We need this to init PLL_CPLL to 400MHz at boot.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The Kconfig currently controlling compilation of this code is:
arch/arm/mach-omap2/Kconfig:config SOC_DRA7XX
arch/arm/mach-omap2/Kconfig: bool "TI DRA7XX"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-omap@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The Kconfig currently controlling compilation of this code is:
arch/arm/mach-tegra/Kconfig:config ARCH_TEGRA_124_SOC
arch/arm/mach-tegra/Kconfig: bool "Enable support for Tegra124 family"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Aleksandr Frid <afrid@nvidia.com>
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The Kconfig currently controlling compilation of this code is:
drivers/clk/mvebu/Kconfig:config ARMADA_AP806_SYSCON
drivers/clk/mvebu/Kconfig: bool
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The Kconfig currently controlling compilation of this code is:
drivers/clk/mvebu/Kconfig:config ARMADA_CP110_SYSCON
drivers/clk/mvebu/Kconfig: bool
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This is the initial stage to transfer the pxa25x and pxa27x CPU clocks
handling from cpufreq to the clock API. More precisely, the clocks
transferred are :
- cpll : core pll, known also as the CPU core turbo frequency
- core : core, known also as the CPU actual frequency, being either the
CPU core turbo frequency or the CPU core run frequency
This transfer is a prequel to shrink the code in pxa2xx-cpufreq.c, so
that it can become, at least in devicetree builds, the casual cpufreq-dt
driver.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
commit cfa6368860 ("clk: sunxi: factors: Consolidate get_factors
parameters into a struct") introduced a regression for m factor
computation in sun4i_get_apb1_factors function.
The old code reassigned the "parent_rate" parameter to the targeted
divisor value and was buggy for the returned frequency but not for the
computed factors. Now, returned frequency is good but m factor is
incorrectly computed (its max value 31 is always set resulting in a
significantly slower frequency than the requested one...)
This patch simply restores the original proper computation for m while
keeping the good changes for returned rate.
Fixes: cfa6368860 ("clk: sunxi: factors: Consolidate get_factors parameters into a struct")
Signed-off-by: Stéphan Rafin <stephan@soliotek.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add the A64 CCU clocks set.
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add frequency tables for a few RCG clocks in msm8996
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This would be useful in subsequent patches when the .set_rate operation
would need to identify if the PLL is actually enabled
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
[sboyd@codeaurora.org: Simplify return statement of is_enabled op]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
All R-Car Gen3 clock drivers now obtain the values of the mode pins from
the R-Car RST driver.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.
Fall back to our own private copy of rcar_gen2_read_mode_pins() for
backward-compatibility with old DTs.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
The votable alpha PLLs need to have the fsm mode enabled as part
of the initialization. The sequence seems to be the same as used
by clk-pll, so move the function which does this into a common
place and reuse it for the clk-alpha-pll
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Some alpha PLLs have support for only a 16bit programable Alpha Value
(as against the default 40bits). Add a flag to handle the 16bit alpha
registers
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a function to do initial configuration of the alpha plls
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Some PLLs can support an HW FSM mode (different from the Votable FSMs,
though its the same bit used to enable Votable FSMs as well as HW FSMs)
which enables the HW to do the bypass/reset/enable-output-ctrl sequence
on its own. So all thats needed from SW is to set the FSM_ENA bit.
PLL_ACTIVE_FLAG is whats used to check if the PLL is active/enabled.
Some of the PLLs which support HW FSM can also need an OFFLINE request
that needs to be toggled across the enable/disable. We use a flag to
identify such cases and handle them.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk-fixes:
clk: mmp: pxa910: fix return value check in pxa910_clk_init()
clk: mmp: pxa168: fix return value check in pxa168_clk_init()
clk: mmp: mmp2: fix return value check in mmp2_clk_init()
clk: qoriq: Don't allow CPU clocks higher than starting value
The current I2C freq table uses MND values which is not
applicable for I2C since its RCG does not have MND
counter. This patch updates the freq table for 19.05
MHz clk frequency with FEPLL_200 parent.
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
pxaxxx_get_clk_frequency_khz() needs several clocks to be available
through clk_get(), ie. the cpu clocks, system bus clock and memory
clocks.
Add the missing clkdev so that their rate can be acquired.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The meaning of this bit was inverted :
- when set to 0, system bus clock is half of the CPU run clock
- when set to 1, system bus clock is the CPU run clock
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The t bit of clkfcfg doesn't affect the core pll clock, but it makes core
clock select between core pll clock and core run clock.
As such remove it from the core pll rate reporting function, while it
remains in clk_pxa27x_core_get_parent().
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This is a cleanup patch to remove unused values not used in their
respective functions.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Drop the assignment of regmap_read return code to val, so the code checks
the value read.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Fix the retrn value check which testing the wrong variable
in pxa910_clk_init().
Fixes: 2bc61da9f7 ("clk: mmp: add pxa910 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Fix the retrn value check which testing the wrong variable
in pxa168_clk_init().
Fixes: ab08aefcd1 ("clk: mmp: add pxa168 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Fix the retrn value check which testing the wrong variable
in mmp2_clk_init().
