The __clk_get() function is practically a private clk implementation
detail now. No architecture defines it, and given that new code should
be using the common clk framework there isn't a need for it to keep
existing just to serve clkdev purposes. Let's fold it into the
__clk_create_clk() function and make that a little more generic by
renaming it to clk_hw_create_clk(). This will allow the framework to
create a struct clk handle to a particular clk_hw pointer and link it up
as a consumer wherever that's needed.
Doing this also lets us get rid of the __clk_free_clk() API that had to
be kept in sync with __clk_put(). Splitting that API up into the "link
and unlink from consumer list" phase and "free the clk pointer" phase
allows us to reuse that logic in a couple places, simplifying the code.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
i.MX8MQ has clock gate for each GPIO bank, add them
into clock tree for GPIO driver to manage.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Correct cpu clock name from ca57 to ca72 since MT8173 does use cortex-a72.
Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Make the entire combination of plls to be one single clock. The parents used
for bypasses are specified each as an index in the parents list.
The determine_rate does a lookup throughout all the possible combinations
for all the divs and returns the best possible 'setup' which in turn is used
by set_rate later to set up all the divs and bypasses.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Tested-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
On NXP's i.MX SoCs with system controller inside, CPU frequency
scaling can ONLY be done by system controller firmware, and it
can ONLY be requested from secure mode, so Linux kernel has to
call ARM SMC to trap to ARM-Trusted-Firmware to request system
controller firmware to do CPU frequency scaling.
This patch adds i.MX system controller CPU frequency scaling support,
it reuses cpufreq-dt driver and implement the CPU frequency scaling
inside SCU clock driver.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Currently, DRAM-related clocks are not marked with CLK_IS_CRITICAL
for MT6797. This causes memory corruption when the system is
booted without clk_ignore_unused.
This patch marks MUX ddrphycfg_sel as well as gates infra_dramc_f26m
and infra_dramc_b_f26m as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This is required to mark gates as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Acked-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This is required to mark outputs of certain MUXes as CLK_IS_CRITICAL.
Signed-off-by: Jasper Mattsson <jasu@njomotys.info>
Acked-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The PCIe PIPE clock in the GCC is fed by the PIPE clock coming from the
PHY, describe this relationship.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fixes gcc '-Wunused-but-set-variable' warning:
drivers/clk/ingenic/cgu.c: In function 'ingenic_pll_recalc_rate':
drivers/clk/ingenic/cgu.c:86:15: warning:
variable 'enable' set but not used [-Wunused-but-set-variable]
It's not used after commit ab27eb4bc3 ("clk: ingenic: Add code to
enable/disable PLLs")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This register read is a leftover of a previous read/modify/write. We now use
regmap_update_bits(), so we don't need it anymore.
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The MUX clock of dpi1_sel should select the closet clock for itself.
We could add this flag to enable this function of MUX in CCF.
Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: wangyan wang <wangyan.wang@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add MUX_GATE_FLAGS_2 for the clock which needs to set two falgs.
Such as some mux need to set the flags of "CLK_MUX_ROUND_CLOSEST".
Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: wangyan wang <wangyan.wang@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The 'div' field does not represent a number of bits used to divide
(understand: right-shift) the divider, but a number itself used to
divide the divider.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Take a parent rate of 180 MHz, and a requested rate of 4.285715 MHz.
This results in a theorical divider of 41.999993 which is then rounded
up to 42. The .round_rate function would then return (180 MHz / 42) as
the clock, rounded down, so 4.285714 MHz.
Calling clk_set_rate on 4.285714 MHz would round the rate again, and
give a theorical divider of 42,0000028, now rounded up to 43, and the
rate returned would be (180 MHz / 43) which is 4.186046 MHz, aka. not
what we requested.
Fix this by rounding up the divisions.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Maarten ter Huurne <maarten@treewalker.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
for debugfs files.
Semantic patch information:
Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
imposes some significant overhead as compared to
DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().
Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We intended to print "ret" but there is a copy and paste bug from the
previous error message.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stop the search for parent rate when exact match is found.
This makes for 3 clk_round_rate() calls instead of 64 of them on
SAMA5D2-based board when searching for 12.288MHz clock.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
clk-lpss.h is solely x86 related header. Move it to correct folder.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Custom approximation of fractional-divider may not need parent clock
rate checking. For example Rockchip SoCs work fine using grand parent
clock rate even if target rate is greater than parent.
