Currently the decision whether to build the renesas-cpg-mssr and
clk-mstp drivers is handled by Makefile logic. However, the rcar-sysc
driver will need to know whether CPG/MSSR and/or CPG/MSTP support are
available or not.
To avoid having to duplicate this logic, move it to Kconfig. Provide
non-visible CLK_RENESAS_CPG_MSSR and CLK_RENESAS_CPG_MSTP Kconfig
symbols, which can be used by both Makefiles and C code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
In poweroff, we set the reset bit and the power down bit, but only
managed to unset the reset bit for poweron. This meant that if HDMI
did -EPROBE_DEFER after it had grabbed its clocks, we'd power down the
PLLH (that had been on at boot time) and never recover.
Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the audio domain clocks")
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add __init attribute on a function that is only called from other __init
functions and that is not inlined, at least with gcc version 4.8.4 on an
x86 machine with allyesconfig. Currently, the function is put in the
.text.unlikely segment. Declaring it as __init will cause it to be put in
the .init.text and to disappear after initialization.
The result of objdump -x on the function before the change is as follows:
0000000000000000 l F .text.unlikely 0000000000000071 sysclk_from_fixed.constprop.5
And after the change it is as follows:
0000000000000480 l F .init.text 000000000000006c sysclk_from_fixed.constprop.5
Done with the help of Coccinelle. The semantic patch checks for local
static non-init functions that are called from an __init function and are
not called from any other function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
of_find_node_by_name() will call of_node_put() on the node so we need to
get it first to avoid warnings.
The cfg_node needs to be put after we have finished processing the
properties.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk fixed-rate code to return struct
clk_hw pointers instead of struct clk pointers. This way we hide
the struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk gpio code to return struct
clk_hw pointers instead of struct clk pointers. This way we hide
the struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk composite code to return struct
clk_hw pointers instead of struct clk pointers. This way we hide
the struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk fractional divider code to
return struct clk_hw pointers instead of struct clk pointers.
This way we hide the struct clk pointer from providers unless
they need to use consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk fixed-factor code to return
struct clk_hw pointers instead of struct clk pointers. This way
we hide the struct clk pointer from providers unless they need to
use consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk mux code to return struct clk_hw
pointers instead of struct clk pointers. This way we hide the
struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk gate code to return struct
clk_hw pointers instead of struct clk pointers. This way we hide
the struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add registration APIs in the clk divider code to return struct
clk_hw pointers instead of struct clk pointers. This way we hide
the struct clk pointer from providers unless they need to use
consumer facing APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we have a clk registration API that doesn't return
struct clks, we need to have some way to hand out struct clks via
the clk_get() APIs that doesn't involve associating struct clk
pointers with a struct clk_lookup. Luckily, clkdev already
operates on struct clk_hw pointers, except for the registration
facing APIs where it converts struct clk pointers into struct
clk_hw pointers almost immediately.
Let's add clk_hw based registration APIs so that we can skip the
conversion step and provide a way for clk provider drivers to
operate exclusively on clk_hw structs. This way we clearly
split the API between consumers and providers.
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we have a clk registration API that doesn't return
struct clks, we need to have some way to hand out struct clks via
the clk_get() APIs that doesn't involve associating struct clk
pointers with an OF node. Currently we ask the OF provider to
give us a struct clk pointer for some clkspec, turn that struct
clk into a struct clk_hw and then allocate a new struct clk to
return to the caller.
Let's add a clk_hw based OF provider hook that returns a struct
clk_hw directly, so that we skip the intermediate step of
converting from struct clk to struct clk_hw. Eventually when
we've converted all OF clk providers to struct clk_hw based APIs
we can remove the struct clk based ones.
It should also be noted that we change the onecell provider to
have a flex array instead of a pointer for the array of clk_hw
pointers. This allows providers to allocate one structure of the
correct length in one step instead of two.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We've largely split the clk consumer and provider APIs along
struct clk and struct clk_hw, but clk_register() still returns a
struct clk pointer for each struct clk_hw that's registered.
Eventually we'd like to only allocate struct clks when there's a
user, because struct clk is per-user now, so clk_register() needs
to change.
Let's add new APIs to register struct clk_hws, but this time
we'll hide the struct clk from the caller by returning an int
error code. Also add an unregistration API that takes the clk_hw
structure that was passed to the registration API. This way
provider drivers never have to deal with a struct clk pointer
unless they're using the clk consumer APIs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we've converted the only caller over to another clkdev
API, remove this one.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The internal clk header did contain a comment indicating that some of the
defined registers were shared over multiple clock controller variants.
In recent times, it was simply extended all the time and stopped providing
any meaningful information, so drop it and it's overlong line.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We allow overlong lines in the array portitions describing the clock
trees to ease readability by having each element always at the same
position. But the rest of the code should honor the 80 char limit.
Fix the newly added rk3399 clock code to respect that.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
A new element got inserted into enum mx35_clks with commit 3713e3f5e9
("clk: imx35: define two clocks for rtc"). This insertion shifted most
nummerical clock assignments to a new nummerical value which in turn
rendered most hardcoded nummeric values in imx35.dtsi incorrect.