Fixes: 1ec770d92a ("clk: mmp: add mmp2 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Adjust variables to correspond to the names used in the parameter list of
the function. Move the struct device * variable up to the place where it
appears in the parameter list.
Issue detected using Coccinelle (http://coccinelle.lip6.fr/)
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Adjust the documentation to use the actual function names.
Issue detected using Coccinelle (http://coccinelle.lip6.fr/)
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in Armada
CP110 system controller driver. This commit introduces new
API and registration for all clocks in CP110 HW blocks.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
s2mps11 and max77686 clock drivers can be compile tested to increase
build coverage.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The intention was to enable the checks if debugging is enabled, not
disabled.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Free memory mapping, if lpc18xx_ccu_init() is not successful.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
In common clock framework CLK_DIVIDER_ONE_BASED or'ed with
CLK_DIVIDER_ALLOW_ZERO flags indicates that
1) a divider clock may be set to zero value,
2) divider's zero value is interpreted as a non-divided clock.
On the LPC32xx platform clock dividers of PWM and memory card clocks
comply with the first condition, but zero value means a gated clock,
thus it may happen that the divider value is not updated when
the clock is enabled and the clock remains gated.
The change adds one-shot quirks, which check for zero value of divider
on initialization and set it to a non-zero value, therefore in runtime
a gate clock will work as expected.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The boot-time frequency of a CPU is considered its rated maximum, as we
have no other source of such information. However, this was previously
only used for chips with 80% restrictions on secondary PLLs. This
usually wasn't a problem because most chips/configs boot with a divider
of /1, with other dividers being used only for dynamic frequency
reduction. However, at least one config (LS1021A at less than 1 GHz)
uses a different divider for top speed. This was causing cpufreq to set
a frequency beyond the chip's rated speed.
This is fixed by applying a 100%-of-initial-speed limit to all CPU PLLs,
similar to the existing 80% limit that only applied to some.
Signed-off-by: Scott Wood <oss@buserror.net>
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a flag to mark gdscs which need to support the clamp deassert/assert
before and after the gdsc enable/disable
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The audio and video PLLs are designed to have a precision of 1 Hz if some
conditions are met. The current implementation only allows a precision that
depends on the rate of the parent clock. E.g., if the parent clock is 24
MHz, the precision will be 24 Hz; or more generally the precision will be
p / 10^6 Hz
where p is the parent clock rate. This comes down to how the register
values for the PLL's fractional loop divider are chosen.
The clock rate calculation for the PLL is
PLL output frequency = Fref * (DIV_SELECT + NUM / DENOM)
or with a shorter notation
r = p * (d + a / b)
In addition to all variables being integers, we also have the following
conditions:
27 <= d <= 54
-2^29 <= a <= 2^29-1
0 < b <= 2^30-1
|a| < b
Here, d, a and b are register values for the fractional loop divider. We
want to chose d, a and b such that f(p, r) = p, i.e. f is our round_rate
function. Currently, d and b are chosen as
d = r / p
b = 10^6
hence we get the poor precision. And a is defined in terms of r, d, p and
b:
a = (r - d * p) * b / p
I propose that if p <= 2^30-1 (i.e., the max value for b), we chose b as
b = p
We can do this since
|a| < b
|(r - d * p) * b / p| < b
|r - d * p| < p
Which have two solutions, one of them is when p < 0, so we can skip that
one. The other is when p > 0 and
p * (d - 1) < r < p * (d + 1)
Substitute d = r / p:
(r - p) < r < (r + p) <=> p > 0
So, as long as p > 0, we can chose b = p. This is a good choise for b since
a = (r - d * p) * b / p
= (r - d * p) * p / p
= r - d * p
r = p * (d + a / b)
= p * d + p * a / b
= p * d + p * a / p
= p * d + a
and if d = r / p:
a = r - d * p
= r - r / p * p
= 0
r = p * d + a
= p * d + 0
= p * r / p
= r
I reckon this is the intention by the design of the clock rate formula.
Signed-off-by: Emil Lundmark <emil@limesaudio.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Merge tag 'v4.9-rockchip-clkfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes
Fix return value in error case of new ddrclk type.
* tag 'v4.9-rockchip-clkfixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: don't return NULL when failing to register ddrclk branch
Since 'parent_rate * mfn' may overflow 32 bits, the result should be
stored using 64 bits.
The problem was discovered when trying to set the rate of the audio PLL
(pll4_post_div) on an i.MX6Q. The desired rate was 196.608 MHz, but
the actual rate returned was 192.000570 MHz. The round rate function should
have been able to return 196.608 MHz, i.e., the desired rate.
Fixes: ba7f4f557e ("clk: imx: correct AV PLL rate formula")
Cc: Anson Huang <b20788@freescale.com>
Signed-off-by: Emil Lundmark <emil@limesaudio.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Usually, the 800MHz and 1GHz are supplied for CPLL and NPLL in the RK3399.
But dues to the carelessly copying from RK3036 when the RK3399 bringing up,
the refdiv == 6, it will increase the lock time, and it is not an optimal
configuration.
Let's fix them for the lock time and jitter are lower:
800 MHz:
- FVCO == 2.4 GHz, revdiv == 1.