This patch checks parent clock rate only if CLK_SET_RATE_PARENT flag
is set.
For detailed example, clock tree of Rockchip I2S audio hardware.
- Clock rate of CPLL is 1.2GHz, GPLL is 491.52MHz.
- i2s1_div is integer divider can divide N (N is 1~128).
Input clock is CPLL or GPLL. Initial divider value is N = 1.
Ex) PLL = CPLL, N = 10, i2s1_div output rate is
CPLL / 10 = 1.2GHz / 10 = 120MHz
- i2s1_frac is fractional divider can divide input to x/y, x and
y are 16bit integer.
CPLL --> | selector | ---> i2s1_div -+--> | selector | --> I2S1 MCLK
GPLL --> | | ,--------------' | |
`--> i2s1_frac ---> | |
Clock mux system try to choose suitable one from i2s1_div and
i2s1_frac for master clock (MCLK) of I2S1.
Bad scenario as follows:
- Try to set MCLK to 8.192MHz (32kHz audio replay)
Candidate setting is
- i2s1_div: GPLL / 60 = 8.192MHz
i2s1_div candidate is exactly same as target clock rate, so mux
choose this clock source. i2s1_div output rate is changed
491.52MHz -> 8.192MHz
- After that try to set to 11.2896MHz (44.1kHz audio replay)
Candidate settings are
- i2s1_div : CPLL / 107 = 11.214945MHz
- i2s1_frac: i2s1_div = 8.192MHz
This is because clk_fd_round_rate() thinks target rate
(11.2896MHz) is higher than parent rate (i2s1_div = 8.192MHz)
and returns parent clock rate.
Above is current upstreamed behavior. Clock mux system choose
i2s1_div, but this clock rate is not acceptable for I2S driver, so
users cannot replay audio.
Expected behavior is:
- Try to set master clock to 11.2896MHz (44.1kHz audio replay)
Candidate settings are
- i2s1_div : CPLL / 107 = 11.214945MHz
- i2s1_frac: i2s1_div * 147/6400 = 11.2896MHz
Change i2s1_div to GPLL / 1 = 491.52MHz at same
time.
If apply this commit, clk_fd_round_rate() calls custom approximate
function of Rockchip even if target rate is higher than parent.
Custom function changes both grand parent (i2s1_div) and parent
(i2s_frac) settings at same time. Clock mux system can choose
i2s1_frac and audio works fine.
Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
[sboyd@kernel.org: Make function into a macro instead]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Several clock controller drivers define a list of clk_hw devices, and then
register those devices in probe() before using common code to process the
rest of initialization. Extend the common code to accept a list of clk_hw
devices to process, thus eliminating many duplicate implementations.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Suggested-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add common clock driver for Actions Semi S500 SoC.
Signed-off-by: Edgar Bernardi Righi <edgar.righi@lsitec.org.br>
[Mani: cleaned up the driver]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
S500 SoC requires configurable delay for different PLLs. Hence, add
a separate macro for declaring a PLL with configurable delay and also
modify the existing OWL_PLL_NO_PARENT macro to use default delay so
that no need to modify the existing S700/S900 drivers.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It calls another __init marked function and thus causes a section
mismatch if we don't mark it this way.
Fixes: ba5625c3e2 ("clk: imx: Add clock driver support for imx8mm")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The CFG/M/N/D registers are at an offset of 0x20 from the CMD register
only for blsp1_uart3 clock, so add it for uart3 only.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The RCG CFG/M/N/D register base could be at a different offset than
the CMD register, so introduce a cfg_offset to identify the offset
with respect to the CMD RCGR register.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fix the bit width of the hse rtc divider because it's off by one.
Fixes: 2c87c9d331 ("clk: stm32mp1: add RTC clock")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The divisor of ethptp_k and ck_hse_rtc clocks is: 'value register
plus one'.
Then CLK_DIVIDER_ALLOW_ZERO flag has no effect and is useless here.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The divider of HSI (clk-hsi-div) is power of two divider.
Fixes: 9bee94e7b7 ("clk: stm32mp1: Introduce STM32MP1 clock driver")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
index 8: ck_mcu is divided by 256 (not 512)
Fixes: e51d297e9a ("clk: stm32mp1: add Sub System clocks")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
ck_csi is used for IO compensation so it should be
considered as "always-on" and kept on.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
STM32MP1 clock IP offers lots of Kernel clocks that are shared
by multiple IP's at the same time.