Restore the existing order by moving the newly introduced clock to the
end of the enum. Update the dts documentation accordingly.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Fixes: 3713e3f5e9 ("clk: imx35: define two clocks for rtc")
Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The OMAP Platform code provides possibility to select GP Timer as
default clocksource instead of counter_32K by using bootcmd parameter
'clocksource', but the system will crash during early boot when this
option is used on dra7 or omap5 platforms, because it will hit BUG()
statement:
omap2_gptimer_clocksource_init
->BUG_ON(res);
This happens because clk_dev alias "sys_clkin_ck" is not registered.
Hence, fix it by adding missing "sys_clkin_ck" clk_dev aliases
definitions for omap5 and dra7.
Acked-by: Tero Kristo <t-kristo@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
AM33xx/AM43xx devices use the same DPLL IP blocks, which only support
maximum rate of 1GHz [1] for the default and 2GHz for the low-jitter type
DPLLs [2]. Reflect this limitation in the DPLL init code by adding the
max-rate parameter based on the DPLL types.
[1] Functional, integration & test specification for GS70 ADPLLS, Rev 1.0-01
[2] Functional, integration & test specification for GS70 ADPLLLJ, Rev 0.8-02
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
DPLLs typically have a maximum rate they can support, and this varies
from DPLL to DPLL. Add support of the maximum rate value to the DPLL
data struct, and also add check for this in the DPLL round_rate function.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add support for USB and SDIO clocks.
Report unsupported setups and panic.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The clk_register() function returns a valid pointer to struct clk or
ERR_PTR() error code, this makes a check for returned NULL value
useless and may lead to oops on error path.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: bcc5fd49a0 ("clk: at91: add a driver for the h32mx clock")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Hou Zhiqiang <B48286@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Guo Zeng <Guo.Zeng@csr.com>
Cc: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a driver for the main clock controller of the Artpec-6 Soc.
Signed-off-by: Lars Persson <larper@axis.com>
[sboyd@codeaurora.org: Reformatted driver structure and of match]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Commit 7aba4f5201 ("clk: ti: dflt: fix enable_reg validity check")
fixed a validation check by using an IS_ERR() macro within the
existing unlikely expression, but IS_ERR() macro already has an
unlikely inside it, so get rid of the redundant unlikely macro
from the validation check.
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Main change is probably the added support for the new rk3399 soc
and necessary infrastructure changes surrounding it.
The biggest chunk is probably that clock code is now able to
handle multiple clock providers in one system, as the rk3399
has two of those. A general one and another smaller one in a
separate power domain. The rk3399 also uses another new pll type.
Thankfully it just fits nicely into our current structure.
It also needs some parts like the cpuclk mux parameters to be
a bit more flexible and an new fractional divider subtype without
gate.
Apart from this big change we have some more fixes and removal
of forgotten variables.
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Merge tag 'v4.7-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull rockchip clk updates from Heiko Stuebner:
This is first big chunk of Rockchip clock-related changes for 4.7.
Main change is probably the added support for the new rk3399 soc
and necessary infrastructure changes surrounding it.
The biggest chunk is probably that clock code is now able to
handle multiple clock providers in one system, as the rk3399
has two of those. A general one and another smaller one in a
separate power domain. The rk3399 also uses another new pll type.
Thankfully it just fits nicely into our current structure.
It also needs some parts like the cpuclk mux parameters to be
a bit more flexible and an new fractional divider subtype without
gate.
Apart from this big change we have some more fixes and removal
of forgotten variables.
* tag 'v4.7-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: add clock controller for the RK3399
dt-bindings: add bindings for rk3399 clock controller
clk: rockchip: add dt-binding header for rk3399
clk: rockchip: release io resource when failing to init clk
clk: rockchip: remove redundant checking of device_node
clk: rockchip: fix warning reported by kernel-doc
clk: rockchip: remove mux_core_reg from rockchip_cpuclk_reg_data
clk: rockchip: add new pll-type for rk3399 and similar socs
clk: rockchip: Add support for multiple clock providers
clk: rockchip: allow varying mux parameters for cpuclk pll-sources
clk: rockchip: add a COMPOSITE_FRACMUX_NOGATE type
Pull renesas clk driver updates from Geert Uytterhoeven:
- Support for the PWM module clock and watchdog related clocks on R-Car H3,
- Cleanups and clarifications.
* 'clk-renesas-for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: mstp: Clarify cpg_mstp_{at,de}tach_dev() domain parameter
clk: renesas: cpg-mssr: Drop check for CONFIG_PM_GENERIC_DOMAINS_OF
clk: renesas: mstp: Drop check for CONFIG_PM_GENERIC_DOMAINS_OF
clk: renesas: r8a7795: add RWDT clock
clk: renesas: r8a7795: add R clk
clk: renesas: r8a7795: add OSC and RINT clocks
clk: renesas: cpg-mssr: add generic support for read-only DIV6 clocks
clk: renesas: r8a7795: make SD clk definition specific for GEN3
clk: renesas: r8a7795: add PWM clock
- Register SAI clk as shared clocks to support SAI audio on i.MX6SX
- Add the missing ckil clock for i.MX7
- Update clk-gate2 and vf610 clock driver to prepare for suspend
support on VF610
- Fix DCU clock configurations and add TCON ipg clock to support DRM
display on VF610
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Merge tag 'imx-clk-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into clk-next
The i.MX clock update for 4.7:
- Register SAI clk as shared clocks to support SAI audio on i.MX6SX
- Add the missing ckil clock for i.MX7
- Update clk-gate2 and vf610 clock driver to prepare for suspend
support on VF610
- Fix DCU clock configurations and add TCON ipg clock to support DRM
display on VF610
* tag 'imx-clk-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
clk: imx: vf610: fix whitespace in vf610-clock.h
clk: imx: vf610: add TCON ipg clock
clk: imx: vf610: fix DCU clock tree
clk: imx: add ckil clock for i.MX7
clk: imx: vf610: add suspend/resume support
clk: imx: vf610: add WKPU unit
clk: imx: vf610: leave DDR clock on
clk: imx: clk-gate2: allow custom gate configuration
clk: imx6sx: Register SAI clocks as shared clocks
- Fix the typo in CAN clock definition which is introduced by commit
ee36027427 ("clk: imx: Add clock support for imx6qp")
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Merge tag 'imx-clk-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into clk-fixes
The i.MX clk fixes for 4.6:
- Fix the typo in CAN clock definition which is introduced by commit
ee36027427 ("clk: imx: Add clock support for imx6qp")
* tag 'imx-clk-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
clk: imx6q: fix typo in CAN clock definition
(UART, MMC2 clocks) for exynos3250 SoC and exporting of IDs
for exynos543x SoC AMBA AXI bus clocks needed for bus frequency
scaling.