1 GHz:
- FVCO == 3 GHz, revdiv == 1.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Due to incorrect placement of the clock gate cell in the ldb_di[x]_clk
tree, the glitchy parent mux of ldb_di[x]_clk can cause a glitch to
enter the ldb_di_ipu_div divider. If the divider gets locked up, no
ldb_di[x]_clk is generated, and the LVDS display will hang when the
ipu_di_clk is sourced from ldb_di_clk.
To fix the problem, both the new and current parent of the ldb_di_clk
should be disabled before the switch. This patch ensures that correct
steps are followed when ldb_di_clk parent is switched in the beginning
of boot. The glitchy muxes are then registered as read-only. The clock
parent can be selected using the assigned-clocks and
assigned-clock-parents properties of the ccm device tree node:
&clks {
assigned-clocks = <&clks IMX6QDL_CLK_LDB_DI0_SEL>,
<&clks IMX6QDL_CLK_LDB_DI1_SEL>;
assigned-clock-parents = <&clks IMX6QDL_CLK_MMDC_CH1_AXI>,
<&clks IMX6QDL_CLK_PLL5_VIDEO_DIV>;
};
The issue is explained in detail in EB821 ("LDB Clock Switch Procedure &
i.MX6 Asynchronous Clock Switching Guidelines") [1].
[1] http://www.nxp.com/files/32bit/doc/eng_bulletin/EB821.pdf
Signed-off-by: Ranjani Vaidyanathan <Ranjani.Vaidyanathan@nxp.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Akshay Bhat <akshay.bhat@timesys.com>
Tested-by Joshua Clayton <stillcompiling@gmail.com>
Tested-by: Charles Kang <Charles.Kang@advantech.com.tw>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Due to incorrect placement of the clock gate cell in the ldb_di[x]_clk
tree, the glitchy parent mux of ldb_di[x]_clk can cause a glitch to
enter the ldb_di_ipu_div divider. If the divider gets locked up, no
ldb_di[x]_clk is generated, and the LVDS display will hang when the
ipu_di_clk is sourced from ldb_di_clk.
To fix the problem, both the new and current parent of the ldb_di_clk
should be disabled before the switch. As this can not be guaranteed by
the clock framework during runtime, make the ldb_di[x]_sel muxes read-only.
A workaround to set the muxes once during boot could be added to the
kernel or bootloader.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
MMDC CH1 is not used on i.MX6Q, so the handshake needed to change the
parent of periph2_sel or the divider of mmdc_ch1_axi_podf will never
succeed.
Disable the handshake mechanism to allow changing the frequency of
mmdc_ch1_axi, allowing to use it as a possible source for the LDB DI
clock.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Clock initialization for i.MX31 powered machines with DT support
should be done by a call of an init function registered with
CLK_OF_DECLARE() in common clock framework.
The change converts exported mx31_clocks_init_dt() into a static
initialization function registered by CLK_OF_DECLARE().
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Function mx31_clocks_init() is called during clock intialization on
legacy boards with reference clock frequency passed as its input
argument, this can be verified by examination of the function
declaration found in arch/arm/mach-imx/common.h and actual function
users which include that header file.
Inside CCF driver the function ignores its input argument, by chance
the used value in the function body is the same as input arguments on
side of all callers.
Fixes: d9388c8432 ("clk: imx31: Do not call mxc_timer_init twice when booting with DT")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
ioremaped addresses are not linearly mapped so the physical
address can not be figured out via __pa. More generally, there
is no guarantee that backing value of an ioremapped address
is a physical address at all. The value here is only used
for debugging so just drop the call to __pa on the ioremapped
address.
Fixes: 6ae5fd3812 ("clk: xgene: Silence sparse warnings")
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Loc Ho <lho@apm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch adds the QSPI clock for stm32f469 discovery board.
The gate mapping is a little bit different from stm32f429 soc.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch introduces the support of the RTC clock.
RTC clock can have 3 sources: lsi, lse and hse_rtc.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch introduces the support of the LSI & LSE clocks.
The clock drivers needs to disable the power domain write protection
using syscon/regmap to enable these clocks.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The Exynos PMU node is an interrupt, clock and PMU (Power Management Unit)
controller, and these functionalities are supported by different drivers
that matches the same compatible strings.
Since commit 989eafd0b6 ("clk: core: Avoid double initialization of
clocks") the OF core flags clock controllers registered with the
CLK_OF_DECLARE() macro as OF_POPULATED, so platform devices with the same
compatible string will not be registered.
This prevents the PMU platform device to be created, so the Exynos PMU
driver is never probed. This breaks (among other things) Suspend-to-RAM.
Fix this by changing CLKOUT driver initialization method to
CLK_OF_DECLARE_DRIVER(), which doesn't clear the OF_POPULATED flag, so
later a platform device is created and the Exynos PMU platform driver
can be be probed properly.
Fixes: 989eafd0b6 ("clk: core: Avoid double initialization of clocks")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Allow the CCU drivers to specify a multiplier for their clocks.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Modify the current clocks we have to be able to specify the minimum for
each clocks we support, just like we support the max.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Some clocks still use an explicit list of arguments, which make it a bit
more tedious to add new parameters.
Convert those over to a structure pointer argument to add as many
arguments as possible without having to many noise in our patches, or a
very long list of arguments.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
While the rational library works great, it doesn't really allow us to add
more constraints, like the minimum.