Then boot loader applies a clock tree that allows to use all IP's
at same time and with the maximum of performance.
Not change parents on a change rate on kernel clocks ensures
the integrity of the system.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fixes parent clock for axi, fdcan, sai and adc12 clocks.
Fixes: e51d297e9a ("clk: stm32mp1: add Sub System clocks")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
I noticed that modprobe clk-twl6040 can fail after a cold boot with:
abe_cm:clk:0010:0: failed to enable
...
Unhandled fault: imprecise external abort (0x1406) at 0xbe896b20
WARNING: CPU: 1 PID: 29 at drivers/clk/clk.c:828 clk_core_disable_lock+0x18/0x24
...
(clk_core_disable_lock) from [<c0123534>] (_disable_clocks+0x18/0x90)
(_disable_clocks) from [<c0124040>] (_idle+0x17c/0x244)
(_idle) from [<c0125ad4>] (omap_hwmod_idle+0x24/0x44)
(omap_hwmod_idle) from [<c053a038>] (sysc_runtime_suspend+0x48/0x108)
(sysc_runtime_suspend) from [<c06084c4>] (__rpm_callback+0x144/0x1d8)
(__rpm_callback) from [<c0608578>] (rpm_callback+0x20/0x80)
(rpm_callback) from [<c0607034>] (rpm_suspend+0x120/0x694)
(rpm_suspend) from [<c0607a78>] (__pm_runtime_idle+0x60/0x84)
(__pm_runtime_idle) from [<c053aaf0>] (sysc_probe+0x874/0xf2c)
(sysc_probe) from [<c05fecd4>] (platform_drv_probe+0x48/0x98)
After searching around for a similar issue, I came across an earlier fix
that never got merged upstream in the Android tree for glass-omap-xrr02.
There is patch "MFD: twl6040-codec: Implement PDMCLK cold temp errata"
by Misael Lopez Cruz <misael.lopez@ti.com>.
Based on my observations, this fix is also needed when cold booting
devices, and not just for deeper idle modes. Since we now have a clock
driver for pdmclk, let's fix the issue in twl6040_pdmclk_prepare().
Cc: Misael Lopez Cruz <misael.lopez@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The current implementation of gpio-gate-clk enables/disables the clock
using the GPIO in the ->enable() and ->disable() clock callbacks. This
requires the GPIO to be configurable in atomic contexts. While it is
the case for most memory-mapped GPIO controllers, it is not the case
for GPIO expanders on I2C or SPI.
This commit extends the gpio-gate-clk to check whether the GPIO calls
require sleeping or not. If sleeping is not required, the current
implementation based on ->enable()/->disable() is kept. However, if
sleeping is needed, we instead implement the logic in the ->prepare()
and ->unprepare() hooks. Thanks to this, a gate clock connected to a
GPIO on a GPIO expander can be controlled with the existing driver.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
[sboyd@kernel.org: Mark clk ops static]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The clk-rpmh driver only supports on and off RPMh clock resources. Let's
extend the driver by adding support for clocks that are managed by a
different type of RPMh resource known as Bus Clock Manager(BCM). The BCM
is a configurable shared resource aggregator that scales performance
based on a set of frequency points. The Qualcomm IP Accelerator (IPA)
clock is an example of a resource that is managed by the BCM and this a
requirement from the IPA driver in order to scale its core clock.
Signed-off-by: David Dai <daidavid1@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
These are in fact two clocks, they shouldn't be exposed as one. One is
required for accessing LCD controller registers (peripheral clock), while
other (AXI clock) can be optionally used as a pixel clock source for the
panel.
LCDC can alternatively use different clocks than the Display 1 AXI clock
for generating the pixel clock: the second AXI clock (fixed in this
commit too), the HDMI PLL, or the AXI bus clock.
They should really be controlled independently.
Link: https://lists.freedesktop.org/archives/dri-devel/2019-January/203975.html
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Need to set the update bit in UNIPHIER_CLK_CPUGEAR_UPD to update
the CPU-gear value.
Fixes: d08f1f0d59 ("clk: uniphier: add CPU-gear change (cpufreq) support")
Cc: linux-stable@vger.kernel.org
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.