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Merge tag 'clk-v4.7-samsung' of git://linuxtv.org/snawrocki/samsung into clk-next
Pull samsung clk updates from Sylwester Nawrocki:
This includes addition of some missing clock tree definitions
(UART, MMC2 clocks) for exynos3250 SoC and exporting of IDs
for exynos543x SoC AMBA AXI bus clocks needed for bus frequency
scaling.
* tag 'clk-v4.7-samsung' of git://linuxtv.org/snawrocki/samsung:
clk: samsung: exynos542x: Add the clock id for ACLK
dt-bindings: clock: Add the clock id for ACLK clock of Exynos542x SoC
clk: samsung: exynos3250: Add MMC2 clock
clk: samsung: exynos3250: Add UART2 clock
dt-bindings: Add the clock id of UART2 and MMC2 for Exynos3250
When changing the clock-rate, currently a new parent is set first and a
divider adapted thereafter. This may result in the clock-rate overflowing
its target rate for a short time if the new parent has a higher rate than
the old parent.
While this often doesn't produce negative effects, it can affect components
in a voltage-scaling environment, like the GPU on the rk3399 socs, where
the voltage than simply is to low for the temporarily to high clock rate.
For general clock hirarchies this may need more extensive adaptions to
the common clock-framework, but at least for composite clocks having
both parent and rate settings it is easy to create a short-term solution to
make sure the clock-rate does not overflow the target.
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch adds the clock id for ACLK clock which is source clock
of AMBA AXI bus. This clock should be handled in the bus frequency
scaling driver.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
commit ee36027427 ("clk: imx: Add clock support for imx6qp")
introduced a regression due to a subtle typo in the 'can_root' clock
definition. The effect is that trying to configure the bitrate of the
can interfaces fails with -EDOM or produces a division by zero error
due to the clock_freq of the can serial clock being reported as '0'.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Fixes: ee36027427 ("clk: imx: Add clock support for imx6qp")
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add the ipg (bus) clock for the TCON modules (Timing Controller). This
module is required by the new DCU DRM driver, since the display signals
pass through TCON.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Similar to an earlier fix for the SAI clocks, the DCU clock hierarchy
mixes the bus clock with the display controllers pixel clock. Tests
have shown that the gates in CCM_CCGR3/9 registers do not control
the DCU pixel clock, but only the register access clock (bus clock).
Fix this by defining the parent clock of VF610_CLK_DCUx to be the bus
clock (ipg_bus).
Since the clock has not been used far, there are no further changes
needed.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
rename the mcasp8_ahclk_mux to mcasp8_ahclkx_mux.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[tony@atomide.com: updated for the unit offsets]
Signed-off-by: Tony Lindgren <tony@atomide.com>
This call matches clocks which have been marked as critical in DT
and sets the appropriate flag. These flags can then be used to
mark the clock core flags appropriately prior to registration.
Legacy bindings requiring this feature must add the clock-critical
property to their binding descriptions, as it is not a part of
common-clock binding.
Cc: devicetree@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1455225554-13267-4-git-send-email-mturquette@baylibre.com
Critical clocks are those which must not be gated, else undefined
or catastrophic failure would occur. Here we have chosen to
ensure the prepare/enable counts are correctly incremented, so as
not to confuse users with enabled clocks with no visible users.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1455225554-13267-2-git-send-email-mturquette@baylibre.com
Make it clear that the "domain" parameter of the cpg_mstp_attach_dev()
and cpg_mstp_detach_dev() functions is not used.
The cpg_mstp_attach_dev() and cpg_mstp_detach_dev() callbacks are not
only used by the CPG/MSTP Clock Domain driver, but also by the R-Mobile
SYSC PM Domain driver.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
As of commit 71d076ceb2 ("ARM: shmobile: Enable PM and
PM_GENERIC_DOMAINS for SoCs with PM Domains"),
CONFIG_PM_GENERIC_DOMAINS_OF is always enabled for SoCs with a CPG/MSSR
block.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
As of commit 71d076ceb2 ("ARM: shmobile: Enable PM and
PM_GENERIC_DOMAINS for SoCs with PM Domains"),
CONFIG_PM_GENERIC_DOMAINS_OF is always enabled for SoCs with MSTP
clocks.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Add the necessary clock to use the ckil on i.MX7.