Remove that in order to be able to deal with the constraints we'll need.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Add support for the Oxford Semiconductor OX820 SoC gate clocks
along the OX810SE SoC support.
This rework on concerns the gate clocks since they are different.
Future PLL handling code will be added for OX820.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20161005150752.22618-6-narmstrong@baylibre.com
Make usage of static tables identified by the OF match table to
feed devm_clk_hw_register() and use of_clk_add_hw_provider().
This structure is cleaner and simplifies adding new SoC support while
having common probe and gate ops code.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20161005150752.22618-5-narmstrong@baylibre.com
Add bindings for ACLK_CPU, HCLK_CPU, PCLK_CPU, ACLK_PERI, HCLK_PERI, PCLK_PERI.
We need this to init it's rate at boot time.
Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
We need to get the accurate 533.25MHz for the DP display.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
If 'clk_hw_register()' fails, it is likely that we expect to return an
error instead of a valid pointer (which would mean success).
Fix commit f5644f10dc ("clk: at91: Migrate to clk_hw based registration
and OF APIs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Rename the structures meant to be embedded in other structures to make it
consistent with the mux structure name
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
I made a mistake as for naming for this block. The MIO block is not
implemented for these 3 SoCs in the first place. The current naming
will be a trouble if an SoC with both MIO and SD-ctrl blocks appear
in the future.
This driver has just been merged in the previous merge window.
Rename it before the release.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The first loop of this "for" statement writes memory beyond the
allocated clk_hw_onecell_data.
It should be:
for (clk_num--; clk_num >= 0; clk_num--)
...
Or more simply:
while (--clk_num >= 0)
...
Fixes: 734d82f4a6 ("clk: uniphier: add core support code for UniPhier clock driver")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
On the A31, the DMA engine only works if AHB1 is clocked from PLL6.
In addition, the hstimer is clocked from AHB1, and if AHB1 is clocked
from the CPU clock, and cpufreq is working, we get an unstable timer.
Force the AHB1 clock to use PLL6 as its parent. Previously this was done
in the device tree with the assigned-clocks and assigned-clocks-parent
bindings. However with this new monolithic driver, the system critical
clocks aren't exported through the device tree. The alternative is to
force this setting in the driver before the clocks are registered.
This is also done in newer versions of mainline U-boot. But people still
using an older version, or even the vendor version, can still hit this
issue. Hence the need to do it in the kernel as well.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The OSTIMER0 clock ticks at the main oscillator rate, not the 32kHz
oscillator rate. Ensure that it is parented to the main oscillator.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
The hi6220-sysctrl and hi6220-mediactrl are not only clock provider but
also reset controller. It worked fine that single sysctrl/mediactrl
device node in DT can be used to initialize clock driver and populate
platform device for reset controller. But it stops working after
commit 989eafd0b6 ("clk: core: Avoid double initialization of clocks")
gets merged. The commit sets flag OF_POPULATED during clock
initialization to skip the platform device populating for the same
device node. On hi6220, it effectively makes hi6220-sysctrl reset
driver not probe any more.
The patch changes hi6220 sysctrl and mediactrl clock init macro from
CLK_OF_DECLARE to CLK_OF_DECLARE_DRIVER, so that the reset driver using
the same hardware block can continue working.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
For the gate part of the peripheral clock setting the bit disables the
clock and clearing it enables the clock. This is not the default behavior
of clk_gate component, so we need to use the CLK_GATE_SET_TO_DISABLE flag.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: 8ca4746a78 ("clk: mvebu: Add the peripheral clock driver for Armada 3700")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Fixes setting low-resolution video modes on HDMI. Now the PLLH_PIX
divider adjusts itself until the PLLH is within bounds.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The commit 9b4cac33ad ("clk: max77686: Migrate to clk_hw based OF and
registration APIs") converted the driver to use the new provider API to
register clocks using clk_hw.
But unfortunately, in the conversion it missed to set the num_clks value
which lead to the following error when trying to register a clk provider:
[ 1.963782] of_clk_max77686_get: invalid index 0
[ 1.967460] ERROR: could not get clock /rtc@10070000:rtc_src(1)
[ 1.973638] s3c-rtc 10070000.rtc: failed to find rtc source clock
Fix it by correctly set the max77686_clk_driver_data num_clks member.
Fixes: 9b4cac33ad ("clk: max77686: Migrate to clk_hw based OF and registration APIs")
Reported-by: Markus Reichl <m.reichl@fivetechno.de>
Suggested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Markus Reichl <m.reichl@fivetechno.de>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
While trying using a peripheral clock on a driver, I saw that the clock
pointer returned by the provider was NULL.