This patch fixes the following warnings:
drivers/clk/samsung/clk-s3c2443.c: In function ‘s3c2443_common_clk_init’:
drivers/clk/samsung/clk-s3c2443.c:390:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
samsung_clk_register_alias(ctx, s3c2450_aliases,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ARRAY_SIZE(s3c2450_aliases));
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/clk/samsung/clk-s3c2443.c:393:2: note: here
case S3C2416:
^~~~
Warning level 3 was used: -Wimplicit-fallthrough=3
Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.
This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Platform driver driver_override field should not be initialized from
const memory because the core later kfree() it. If driver_override is
manually set later through sysfs, kfree() of old value leads to:
$ echo "new_value" > /sys/bus/platform/drivers/.../driver_override
kernel BUG at ../mm/slub.c:3960!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
...
(kfree) from [<c058e8c0>] (platform_set_driver_override+0x84/0xac)
(platform_set_driver_override) from [<c058e908>] (driver_override_store+0x20/0x34)
(driver_override_store) from [<c031f778>] (kernfs_fop_write+0x100/0x1dc)
(kernfs_fop_write) from [<c0296de8>] (__vfs_write+0x2c/0x17c)
(__vfs_write) from [<c02970c4>] (vfs_write+0xa4/0x188)
(vfs_write) from [<c02972e8>] (ksys_write+0x4c/0xac)
(ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
The clk-exynos5-subcmu driver uses override only for the purpose of
creating meaningful names for children devices (matching names of power
domains, e.g. DISP, MFC). The driver_override was not developed for
this purpose so just switch to default names of devices to fix the
issue.
Fixes: b06a532bf1 ("clk: samsung: Add Exynos5 sub-CMU clock driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
During initialization of subdevices if platform_device_alloc() failed,
returned NULL pointer will be later dereferenced. Add proper error
paths to exynos5_clk_register_subcmu(). The return value of this
function is still ignored because at this stage of init there is nothing
we can do.
Fixes: b06a532bf1 ("clk: samsung: Add Exynos5 sub-CMU clock driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the ARM clock as imx_clk_cpu type.
Will be used by cpufreq.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The arm pll bypass needs to propagate the rate upwards
in order for the cpufreq to work.
Fixes: b80522040c ("clk: imx: Add clock driver for i.MX8MQ CCM")
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the entry for the CLKO1 clock.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The CLKO2 clock source select list is the following as per the i.MX8M
Reference Manual:
000 - 25M_REF_CLK
001 - SYSTEM_PLL2_DIV5
010 - SYSTEM_PLL1_DIV2
011 - SYSTEM_PLL2_DIV6
100 - SYSTEM_PLL3_CLK
101 - AUDIO_PLL1_CLK
110 - VIDEO_PLL1_CLK
111 - 32K_REF_CLK
However, in imx8mq_clko2_sels[] only the first four entries are correct.
Fix it by adding the missing "sys3_pll2_out" entry in order to match
the description from the manual.
Fixes: b80522040c ("clk: imx: Add clock driver for i.MX8MQ CCM")
Reported-by: Rogerio Pimentel <rogerio.silva@nxp.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The clocks list is missing the clocks for the M4 core.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
New PLLs are introduced on i.MX8M Mini SOC.
PLL1416X is Integer PLL, PLL1443X is a Frac PLL.
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This adds the missing clock for the SCC2 peripheral unit.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
SCU clock can be used in a similar way by IMX8QXP and IMX8QM SoCs.
Make the driver support "fsl,scu-clk" fallback compatible string
to allow other SoCs to reuse the common part.
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The arrays containing the mux selectors need to be of const pointer
to const char.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The parents needs to be pointer to const pointer to const char.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The parent_names needs to be pointer to const pointer to const char.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The master clock is actually named masterck earlier in the driver. Having
"mck" in the parent list means that it can never be selected.
Fixes: 1eabdc2f9d ("clk: at91: add at91sam9x5 PMCs driver")
Fixes: a2038077de ("clk: at91: add sama5d2 PMC driver")
Fixes: 084b696bb5 ("clk: at91: add sama5d4 pmc driver")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: <stable@vger.kernel.org> # v4.20+
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
nck() looks at the last id in an array and unfortunately,
at91sam9x35_periphck has a sentinel, hence the id is 0 and the calculated
number of peripheral clocks is 1 instead of a maximum of 31.