Inspired from the following patch:
https://github.com/boundarydevices/linux-imx6/commit/b80e8271
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
R can select between two parents. We deal with it like this: During
initialization, check if EXTALR is populated. If so, use it for R. If
not, use R_Internal. clk_mux doesn't help here because we don't want to
switch parents depending on the clock rate. The clock rate (and source)
should stay constant for the watchdog, so I think a setup like this
during initialization makes sense.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Gen3 has two clocks (OSC and R) which look like a DIV6 clock but their
divider value is read-only and depends on MD pins at bootup. Add support
for such clocks by reading the value and adding a fixed clock.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The drivers/clk/mvebu directory is only being built when
CONFIG_PLAT_ORION=y. As we are going to support additional mvebu
platforms in drivers/clk/mvebu, which don't have CONFIG_PLAT_ORION=y,
we need to recurse into this directory regardless of the value of
CONFIG_PLAT_ORION.
Since all files in drivers/clk/mvebu/ are already conditionally
compiled depending on various Kconfig options, we can recurse
unconditionally into drivers/clk/mvebu without any other change.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The clock register are lost when enterying LPSTOPx, hence provide
suspend/resume functions restoring them. The clock gates get
restored by the individual driver, hence we do not need to restore
them here.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
To use STOP mode without putting DDR3 into self-refresh mode, we
need to keep the DDR clock enabled. Use the new gate configuration
with a value of 2 to make sure that the clock is enabled in RUN,
WAIT and STOP mode.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The 2-bit gates found i.MX and Vybrid SoC support different clock
configuration:
0b00: clk disabled
0b01: clk enabled in RUN mode but disabled in WAIT and STOP mode
0b10: clk enabled in RUN, WAIT and STOP mode (only Vybrid)
0b11: clk enabled in RUN and WAIT mode
For some clocks, we might want to configure different behaviour,
e.g. a memory clock should be on even in STOP mode. Add a new
function imx_clk_gate2_cgr which allow to configure specific
gate values through the cgr_val parameter.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
SAIx and SAIx_IPG share the same bit fields in the CCM registers, so
we should better register them via imx_clk_gate2_shared().
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
clocks on 2835, add the PCM clock that used to be driven directly by
the bcm2835-i2s driver (that driver has been broken since this driver
was introduced), and adds many other new clocks.
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Merge tag 'bcm2835-clk-next-2016-03-17' of git://github.com/anholt/linux into clk-next
This pull request against clk/clk-next brings in fixes for fractional
clocks on 2835, add the PCM clock that used to be driven directly by
the bcm2835-i2s driver (that driver has been broken since this driver
was introduced), and adds many other new clocks.
* tag 'bcm2835-clk-next-2016-03-17' of git://github.com/anholt/linux:
clk: bcm2835: add missing osc and per clocks
clk: bcm2835: add missing PLL clock dividers
clk: bcm2835: enable management of PCM clock
clk: bcm2835: reorganize bcm2835_clock_array assignment
clk: bcm2835: remove use of BCM2835_CLOCK_COUNT in driver
clk: bcm2835: expose raw clock-registers via debugfs
clk: bcm2835: clean up coding style issues
clk: bcm2835: correctly enable fractional clock support
clk: bcm2835: divider value has to be 1 or more
clk: bcm2835: add locking to pll*_on/off methods
clk: bcm2835: pll_off should only update CM_PLL_ANARST
Drivers for these don't exist yet so we will add them as fixed clocks
so we don't BUG() if we change clocks that reference these clocks.
Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
When this was added not all the remaining defines were switched over to
use enums, so let's complete that process here
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The qcom_reset_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The rst_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The sunxi_ve_reset_ops, sun9i_mmc_reset_ops, and sunxi_usb_reset_ops
structures are never modified. Make them const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The atlas7_rst_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The rockchip_softrst_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The mmp_clk_reset_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The mtk_reset_ops structure is never modified. Make it const.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
About SD clocks: The clock type is Gen3 specific, the callbacks are all
Gen3 specific; I think the clock definition should also be Gen3 specific
and not in the general header file.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Add the clock tree definition for the new RK3399 SoC.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We should call iounmap to relase reg_base since it's not going
to be used any more if failing to init clk.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
rockchip_clk_of_add_provider is used by sub-clk driver which
already call of_iomap before calling it. If device_node does
not exist, of_iomap returns NULL which will fail to init the
sub-clk driver. So really it's redundant.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
./scripts/kernel-doc -man -v drivers/clk/rockchip/clk.h > /dev/null
drivers/clk/rockchip/clk.h:133: warning: missing initial short
description on line:
* struct rockchip_clk_provider: information about clock provider
drivers/clk/rockchip/clk.h:133: info: Scanning doc for struct
drivers/clk/rockchip/clk.h:164: warning: missing initial short
description on line:
* struct rockchip_pll_clock: information about pll clock
drivers/clk/rockchip/clk.h:164: info: Scanning doc for struct
drivers/clk/rockchip/clk.h:194: warning: No description found for
parameter 'parent_names'
drivers/clk/rockchip/clk.h:194: warning: No description found for
parameter 'num_parents'
drivers/clk/rockchip/clk.h:194: warning: Excess struct/union/enum/typedef
member 'parent_name' description in 'rockchip_pll_clock'
drivers/clk/rockchip/clk.h:235: warning: missing initial short
description on line:
* struct rockchip_cpuclk_reg_data: describes register offsets and
masks of the cpuclock
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
mux_core_reg isn't been used anywhere, let's remove it.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The rk3399's pll and clock are similar with rk3036's, it different
with base on the rk3066(rk3188, rk3288, rk3368 use it), there are
different adjust foctors and control registers, so these should be
independent and separate from the series of rk3066s.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
There are need to support Multi-CRUs probability in future, but
it is not supported on the current Rockchip Clock Framework.