The problem was a missing indirection. It was the pointer stored in the
hws array which needed to be updated not the value it contains.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: 8ca4746a78 ("clk: mvebu: Add the peripheral clock driver for Armada 3700")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Only propose the mediatek clock drivers on this platform, unless
build-testing.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Shunli Wang <shunli.wang@mediatek.com>
Cc: James Liao <jamesjj.liao@mediatek.com>
Cc: Erin Lo <erin.lo@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/clk/samsung/clk-exynos-audss.ko | grep alias
alias: platform:exynos-audss-clk
After this patch:
$ modinfo drivers/clk/samsung/clk-exynos-audss.ko | grep alias
alias: platform:exynos-audss-clk
alias: of:N*T*Csamsung,exynos5420-audss-clockC*
alias: of:N*T*Csamsung,exynos5420-audss-clock
alias: of:N*T*Csamsung,exynos5410-audss-clockC*
alias: of:N*T*Csamsung,exynos5410-audss-clock
alias: of:N*T*Csamsung,exynos5250-audss-clockC*
alias: of:N*T*Csamsung,exynos5250-audss-clock
alias: of:N*T*Csamsung,exynos4210-audss-clockC*
alias: of:N*T*Csamsung,exynos4210-audss-clock
Fixes: 4d252fd571 ("clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver")
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The 3rd argument of regmap_read() takes a pointer to unsigned int.
This driver is saved just because u32 happens to be typedef'ed as
unsigned int, but we should not rely on that fact. Change the
variable type just in case.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
I do not know why, but I missed to add this compatible string in
the initial commit of this driver.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The intention was to enable the checks if debugging is enabled, not
disabled.
Fixes: f793d1e517 ("clk: shmobile: Add new CPG/MSSR driver core")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The R-Car Gen3 CPG/MSSR driver uses a mix of clk_readl()/clk_writel()
and readl()/writel() to access the clock registers. Settle on the
generic readl()/writel().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
The Renesas CPG/MSSR driver core uses a mix of clk_readl()/clk_writel()
and readl()/writel() to access the clock registers. Settle on the
generic readl()/writel().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Use the actual function name in the function documentation.
Issue detected using Coccinelle (http://coccinelle.lip6.fr/)
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
rockchip_clk_register_ddrclk should not return NULL when failing
to call clk_register, otherwise rockchip_clk_register_branches
prints "unknown clock type". The actual case is that it's a known
clock type but we fail to register it, which may makes user confuse
the reason of failure. And the pr_err here is pointless as
rockchip_clk_register_branches will also print the similar message.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
These updates have been kept in a separate branch mostly because
they rely on updates to the respective clk drivers to keep the
shared header files in sync.
- The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an
automotive SoC similar to the ⅹ8a7795 chip we already support, but
the dts changes rely on a clock driver change that has been
merged for v4.9 through the clk tree.
- The Amlogic meson-gxbb (S905) platform gains support for a few
drivers merged through our tree, in particular the network and
usb driver changes are required and included here, and also
the clk tree changes.
- The Allwinner platforms have seen a large-scale change to their
clk drivers and the dts file updates must come after that.
This includes the newly added Nextthing GR8 platform, which is
derived from sun5i/A13.
- Some integrator (arm32) changes rely on clk driver changes.
- A single patch for lpc32xx has no such dependency but wasn't
added until just before the merge window
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late DT updates from Arnd Bergmann:
"These updates have been kept in a separate branch mostly because they
rely on updates to the respective clk drivers to keep the shared
header files in sync.
- The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an
automotive SoC similar to the ⅹ8a7795 chip we already support, but
the dts changes rely on a clock driver change that has been merged
for v4.9 through the clk tree.
- The Amlogic meson-gxbb (S905) platform gains support for a few
drivers merged through our tree, in particular the network and usb
driver changes are required and included here, and also the clk
tree changes.
- The Allwinner platforms have seen a large-scale change to their clk
drivers and the dts file updates must come after that. This
includes the newly added Nextthing GR8 platform, which is derived
from sun5i/A13.
- Some integrator (arm32) changes rely on clk driver changes.
- A single patch for lpc32xx has no such dependency but wasn't added
until just before the merge window"
* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits)
ARM: dts: lpc32xx: add device node for IRAM on-chip memory
ARM: dts: sun8i: Add accelerometer to polaroid-mid2407pxe03
ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board
ARM: dts: sun8i: add pinmux for UART1 at PG
dts: sun8i-h3: add I2C0-2 peripherals to H3 SOC
dts: sun8i-h3: add pinmux definitions for I2C0-2
dts: sun8i-h3: associate exposed UARTs on Orange Pi Boards
dts: sun8i-h3: split off RTS/CTS for UART1 in seperate pinmux
dts: sun8i-h3: add pinmux definitions for UART2-3
ARM: dts: sun9i: a80-optimus: Disable EHCI1
ARM: dts: sun9i: cubieboard4: Add AXP806 PMIC device node and regulators
ARM: dts: sun9i: a80-optimus: Add AXP806 PMIC device node and regulators
ARM: dts: sun9i: cubieboard4: Declare AXP809 SW regulator as unused
ARM: dts: sun9i: a80-optimus: Declare AXP809 SW regulator as unused
ARM: dts: sun8i: Add touchscreen node for sun8i-a33-ga10h
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2809pxe04
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2407pxe03
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-inet86dz
ARM: dts: sun8i: Add touchscreen node for sun8i-a23-gt90h
ARM64: dts: meson-gxbb-vega-s95: Enable USB Nodes
...
Driver updates for ARM SoCs, including a couple of newly added drivers:
- The Qualcomm external bus interface 2 (EBI2), used in some of their
mobile phone chips for connecting flash memory, LCD displays or
other peripherals
- Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for the
EFUSE based on that firmware interface.