Fixes: 1eabdc2f9d ("clk: at91: add at91sam9x5 PMCs driver")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: <stable@vger.kernel.org> # v4.20+
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fixes the following sparse warning:
drivers/clk/tegra/clk-tegra124-dfll-fcpu.c:244:18: warning:
symbol 'tegra210_cpu_cvb_tables' was not declared. Should it be static?
Fixes: 2b2dbc2f94 ("clk: tegra: dfll: add CVB tables for Tegra210")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This contains a couple of prerequisite patches to enable CPU frequency
scaling on Tegra210.
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Merge tag 'tegra-for-5.1-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/drivers
clk: tegra: Changes for v5.1-rc1
This contains a couple of prerequisite patches to enable CPU frequency
scaling on Tegra210.
* tag 'tegra-for-5.1-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
clk: tegra: dfll: build clk-dfll.c for Tegra124 and Tegra210
clk: tegra: dfll: add CVB tables for Tegra210
clk: tegra: dfll: round down voltages based on alignment
clk: tegra: dfll: support PWM regulator control
clk: tegra: dfll: CVB calculation alignment with the regulator
clk: tegra: dfll: registration for multiple SoCs
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Code might use autoidle api with clocks not being omap2 clocks,
so check if clock type is really omap2.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Multiple users might deny autoidle on a clock. So we should have some
counting here, also according to the comment in _setup_iclk_autoidle().
Also setting autoidle regs is not atomic, so there is another reason
for locking.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Add a generic API for initializing clocks of clk_hw_omap type clocks,
and convert the whole TI clock driver suite to use this for registering
the clocks. Also, get rid of the now redundant API for adding the clocks
to the OMAP HW clocks list; instead this is used directly from the
register API.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Remove the usage of CLK_IS_BASIC flag completely from TI clock driver.
In most cases, the use is completely redundant, but in some cases
we need to use the new API to check if the clock is an OMAP clock or not.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
omap2_clk_is_hw_omap can now be used to verify if the provided clk_hw
is an omap HW clock or not. This is done to replace the usage of CLK_IS_BASIC
flag within the TI clock drivers.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Currently the clk_hw_omap list is handled under the autoidle code, but
it should be accessible generically. Add a few APIs towards this, and
update the autoidle code to use the generic implementations.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Two fixes for clock indices, one for the A31 and one for the V3s.
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Merge tag 'sunxi-clk-fixes-for-5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-fixes
Pull Allwinner clock fixes from Maxime Ripard:
Two fixes for clock indices, one for the A31 and one for the V3s.
* tag 'sunxi-clk-fixes-for-5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi: A31: Fix wrong AHB gate number
clk: sunxi-ng: v3s: Fix TCON reset de-assert bit
Fix a typo in the APB clock names by renaming them from "abp" to "apb".
No functional changes.
Fixes: a7d19b05ce ("clk: meson: meson8b: add the CPU clock post divider clocks")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lkml.kernel.org/r/20190210222603.6404-2-martin.blumenstingl@googlemail.com
Add the Amlogic G12A AO Clock and Reset controller driver handling
generation of Always-On clocks :
- AO Clocks and Reset for Always-On modules
- 32K Generation for USB and CEC
- SAR ADC controller clock
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lkml.kernel.org/r/20190212162859.20743-3-narmstrong@baylibre.com
Use devm based clkdev lookup registration to avoid leaking lookup
structures.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
clk-max77686 never clean clkdev lookup at remove. This can cause
oops if clk-max77686 is removed and inserted again. Fix leak by
using new devm clkdev lookup registration. Simplify also error
path by using new devm_of_clk_add_hw_provider.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Clkdev registration lacks of managed registration functions and it
seems few drivers do not drop clkdev lookups at exit. Add
devm_clk_hw_register_clkdev and devm_clk_release_clkdev to ease lookup
releasing at exit.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This adds clk_get_optional() and devm_clk_get_optional() functions to get
optional clocks.
They behave the same as (devm_)clk_get() except where there is no clock
producer. In this case, instead of returning -ENOENT, the function
returns NULL. This makes error checking simpler and allows
clk_prepare_enable, etc to be called on the returned reference
without additional checks.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Russell King <linux@armlinux.org.uk>
[sboyd@kernel.org: Document in devres.txt]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It's not immediately obvious from the code that failure to get a
clock provider can return either -ENOENT or -EINVAL. Therefore, add
a comment to highlight this.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Russell King <linux@armlinux.org.uk>
[sboyd@kernel.org: Fix comment to be proper C with ==]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Tegra210 has a DFLL as well and can share the majority of the code with
the Tegra124 implementation. So build the same code for both platforms.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Add CVB tables with different chip characterization, so that we can
generate the customize OPP table that suitable for different chips with
different SKUs.