Therefore, this patch add support a provider as the parameter
handler when we call the clock register functions for per CRU.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Thers are only two parent PLLs that APLL and GPLL for core on the
previous SoCs (RK3066/RK3188/RK3288/RK3368). Hence, we set fixed
GPLL as alternate parent when core is switching freq.
Since RK3399 big.LITTLE architecture, we need to select and adapt
more PLLs (ALPLL/ABPLL/DPLL/GPLL) sources.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Because there are some frac clock mux nodes don't have a gate node on
the RK3399.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
new device support in terms of LoC, but there has been some cleanup
in the core as well as the usual minor clk additions to various
drivers.
Core:
- parent tracking has been simplified
- CLK_IS_ROOT is now a no-op flag, cleaning up drivers has started
- of_clk_init() doesn't consider disabled DT nodes anymore
- clk_unregister() had an error path bug squashed
- of_clk_get_parent_count() has been fixed to only return unsigned ints
- HAVE_MACH_CLKDEV is removed now that the last arch user (ARM) is gone
New Drivers:
- NXP LPC18xx creg
- QCOM IPQ4019 GCC
- TI dm814x ADPLL
- i.MX6QP
Updates:
- Cyngus audio clks found on Broadcom iProc devices
- Non-critical fixes for BCM2385 PLLs
- Samsung exynos5433 updates for clk id errors, HDMI support,
suspend/resume simplifications
- USB, CAN, LVDS, and FCP clks on shmobile devices
- sunxi got support for more clks on new SoCs and went through a minor
refactoring/rewrite to use a simpler factor clk construct
- rockchip added some more clk ids and added suport for fraction dividers
- QCOM GDSCs in msm8996
- A new devm helper to make adding custom actions simpler (acked by Greg)
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"The clk changes for this release cycle are mostly dominated by new
device support in terms of LoC, but there has been some cleanup in the
core as well as the usual minor clk additions to various drivers.
Core:
- parent tracking has been simplified
- CLK_IS_ROOT is now a no-op flag, cleaning up drivers has started
- of_clk_init() doesn't consider disabled DT nodes anymore
- clk_unregister() had an error path bug squashed
- of_clk_get_parent_count() has been fixed to only return unsigned ints
- HAVE_MACH_CLKDEV is removed now that the last arch user (ARM) is gone
New Drivers:
- NXP LPC18xx creg
- QCOM IPQ4019 GCC
- TI dm814x ADPLL
- i.MX6QP
Updates:
- Cyngus audio clks found on Broadcom iProc devices
- Non-critical fixes for BCM2385 PLLs
- Samsung exynos5433 updates for clk id errors, HDMI support,
suspend/resume simplifications
- USB, CAN, LVDS, and FCP clks on shmobile devices
- sunxi got support for more clks on new SoCs and went through a
minor refactoring/rewrite to use a simpler factor clk construct
- rockchip added some more clk ids and added suport for fraction
dividers
- QCOM GDSCs in msm8996
- A new devm helper to make adding custom actions simpler (acked by Greg)"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (197 commits)
clk: bcm2835: fix check of error code returned by devm_ioremap_resource()
clk: renesas: div6: use RENESAS for #define
clk: renesas: Rename header file renesas.h
clk: max77{686,802}: Remove CLK_IS_ROOT
clk: versatile: Remove CLK_IS_ROOT
clk: sunxi: Remove use of variable length array
clk: fixed-rate: Remove CLK_IS_ROOT
clk: qcom: Remove CLK_IS_ROOT
doc: dt: add documentation for lpc1850-creg-clk driver
clk: add lpc18xx creg clk driver
clk: lpc32xx: fix compilation warning
clk: xgene: Add missing parenthesis when clearing divider value
clk: mb86s7x: Remove CLK_IS_ROOT
clk: x86: Remove clkdev.h and clk.h includes
clk: x86: Remove CLK_IS_ROOT
clk: mvebu: Remove CLK_IS_ROOT
clk: renesas: move drivers to renesas directory
clk: si5{14,351,70}: Remove CLK_IS_ROOT
clk: scpi: Remove CLK_IS_ROOT
clk: s2mps11: Remove CLK_IS_ROOT
...
Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons:
- Rockchip rk3368 gains power domain support
- Small updates for the ARM spmi driver
- The Atmel PMC driver saw a larger rework, touching both
arch/arm/mach-at91 and drivers/clk/at91
- All reset controller driver changes alway get merged through
arm-soc, though this time the largest change is the addition
of a MIPS pistachio reset driver
- One bugfix for the NXP (formerly Freescale) i.MX weim bus driver
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons:
- Rockchip rk3368 gains power domain support
- Small updates for the ARM spmi driver
- The Atmel PMC driver saw a larger rework, touching both
arch/arm/mach-at91 and drivers/clk/at91
- All reset controller driver changes alway get merged through
arm-soc, though this time the largest change is the addition of a
MIPS pistachio reset driver
- One bugfix for the NXP (formerly Freescale) i.MX weim bus driver"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits)
bus: imx-weim: Take the 'status' property value into account
clk: at91: remove useless includes
clk: at91: pmc: remove useless capacities handling
clk: at91: pmc: drop at91_pmc_base
usb: gadget: atmel: access the PMC using regmap
ARM: at91: remove useless includes and function prototypes
ARM: at91: pm: move idle functions to pm.c
ARM: at91: pm: find and remap the pmc
ARM: at91: pm: simply call at91_pm_init
clk: at91: pmc: move pmc structures to C file
clk: at91: pmc: merge at91_pmc_init in atmel_pmc_probe
clk: at91: remove IRQ handling and use polling
clk: at91: make use of syscon/regmap internally
clk: at91: make use of syscon to share PMC registers in several drivers
hwmon: (scpi) add energy meter support
firmware: arm_scpi: add support for 64-bit sensor values
firmware: arm_scpi: decrease Tx timeout to 20ms
firmware: arm_scpi: fix send_message and sensor_get_value for big-endian
reset: sti: Make reset_control_ops const
reset: zynq: Make reset_control_ops const
...
Here's our branch of ARM64 contents for this merge window, now
containing all ARM64 changes other than device tree files.
- Various new platforms get added
- Allwinner A64 SoC
- Annapurna Labs Alpine SoCs
- Broadcom Vulcan
- Marvell Armada 3700 SoCs
- Amlogic S905
- Various defconfig changes to enable platform specific drivers
This branch includes the clk git tree to resolve a build-time
dependency.
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Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC 64-bit changes from Arnd Bergmann:
"Here's our branch of ARM64 contents for this merge window, now
containing all ARM64 changes other than device tree files.
- Various new platforms get added:
* Allwinner A64 SoC
* Annapurna Labs Alpine SoCs
* Broadcom Vulcan
* Marvell Armada 3700 SoCs
* Amlogic S905
- Various defconfig changes to enable platform specific drivers
This branch includes the clk git tree to resolve a build-time
dependency"
* tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits)
arm64: defconfig: Increase MMC_BLOCK_MINORS to 16
arm64: defconfig: Add Qualcomm sdhci and restart functionality
ARM64: Enable Amlogic Meson GXBaby platform
arm64: defconfig: Enable Samsung MFD and related configs
arm64: alpine: select the Alpine MSI controller driver
arm64: defconfig: enable the Alpine family
arm64: add Alpine SoC family
arm64: defconfig: Enable exynos thermal config
arm64: add defconfig options for Allwinner SoCs
arm64: defconfig: Enable DesignWare APB GPIO controller
arm64: defconfig: Add Renesas R-Car Gen3 USB 2.0 phy driver support
arm64: EXYNOS: Consolidate ARCH_EXYNOS7 symbol into ARCH_EXYNOS
clk: samsung: Don't build ARMv8 clock drivers on ARMv7
MAINTAINERS: Add entry for Broadcom Vulcan SoC
arm64: cputype info for Broadcom Vulcan
arm64: Broadcom Vulcan support
arm64: defconfig: Add Broadcom Vulcan to defconfig
arm64: update ARCH_MVEBU for Marvell Armada 7K/8K support
Documentation: arm: add Marvell Armada 7K and 8K families
Documentation: arm: add link to Armada 38x Functional Spec
...
Newly added support for additional SoCs:
- Axis Artpec-6 SoC family
- Allwinner A83T SoC
- Mediatek MT7623
- NXP i.MX6QP SoC
- ST Microelectronics stm32f469 microcontroller
New features:
- SMP support for Mediatek mt2701
- Big-endian support for NXP i.MX
- DaVinci now uses the new DMA engine dma_slave_map
- OMAP now uses the new DMA engine dma_slave_map
- earlyprintk support for palmchip uart on mach-tango
- delay timer support for orion
Other:
- Exynos PMU driver moved out to drivers/soc/
- Various smaller updates for Renesas, Xilinx, PXA, AT91, OMAP, uniphier
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Arnd Bergmann:
"Newly added support for additional SoCs:
- Axis Artpec-6 SoC family
- Allwinner A83T SoC
- Mediatek MT7623
- NXP i.MX6QP SoC
- ST Microelectronics stm32f469 microcontroller
New features:
- SMP support for Mediatek mt2701
- Big-endian support for NXP i.MX
- DaVinci now uses the new DMA engine dma_slave_map
- OMAP now uses the new DMA engine dma_slave_map
- earlyprintk support for palmchip uart on mach-tango
- delay timer support for orion
Other:
- Exynos PMU driver moved out to drivers/soc/
- Various smaller updates for Renesas, Xilinx, PXA, AT91, OMAP,
uniphier"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: uniphier: rework SMP code to support new System Bus binding
ARM: uniphier: add missing of_node_put()
ARM: at91: avoid defining CONFIG_* symbols in source code
ARM: DRA7: hwmod: Add data for eDMA tpcc, tptc0, tptc1
ARM: imx: Make reset_control_ops const
ARM: imx: Do L2 errata only if the L2 cache isn't enabled
ARM: imx: select ARM_CPU_SUSPEND only for imx6
dmaengine: pxa_dma: fix the maximum requestor line
ARM: alpine: select the Alpine MSI controller driver
ARM: pxa: add the number of DMA requestor lines
dmaengine: mmp-pdma: add number of requestors
dma: mmp_pdma: Add the #dma-requests DT property documentation
ARM: OMAP2+: Add rtc hwmod configuration for ti81xx
ARM: s3c24xx: Avoid warning for inb/outb
ARM: zynq: Move early printk virtual address to vmalloc area
ARM: DRA7: hwmod: Add custom reset handler for PCIeSS
ARM: SAMSUNG: Remove unused register offset definition
ARM: EXYNOS: Cleanup header files inclusion
drivers: soc: samsung: Enable COMPILE_TEST
MAINTAINERS: Add maintainers entry for drivers/soc/samsung
...