- Perf support for the AppliedMicro X-Gene performance monitor unit
- Reset driver for STMicroelectronics STM32
- Reset driver for SocioNext UniPhier SoCs
Aside from these, there are minor updates to SoC-specific bus,
clocksource, firmware, pinctrl, reset, rtc and pmic drivers.
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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, including a couple of newly added
drivers:
- The Qualcomm external bus interface 2 (EBI2), used in some of their
mobile phone chips for connecting flash memory, LCD displays or
other peripherals
- Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for
the EFUSE based on that firmware interface.
- Perf support for the AppliedMicro X-Gene performance monitor unit
- Reset driver for STMicroelectronics STM32
- Reset driver for SocioNext UniPhier SoCs
Aside from these, there are minor updates to SoC-specific bus,
clocksource, firmware, pinctrl, reset, rtc and pmic drivers"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits)
bus: qcom-ebi2: depend on HAS_IOMEM
pinctrl: mvebu: orion5x: Generalise mv88f5181l support for 88f5181
clk: mvebu: Add clk support for the orion5x SoC mv88f5181
dt-bindings: EXYNOS: Add Exynos5433 PMU compatible
clocksource: exynos_mct: Add the support for ARM64
perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver
Documentation: Add documentation for APM X-Gene SoC PMU DTS binding
MAINTAINERS: Add entry for APM X-Gene SoC PMU driver
bus: qcom: add EBI2 driver
bus: qcom: add EBI2 device tree bindings
rtc: rtc-pm8xxx: Add support for pm8018 rtc
nvmem: amlogic: Add Amlogic Meson EFUSE driver
firmware: Amlogic: Add secure monitor driver
soc: qcom: smd: Reset rx tail rather than tx
memory: atmel-sdramc: fix a possible NULL dereference
reset: hi6220: allow to compile test driver on other architectures
reset: zynq: add driver Kconfig option
reset: sunxi: add driver Kconfig option
reset: stm32: add driver Kconfig option
reset: socfpga: add driver Kconfig option
...
The cleanups for v4.9 are a little larger that usual, but thankfully
that is almost exclusively due to removing a significant number of
files that have become obsolete after the still ongoing conversion
of old board files to devicetree.
- for mach-omap2, which is still the largest platform in arch/arm/,
the conversion to DT is finally complete after the Nokia N900 is
now fully supported there, along with the omap3 LDP, and we can
remove those two board files.
If no regressions are found, another large cleanup for the platform
will happen as a follow-up, removing dead code and restructuring
the platform based on being DT-only.
- In mach-imx, similar work is ongoing, but has not come that far.
This time, we remove the obsolete board file for the i.MX1
generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now DT-only.
The remaining board files are for i.MX2 and i.MX3 machines
based on old ARM926 or ARM1136 cores that should work with DT
in principle.
- realview has just been converted from board files to DT, and a lot
of code gets removed in the process. This is the last
ARM/Keil/Versatile derived platform that was still using board
files, the other ones being integrator, versatile and vexpress.
We can probably merge the remaining code into a single directory
in the near future.
- clps711x had completed the conversion in v4.8, but we accidentally
left the files in place that should have been deleted then.
Conflicts: two files deleted here have been modified upstream,
the changes can be discarded.
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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann:
"The cleanups for v4.9 are a little larger that usual, but thankfully
that is almost exclusively due to removing a significant number of
files that have become obsolete after the still ongoing conversion of
old board files to devicetree.
- for mach-omap2, which is still the largest platform in arch/arm/,
the conversion to DT is finally complete after the Nokia N900 is
now fully supported there, along with the omap3 LDP, and we can
remove those two board files. If no regressions are found, another
large cleanup for the platform will happen as a follow-up, removing
dead code and restructuring the platform based on being DT-only.
- In mach-imx, similar work is ongoing, but has not come that far.
This time, we remove the obsolete board file for the i.MX1
generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now
DT-only. The remaining board files are for i.MX2 and i.MX3 machines
based on old ARM926 or ARM1136 cores that should work with DT in
principle.
- realview has just been converted from board files to DT, and a lot
of code gets removed in the process. This is the last
ARM/Keil/Versatile derived platform that was still using board
files, the other ones being integrator, versatile and vexpress. We
can probably merge the remaining code into a single directory in
the near future.
- clps711x had completed the conversion in v4.8, but we accidentally
left the files in place that should have been deleted then"
* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM
ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly
ARM: imx: (trivial) fix typo and grammar
ARM: clps711x: remove extraneous files
ARM: imx: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module
ARM: imx: remove platform-mxc_rnga
ARM: realview: imply device tree boot
ARM: realview: no need to select SMP_ON_UP explicitly
ARM: realview: delete the RealView board files
ARM: imx: no need to select SMP_ON_UP explicitly
ARM: i.MX: Move SOC_IMX1 into 'Device tree only'
ARM: i.MX: Remove i.MX1 non-DT support
ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support
ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support
ARM: mxs: remove obsolete startup code for TX28
ARM: i.MX31 iomux: remove duplicates with alternate name
ARM: i.MX31 iomux: remove plain duplicates
ARM: OMAP2+: Drop legacy board file for LDP
...
This patch adds clock support to Loongson1C SoC.