The parameter 'tune_high_min_millivolts' is first time introduced in
this patch, which didn't use in the DFLL driver for clock and voltage
tuning before. It will be used later when DFLL in high voltage range.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
When generating the OPP table, the voltages are round down with the
alignment from the regulator. The alignment should be applied for
voltages look up as well.
Based on the work of Penny Chiu <pchiu@nvidia.com>.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The DFLL hardware supports two modes (I2C and PWM) for voltage control
when requesting a frequency. In this patch, we introduce PWM mode support.
To support that, we re-organize the LUT for unifying the table for both
cases of I2C and PWM mode. And generate that based on regulator info.
For the PWM-based regulator, we get this info from DT. And do the same as
the case of I2C LUT, which can help to map the PMIC voltage ID and voltages
that the regulator supported.
The other parts are the support code for initializing the DFLL hardware
to support PWM mode. Also, the register debugfs file is slightly
reworked to only show the i2c registers when I2C mode is in use.
Based on the work of Peter De Schrijver <pdeschrijver@nvidia.com>.
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The CVB table contains calibration data for the CPU DFLL based on
process characterization. The regulator step and offset parameters depend
on the regulator supplying vdd-cpu, not on the specific Tegra SKU.
When using a PWM controlled regulator, the voltage step and offset are
determined by the regulator type in use. This is specified in DT. When
using an I2C controlled regulator, we can retrieve them from CPU regulator
Then pass this information to the CVB table calculation function.
Based on the work done of "Peter De Schrijver <pdeschrijver@nvidia.com>"
and "Alex Frid <afrid@nvidia.com>".
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
In a future patch, support for the DFLL in Tegra210 will be introduced.
This requires support for more than 1 set of CVB and CPU max frequency
tables.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The UDC clock is gated when the bit is cleared, not when it is set.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Fixes: 2b555a4b9c ("clk: ingenic: Add missing flag for UDC clock")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
According to 3rd ECO design change,
1. Add new fixed factor clock of audio.
2. Add the parent clocks for audio clock mux.
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This patch adds the TMU clocks to the R8A774C0 SoC.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Describe the RPCSRC internal clock and the RPC[D2] clocks derived from it,
as well as the RPC-IF module clock, in the R-Car V3H (R8A77980) CPG/MSSR
driver.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The RPCSRC internal clock is controlled by the RPCCKCR.DIV[4:3] on all
the R-Car gen3 SoCs except V3M (R8A77970) but the encoding of this field
is different between SoCs; it makes sense to support the most common case
of this encoding in the R-Car gen3 CPG driver...
After adding the RPCSRC clock, we can add the RPC[D2] clocks derived from
it and controlled by the RPCCKCR register on all the R-Car gen3 SoCs except
V3M (R8A77970); the composite clock driver seems handy for this task, using
the spinlock added in the previous patch...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The function used to probe the peripheral clock controller of the arm64
amlogic SoCs is mostly the same. We now have 3 of those controllers so
it is time to factorize things a bit.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201145345.6795-5-jbrunet@baylibre.com
Add the peripheral clock controller found in the g12a SoC family
Signed-off-by: Jian Hu <jian.hu@amlogic.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201145345.6795-4-jbrunet@baylibre.com
The g12a use fractional parameter of 17 useful bits. At the moment, this
parameter in encoded using u16 value. Use this opportunity to switch all
the pll to parameter to unsigned int. This should save us some annoying
trouble shooting when and m and n field eventually grow as well.
This patch also introduce pll multiplier range. On the g12a, the hifi and
gp0 plls are able to lock as long as the following condition is met:
55 <= m/n <= 255.
The param table describing this would be huge which is a waste of memory.
Using ranges, we can save memory. Ranges also help find the best pll
parameter significantly faster since we don't have to try all the possible
settings.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
[jbrunet: fixed fix pll settings calculation with arm32]
Link: https://lkml.kernel.org/r/20190201145345.6795-2-jbrunet@baylibre.com
Initially, the meson clock directory only hosted 2 controllers drivers,
for meson8 and gxbb. At the time, both used the same set of clock drivers
so managing the dependencies was not a big concern.