Pull ARM updates from Russell King:
"Another mixture of changes this time around:
- Split XIP linker file from main linker file to make it more
maintainable, and various XIP fixes, and clean up a resulting
macro.
- Decompressor cleanups from Masahiro Yamada
- Avoid printing an error for a missing L2 cache
- Remove some duplicated symbols in System.map, and move
vectors/stubs back into kernel VMA
- Various low priority fixes from Arnd
- Updates to allow bus match functions to return negative errno
values, touching some drivers and the driver core. Greg has acked
these changes.
- Virtualisation platform udpates form Jean-Philippe Brucker.
- Security enhancements from Kees Cook
- Rework some Kconfig dependencies and move PSCI idle management code
out of arch/arm into drivers/firmware/psci.c
- ARM DMA mapping updates, touching media, acked by Mauro.
- Fix places in ARM code which should be using virt_to_idmap() so
that Keystone2 can work.
- Fix Marvell Tauros2 to work again with non-DT boots.
- Provide a delay timer for ARM Orion platforms"
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits)
ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0
ARM: 8547/1: dma-mapping: store buffer information
ARM: 8543/1: decompressor: rename suffix_y to compress-y
ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile
ARM: 8541/1: decompressor: drop redundant FORCE in Makefile
ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files
ARM: 8539/1: decompressor: drop more unneeded assignments to "targets"
ARM: 8538/1: decompressor: drop unneeded assignments to "targets"
ARM: 8532/1: uncompress: mark putc as inline
ARM: 8531/1: turn init_new_context into an inline function
ARM: 8530/1: remove VIRT_TO_BUS
ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL
ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds
ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL
ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs
ARM: make the physical-relative calculation more obvious
ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL
ARM: 8411/1: Add default SPARSEMEM settings
ARM: 8503/1: clk_register_clkdev: remove format string interface
ARM: 8529/1: remove 'i' and 'zi' targets
...
Add AVE0, DFT, GP0, GP1, GP2, SLIM, SMI, TEC, DPI, CAM0, CAM1, DSI0E,
and DSI1E. PULSE is not added because it has an extra divider.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Enable the PCM clock in the SOC, which is used by the
bcm2835-i2s driver.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reorganize bcm2835_clock_array so that there is no more
need for separate bcm2835_*_data structures to be defined.
Instead the required structures are generated inline via
helper macros.
To allow this to also work for pll alone it was required that
the parent_pll was changed from a pointer to bcm2835_pll_data
to the name of the pll instead.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
As the use of BCM2835_CLOCK_COUNT in
include/dt-bindings/clock/bcm2835.h is frowned upon as
it needs to get modified every time a new clock gets introduced
this patch changes the clk-bcm2835 driver to use a different
scheme for registration of clocks and pll, so that there
is no more need for BCM2835_CLOCK_COUNT to be defined.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
For debugging purposes under some circumstance
it helps to be able to see the actual clock registers.
E.g: when looking at the clock divider it is helpful to
see what the actual clock divider is.
This patch exposes all the clock registers specific to each
clock/pll/pll-divider via debugfs.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Eric Anholt <eric@anholt.net>
The current driver calculates the clock divider with
fractional support enabled.
But it does not enable fractional support in the
control register itself resulting in an integer only divider,
but in clk_set_rate responds back the fractionally divided
clock frequency.
This patch enables fractional support in the control register
whenever there is a fractional bit set in the requested clock divider.
Mash clock limits are are also handled for the PWM clock
applying the correct divider limits (2 and max_int) applicable to
basic fractional divider support (mash order of 1).
It also adds locking to protect the read/modify/write cycle of
the register modification.
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the
audio domain clocks")
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Current clamping of a normal divider allows a value < 1 to be valid.
A divider of < 1 would actually only be possible if we had a PLL...
So this patch clamps the divider to 1.
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the
audio domain clocks")
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Add missing locking to:
* bcm2835_pll_divider_on
* bcm2835_pll_divider_off
to protect the read modify write cycle for the
register access protecting both cm_reg and a2w_reg
registers.
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the
audio domain clocks")
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
bcm2835_pll_off is currently assigning CM_PLL_ANARST to the control
register, which may lose the other bits that are currently set by the
clock dividers.
It also now locks during the read/modify/write cycle of both
registers.
Fixes: 41691b8862 ("clk: bcm2835: Add support for programming the
audio domain clocks")
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
The emac needs constant and very specific rate but the possible PLL-sources
are very limited, so we expect the PLL source to be set manually on per
board and don't want it to get changed in an automatic way later.