Signed-off-by: Yang Ling <gnaygnil@gmail.com>
Acked-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Make use of GENMASK instead of open coding the equivalent operation,
and update the PLL formula.
Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch updates some clock names of Loongson1B,
and adds AC97, DMA and NAND clock.
Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Factor out the common functions into loongson1/clk.c
to support both Loongson1B and Loongson1C. And, put
the rest into loongson1/clk-loongson1b.c.
Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Clock driver should be registered with an earlier initcall than
module_init which is used by most of client device drivers. Otherwise,
probing of these client drivers will likely be deferred due to that
calls into clk API will return -EPROBE_DEFER.
Deferred probing is not a problem for most subsystems, but could bring
some side effect for particular subsystem, like display. On ZX296718
platform, we get Linux logo and boot log lost from display device, just
because the DRM/KMS driver gets -EPROBE_DEFER from devm_clk_get() call.
Let's use core_initcall (qcom and a few other clk drivers use that) for
driver registration to avoid those unnecessary -EPROBE_DEFER and get rid
of the side effect with ZX296718 display system.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Original commit, which added support for Armada CP110 system controller
used global variables for storing all clock information. It worked
fine for Armada 7k SoC, with single CP110 block. After dual-CP110 Armada 8k
was introduced, the data got overwritten and corrupted.
This patch fixes the issue by allocating resources dynamically in the
driver probe and storing it as platform drvdata.
Fixes: d3da3eaef7 ("clk: mvebu: new driver for Armada CP110 system ...")
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Armada CP110 system controller comprises its own routine responsble
for registering gate clocks. Among others 'flags' field in
struct clk_init_data was not set, using a random values, which
may cause an unpredicted behavior.
This patch fixes the problem by resetting all fields of clk_init_data
before assigning values for all gated clocks of Armada 7k/8k SoCs family.
Fixes: d3da3eaef7 ("clk: mvebu: new driver for Armada CP110 system ...")
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Free memory mapping, if lpc32xx_clk_init is not successful.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Referring to the u-boot sources for the Netgear WNR854T, add support
for the mv88f5181.
[gregory.clement@free-electrons.com: fix commit title]
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Free memory mapping if init is not successful.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
There's been a copy and paste mistake in the A23 and A33 from the H3,
leading in the reset offset for the UART and I2C.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Assume that if the oscillator is enabled (OSC32EN bit is present), the
delay has already elapsed as the bootloader probably waited for the
oscillator to settle. This could waste up to 1.2s.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Starting with sama5d4, the crystal oscillator is always enabled at startup
and the SCKC doesn't have an OSC32EN bit anymore.
Add support for that new controller.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Move all clocks related to the slow clock controller to sckc.c. This avoids
extern definitions and allows to remove sckc.h
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[sboyd@codeaurora.org: Mark some functions static]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Initialize the GPU clock muxes to sane inputs. Until now they have
not been changed from their default values, which means that both
GPU3D shader and GPU2D core were fed by clock inputs whose rates
exceed the maximium allowed frequency of the cores by as much as
200MHz.
This fixes a severe GPU stability issue on i.MX6DL.
Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The current clock tree only implements the minimal set of differences
between the i.MX6Q and the i.MX6DL, but that doesn't really reflect
reality.
Apply the following fixes to match the RM:
- DL has no GPU3D_SHADER_SEL/PODF, the shader domain is clocked by
GPU3D_CORE
- GPU3D_SHADER_SEL/PODF has been repurposed as GPU2D_CORE_SEL/PODF
- GPU2D_CORE_SEL/PODF has been repurposed as MLB_SEL/PODF
Cc: stable@vger.kernel.org
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
- media: update IR support for newer SoCs
- firmware: add secure monitor driver
- net: new stmmac glue driver
- usb: udd DWC2 support for meson-gxbb
- clocks: expose more clock IDs for use by DT
- DT binding updates
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Merge tag 'amlogic-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/late
Pull "Amlogic driver updates for v4.9, 2nd round" from Kevin Hilman:
- media: update IR support for newer SoCs
- firmware: add secure monitor driver
- net: new stmmac glue driver
- usb: udd DWC2 support for meson-gxbb
- clocks: expose more clock IDs for use by DT
- DT binding updates
* tag 'amlogic-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic: (21 commits)
clk: gxbb: expose i2c clocks
clk: gxbb: expose USB clocks
clk: gxbb: expose spifc clock
clk: gxbb: expose MPLL2 clock for use by DT
Documentation: dt-bindings: Add documentation for the Meson USB2 PHYs
usb: dwc2: add support for Meson8b and GXBB SoCs
net: stmmac: update the module description of the dwmac-meson driver
net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC
stmmac: introduce get_stmmac_bsp_priv() helper
net: dt-bindings: Document the new Meson8b and GXBB DWMAC bindings
clk: meson-gxbb: Export PWM related clocks for DT
meson: clk: Add support for clock gates
gxbb: clk: Adjust MESON_GATE macro to be shared with meson8b
clk: meson: Copy meson8b CLKID defines to private header file
meson: clk: Rename register names according to Amlogic datasheet
meson: clk: Move register definitions to meson8b.h
clk: meson: Rename meson8b-clkc.c to reflect gxbb naming convention
nvmem: amlogic: Add Amlogic Meson EFUSE driver
firmware: Amlogic: Add secure monitor driver
media: rc: meson-ir: Add support for newer versions of the IR decoder
...