Since this ancient time, entropy did its job, controllers with different
requirement and specific clock drivers have been added. Unfortunately, we
did not do a great job at managing the dependencies between the
controllers and the different clock drivers. Some drivers, such as
clk-phase or vid-pll-div, are compiled even if they are useless on the
target (meson8). As we are adding new controllers, we need to be able to
pick a driver w/o pulling the whole thing.
The patch aims to clean things up by:
* providing a dedicated CONFIG_ for each clock drivers
* allowing clock drivers to be compiled as a modules, if possible
* stating explicitly which drivers are required by each controller.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-5-jbrunet@baylibre.com
Use CONFIG_ARCH_MESON to let make enter the meson clock directory.
As part of a rework, CONFIG_COMMON_CLK_AMLOGIC is about to be removed.
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-3-jbrunet@baylibre.com
clk-provider.h provides clk_hw_is_prepared(), clk_hw_is_enabled() and
clk_hw_is_prepared() but these symbols are not exported for the
modules which prevents a clock driver using them to be compiled as
a module. Export them to fix the problem.
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190201125841.26785-2-jbrunet@baylibre.com
This function uses a few gotos and doesn't explain why parents and
numbers of parents are being checked before returning different values
for the clk's rate. Document and simplify this function somewhat to make
this better.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fix typo in sssx name, there should be three letters 's'.
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
According to the manual the gate clock for MMC3 is at bit 11, and NAND1
is controlled by bit 12.
Fix the gate bit definitions in the clock driver.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Protect the CPG register read-modify-write sequence with a spinlock.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
There's quite often repeated sequence of a CPG register read-modify-write,
so it seems worth factoring it out into a function -- this saves 68 bytes
of the object code (AArch64 gcc 4.8.5) and simplifies protecting all such
sequences with a spinlock in the next patch...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The PLL-MIPI clock is somewhat special as it has its own LDOs which
need to be turned on for this PLL to actually work and output a clock
signal.
Add the 2 LDO enable bits to the gate bits.
Fixes: 5690879d93 ("clk: sunxi-ng: Add A23 CCU")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
The flags argument here is always 0, and we want to get rid of the flags
member of the clk_fixed_rate struct. So remove this here and just pass 0
when it's used.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It had some documentation, but not kerneldoc style so it wasn't getting
picked up. Add some docs so scripts can pick this function out.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We don't want driver authors to use the struct clk based registration
and provider APIs. Instead, they should use the clk_hw based APIs. Add
some notes in the kerneldoc to this effect.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The clocks of the CPUSS such as "gcc_cpuss_ahb_clk_src" is a CRITICAL
clock and needs to vote on the active only source of XO, so as to keep
the vote as long as CPUSS is active. Similar rbcpr_clk_src is also has
the same requirement.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Fixes: 06391eddb6 ("clk: qcom: Add Global Clock controller (GCC) driver for SDM845")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
One of the more common cases of allocation size calculations is finding
the size of a structure that has a zero-sized array at the end, along
with memory for some number of elements for that array. For example:
struct foo {
int stuff;
void *entry[];
};
instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);
Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:
instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This driver creates a gate clk with the possibility to have multiple
parents. That can cause problems if the common clk framework tries to
call the get_parent() op and gets back a number that's larger than the
number of parents the clk says it supports in
clk_init_data::num_parents. Let's duplicate the clk_ops structure each
time this function is called and drop the get/set parent ops when there
is only one parent. This allows the framework to consider a number
larger than clk_init_data::num_parents as an error condition of the
get_parent() clk op, clearing the way for proper code.
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The ti_clk_parse_divider_data() function is only called from
_get_div_table_from_setup(). That function doesn't look at the return
value but instead looks at the "*table" pointer. In this case, if the
kcalloc() fails then *table is NULL (which means success). It should
instead be an error pointer.
The ti_clk_parse_divider_data() function has two callers. One checks
for errors and the other doesn't. I have fixed it so now both handle
errors.
Fixes: 4f6be5655d ("clk: ti: divider: add driver internal API for parsing divider data")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It's not required to traverse the entire clk tree when the parents array
contains a NULL value. We already have the parent clk_core pointer, so
we can just compare the parent->name and parent_names[i] pointers.