So add the necessary clock-id and disable reparenting on set_rate calls.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Associate the new clock id the clock.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Xing Zheng <zhengxing@rock-chips.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Signed-off-by: David S. Miller <davem@davemloft.net>
The change fixes potential oops while accessing iomem on invalid
address, if devm_ioremap_resource() fails due to some reason.
The devm_ioremap_resource() function returns ERR_PTR() and never
returns NULL, which makes useless a following check for NULL.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Fixes: 5e63dcc74b ("clk: bcm2835: Add a driver for the auxiliary peripheral clock gates")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Name the #define guarding compilation of this header
__RENESAS_CLK_DIV6_H__ rather than __SHMOBILE_CLK_DIV6_H__.
This is a follow-up to renaming the directory in which this file lives from
shmobile to renesas which is in turn part of an ongoing process to migrate
from ARCH_SHMOBILE to ARCH_RENESAS the motivation for which being that
RENESAS seems to be a more appropriate name than SHMOBILE for the majority
of Renesas ARM based SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.
Along with the above mentioned Kconfig changes it seems appropriate
to also rename files.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Pawel Moll <pawel.moll@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Using an array allocated on the stack may lead to stack overflows
and other problems so let's move the allocation to the heap
instead. This silences the following checker warning as well.
drivers/clk/sunxi/clk-sun8i-mbus.c:36:29: warning: Variable length array is used
Cc: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The CREG block on lpc18xx contains configuration register
for two low power clocks. Support enabling of these two
clocks with a clk driver that access CREG trough the
syscon regmap interface.
These clocks are needed to support peripherals like the
internal RTC on lpc18xx.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
fixes for missing error-handling in mmc-phase, inverters and cpu-clocks
and some more clock-ids.
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Merge tag 'v4.6-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull second batch of rockchip clk updates from Heiko Stuebner:
Inclusion of the rk3368 fractional dividers into our handling scheme,
fixes for missing error-handling in mmc-phase, inverters and cpu-clocks
and some more clock-ids.
* tag 'v4.6-rockchip-clk2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: include downstream muxes into fractional dividers on rk3368
clk: rockchip: set the clock ids for RK3228 HDMI
clk: rockchip: set the clock ids for RK3228 VOP
clk: rockchip: add the tsadc clocks found on rk3228 SoCs
clk: rockchip: add the new clock ids for RK3228 HDMI
clk: rockchip: add the new clock ids for RK3228 VOP
clk: rockchip: add id of the tsadc clock found on rk3228 SoCs
clk: rockchip: fix coding style for clk-cpu.c
clk: rockchip: don't return NULL when registering mmc branch fails
clk: rockchip: don't return NULL when registering inverter fails
clk: rockchip: check grf when waiting pll lock
clk: rockchip: disable alt_parent clk in err cases when registering cpuclk
Remove the following false positives compilation warning:
- drivers/clk/nxp/clk-lpc32xx.c: In function 'lpc32xx_clk_register':
warning: 'hw' may be used uninitialized in this function [-Wmaybe-uninitialized]
- drivers/clk/nxp/clk-lpc32xx.c: In function 'clk_hclk_pll_round_rate':
warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized]
warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized]
Tested using gcc version 4.7.3.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
[sboyd@codeaurora.org: Drop assignment of hw to NULL as return
silences it and is less likely to lead to hiding problems later]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
In the initial fix for non-zero divider shift value, the parenthesis
was missing after the negate operation. This patch adds the required
parenthesis. Otherwise, lower bits may be cleared unintentionally.
Signed-off-by: Loc Ho <lho@apm.com>
Acked-by: Toan Le <toanle@apm.com>
Fixes: 1382ea631d ("clk: xgene: Fix divider with non-zero shift value")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This driver is a clk provider and not a clk consumer, so remove
the clk.h include. Also, drop clkdev.h because there's not clkdev
usage here either.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.
Along with the above mentioned Kconfig changes it seems appropriate
to also rename directories that only hold drivers for such SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Pull shmobile clk updates from Geert Uytterhoeven:
- Fix a bug in the div6 clock driver that was exposed by CAN
support on R-Car H3,
- Add more module clocks for R-Car H3.
* 'clk-shmobile-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: shmobile: r8a7795: Add CAN FD peripheral clock
clk: shmobile: r8a7795: Add CANFD clock
clk: shmobile: r8a7795: Add CAN peripheral clock
clk: shmobile: div6: Fix .recalc_rate() using a stale divisor
clk: shmobile: r8a7795: Add LVDS module clock
clk: shmobile: r8a7795: Add FCP clocks
This flag is a no-op now. Remove usage of the flag.
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Cc: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Acked-by: Andi Shyti <andi.shyti@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Bintian Wang <bintian.wang@huawei.com>
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Cc: Lee Jones <lee@kernel.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
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Pull i.MX clk updates from Shawn Guo:
The i.MX clock update for 4.6:
- Add the clock driver support for the latest i.MX6 family SoCs
addition - i.MX6QP.
- Clean up the whitespace in i.MX6UL clock driver and add the missing
KPP clock.
- Correct pwm7 clock name in i.MX6UL clock driver.
* tag 'imx-clk-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
clk: imx: add kpp clock for i.MX6UL
clk: imx: whitespace cleanup; no functional change
clk: imx: correct pwm7 clock name in driver for i.MX6UL
clk: imx: Add clock support for imx6qp
Geert Uytterhoeven