Add clock data arrays for all UniPhier SoCs with a binding document.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This includes UniPhier clock driver code, except SoC-specific
data arrays.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This clock is present on BCM53573 devices (including BCM47189) that use
Cortex-A7. ILP is a part of PMU (Power Management Unit) multi-function
device so we use syscon (and regmap) for it.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@codeaurora.org: Remove 0 from clk_init_data to silence sparse]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The zx296718 clock driver has a creative way of assigning the register
values for each clock, by initializing an __iomem pointer to an
offset and then later adding the base (from ioremap) on top
with a cast to u64. This fail on all 32-bit architectures during
compile testing:
drivers/clk/zte/clk-zx296718.c: In function 'top_clocks_init':
drivers/clk/zte/clk-zx296718.c:554:35: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
zx296718_pll_clk[i].reg_base += (u64)reg_base;
drivers/clk/zte/clk-zx296718.c:579:29: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
drivers/clk/zte/clk-zx296718.c:592:31: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
It would be nice to avoid all the casts, but I decided to simply
shut up the warnings by changing the type from u64 to uintptr_t,
which does the right thing in practice.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ca0233285a ("clk: zx: register ZX296718 clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Use the builtin_platform_driver() macro to make the code simpler.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The register offset for the mipi-csi clk is off by 4, a copy paste
error from the mipi-dsi clk.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The PLLs have a "lock" bit in their configuration registers which
indicate if the PLL has locked on to the requested clock rate. We
check this bit in the .set_rate op. The PLL cannot lock on if it's
not running, which might be a false positive (warning).
Set the CLK_SET_RATE_UNGATE flag for all PLLs so whenever clk_set_rate
is called on them, they get enabled and the "lock" check is really
checking the PLL.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The LCD controller and HDMI controller use the LCDx-CHy and HDMI clocks
to generate their dot clocks. To be able to generate a full range of
possible clock rates, the parent PLL clock rates should also be changed.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch configures the semi-synchronous mode of the video clocks
of clkgenD2.
Signed-off-by: Olivier Bideau <olivier.bideau@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch allows fine tuning of the quads FS for audio clocks
accuracy.
Signed-off-by: Olivier Bideau <olivier.bideau@st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Use an algorithm instead of a table to compute clocks for fs660c32
synthesizer.
During a video playback we need to adjust audio & video frequencies.
A table can't cover all HDMI resolutions and audio adjustment.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch reworks the clock binding to avoid too much detail in DT.
Now we have only compatible string per type of clock
(remark from Rob https://lkml.org/lkml/2016/5/25/492)
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
STiH415 and STiH416 platforms are no longer used.
these platforms will be deprecated for the next kernel.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers in this driver, 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: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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.
Cc: Eric Anholt <eric@anholt.net>
Cc: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Make the clocks visible options that can be selected by anyone. This
avoids the problems of:
1) Select is a reverse dependency and is hard for people to understand
and can sometimes be a pain to track down
2) Build coverage goes down because configs are hidden
3) Code bloat
Patch suggested by Stephen Boyd
Signed-off-by: Jon Mason <jonmason@broadcom.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add X-Gene PMD clock support.
PMD clock is implemented for a single register field.
Output rate = parent_rate * (denominator - scale) / denominator
with
- denominator = bitmask of register field + 1
- scale = values of register field
For example, for bitmask is 0x7, denominator will be 8 and scale
will be computed and programmed accordingly.
Signed-off-by: Hoan Tran <hotran@apm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The ZX296718 clocks are statically listed and registered. More
clock will be added later.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add power down bit and pll lock bit in pll config structure
to ease new SoC support.
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Alex Elder <elder@linaro.org>
[sboyd@codeaurora.org: Save a line]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This fixes
[ 0.000000] i.MX clk 82: register failed with -17
because the name is duplicated.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Fixes: 3713e3f5e9 ("clk: imx35: define two clocks for rtc")
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
I2C and AO_I2C clocks are needed for the i2c driver, expose to DT
(and comment out in clk driver)
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
USB0_DDR_BRIDGE and USB1_DDR_BRIDGE1 are needed for the related
dwc2 usb controller. USB, USB0 and USB1 are needed for the PHYs.
Expose these clocks to DT and comment out in clk driver.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
SPI clock is needed for the spifc driver, expose to DT
(and comment out in the clk driver)
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
This exposes the MPLL2 clock as this is one of the input clocks of the
ethernet controller's internal mux.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
The addition of many gate clocks added two entries in an array for
the same value:
drivers/clk/meson/meson8b.c:479:10: error: initialized field overwritten [-Werror=override-init]
[CLKID_GCLK_VENCI_INT] = &meson8b_gclk_venci_int.hw,
[CLKID_GCLK_VENCI_INT] = &meson8b_gclk_vencp_int.hw,
This was clearly an accident, and since all other identifiers are
listed in the order in which they are defined, I'm changing the
first one to CLKID_GCLK_VENCI_INT0, making it all consistent again.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: e31a1900c1 ("meson: clk: Add support for clock gates")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
