a22b8198c95f064a0f6b6820f9980.1623354574.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Use correct divider registers for the Actions Semi Owl S500 SoC's UART
clocks.
Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/4714d05982b19ac5fec2ed74f54be42d8238e392.1623354574.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Reset Management Unit (RMU) support for Actions Semi S500 SoC.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/3fba2e6f0edfac97cb8c6ce60f95c24852578eac.1593788312.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for the missing APB, DMAC and GPIO clocks in the Actions
Semi S500 SoC clock driver.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Link: https://lore.kernel.org/r/87964ae012e513597b8b4c7be2e7ac332a70087a.1593788312.git.cristian.ciocaltea@gmail.com
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The h_clk clock in the Actions Semi S500 SoC clock driver has an
invalid parent. Replace with the correct one.
Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/c57e7ebabfa970014f073b92fe95b47d3e5a70b1.1593788312.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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'clk-actions' into clk-next
- Add regulator support to the cdce925 clk driver
- Add support for Raspberry Pi 4 bcm2711 SoCs
- Evict parents from parent cache when they're unregistered
* clk-cdce-regulator:
clk: clk-cdce925: Add regulator support
dt-bindings: clock: cdce925: Add regulator documentation
* clk-bcm:
clk: bcm2835: Mark PLLD_PER as CRITICAL
clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support
clk: bcm2835: Introduce SoC specific clock registration
dt-bindings: bcm2835-cprman: Add bcm2711 support
* clk-evict-parent-cache:
clk: Evict unregistered clks from parent caches
* clk-actions:
clk: actions: Fix factor clk struct member access
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Since the helper "owl_factor_helper_round_rate" is shared between factor
and composite clocks, using the factor clk specific helper function
like "hw_to_owl_factor" to access its members will create issues when
called from composite clk specific code. Hence, pass the "factor_hw"
struct pointer directly instead of fetching it using factor clk specific
helpers.
This issue has been observed when a composite clock like "sd0_clk" tried
to call "owl_factor_helper_round_rate" resulting in pointer dereferencing
error.
While we are at it, let's rename the "clk_val_best" function to
"owl_clk_val_best" since this is an owl SoCs specific helper.
Fixes: 4bb78fc9744a ("clk: actions: Add factor clock support")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190916154546.24982-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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A future patch is going to change semantics of clk_register() so that
clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid
referencing this member here so that we don't run into NULL pointer
exceptions.
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20190731193517.237136-2-sboyd@kernel.org
[sboyd@kernel.org: Move name to after checking for error or NULL hw]
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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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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This patch corrects the SPDX License Identifier style
in header files related to Clock Drivers for Actions Semi Socs.
For C header files Documentation/process/license-rules.rst
mandates C-like comments (opposed to C source files where
C++ style should be used)
Changes made by using a script provided by Joe Perches here:
https://lkml.org/lkml/2019/2/7/46
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add common clock driver for Actions Semi S500 SoC.
Signed-off-by: Edgar Bernardi Righi <edgar.righi@lsitec.org.br>
[Mani: cleaned up the driver]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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S500 SoC requires configurable delay for different PLLs. Hence, add
a separate macro for declaring a PLL with configurable delay and also
modify the existing OWL_PLL_NO_PARENT macro to use default delay so
that no need to modify the existing S700/S900 drivers.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Reset Management Unit (RMU) support for Actions Semi S900 SoC.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Reset Management Unit (RMU) support for Actions Semi S700 SoC.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Reset Management Unit (RMU) support for Actions Semi Owl SoCs.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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In order to support the reset controller, regmap info needs to
be cached in the private clock descriptor, owl_clk_desc. Hence,
save that and also make the clock descriptor struct non const.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Actions Semi S700 SoC clock support
Signed-off-by: Parthiban Nallathambi <pn@denx.de>
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add REGMAP_MMIO as dependency to avoid undefined
reference to regmap symbols.
Fixes: d85d20053e19 ("clk: actions: Add S900 SoC clock support")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add Actions Semi S900 SoC clock support.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi PLL clock.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi composite clock. This clock
consists of gate, mux, divider, factor and fixed factor clocks.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi fixed factor clock reusing the clk
ops from common clock driver.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi factor clock together with
helper functions to be used in composite clock.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi divider clock together with
helper functions to be used in composite clock.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi mux clock together with helper
functions to be used in composite clock.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi gate clock together with helper
functions to be used in composite clock.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for Actions Semi common clock driver with generic structures
and interface functions.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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