This can be a substantial power improvement in cases where the parent
clk isn't known and that clk is never registered, because a mux having
an unregistered parent name may traverse the clk tree on every
clk_set_rate() call in clk_mux_determine_rate_flags(). This can happen
hundreds of times a second for CPU clks.
This patch is the combination of reverting commit 470b5e2f97 ("clk:
simplify clk_fetch_parent_index() function") and optimizing the
resulting code to never call __clk_lookup() because we already have the
clk_core pointer we're looking for. That optimization went unnoticed
even after commit da0f0b2c3a ("clk: Correct lookup logic in
clk_fetch_parent_index()") tried to optimize this path.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
[sboyd@kernel.org: More description in commit text]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It seems that the kernel has no business managing this clock: once the SP
clock is disabled, it's not sufficient to just enable in order to bring the
SP core back up. Just let the firmware keep it enabled and don't expose it
to drivers.
This reverts commit fc27c2394d.
Link: https://lore.kernel.org/lkml/154783267051.169631.3197836544646625747@swboyd.mtv.corp.google.com/
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
According to the RZ/G Series, 2nd Generation Hardware Manual Rev 0.61,
the parent clock of the DU module clocks on RZ/G2E is S1D1.
Fixes: 906e0a4a6d ("clk: renesas: cpg-mssr: Add r8a774c0 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
According to the datasheet and the reference code from Allwinner, the
bit used to de-assert the TCON reset is bit 4, not bit 3.
Fix it in the V3s CCU driver.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This patch adds the missing CANFD clock to the r8a774a1 specific
clock driver.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This patch adds the missing CANFD clock to the r8a774c0 specific
clock driver.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Instead of relying on a fixed names for the differents input clocks
of the controller, get them through DT.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190116175435.4990-4-jbrunet@baylibre.com
Instead of relying on a fixed name for the xtal clock, claim the
controller input clock trough DT.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190116175435.4990-3-jbrunet@baylibre.com
Instead of relying on a fixed name for the xtal clock, claim the
controller input clock trough DT.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20190116175435.4990-2-jbrunet@baylibre.com
The fixed clocks in the DTS file have a hyphen, but the clock driver has
the fixed clocks using underbar. Thus the clock driver cannot detect the
other fixed clocks correctly. Change the fixed clock names to a hyphen.
Fixes: 07afb8db73 ("clk: socfpga: stratix10: add clock driver for
Stratix10 platform")
Cc: linux-stable@vger.kernel.org
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The main PLL calculation has a mistake. We should be using the
multiplying the VCO frequency, not the parent clock frequency.
Fixes: 07afb8db73 ("clk: socfpga: stratix10: add clock driver for
Stratix10 platform")
Cc: linux-stable@vger.kernel.org
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
If QCOM_GDSC is disabled, gdsc_register() returns -ENOSYS, which causes
gcc_msm8998_probe() to fail. Select QCOM_GDSC to solve the problem.
gcc-msm8998: probe of 100000.clock-controller failed with error -38
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Fixes: b5f5f525c5 ("clk: qcom: Add MSM8998 Global Clock Control (GCC) driver")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Since board support for the CLPS711X platform was removed,
remove the board support from the clk-clps711x driver.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Datasheet for SAMA5D2x mentions 6 sources for PCKx, the last being AUDIOPLL.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add rpm smd clocks, PMIC and bus clocks which are required on MSM8998
for clients to vote on.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This patch adds a driver for Fixed MMIO clock.
The driver reads a clock frequency value from a single 32-bit memory
mapped register and registers it as a fixed rate clock.
It can be enabled with COMMON_CLK_FIXED_MMIO Kconfig option.
Signed-off-by: Jan Kotas <jank@cadence.com>
[sboyd@kernel.org: Make of_fixed_mmio_clk_setup() static, use clk_hw
based APIs]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The gcc_usb3_phy_pipe_clk is generated by the phy, but is also used by
the phy during init. The clock needs to be enabled during the init
sequence, but may not be fully active until after the init sequence is
complete. This causes a catch-22 if the clock status is checked during
enable. As a result, skip the checks to avoid the troubling situation.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The usb30_master_clk supports a 60Mhz frequency, but that is missing from
the table of supported frequencies. Add it.
Fixes: b5f5f525c5 (clk: qcom: Add MSM8998 Global Clock Control (GCC) driver)
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
A branch clock is basically a clock that can be gated for power savings,
but is also what devices/drivers consume. Configuring a branch clock's
rate needs to be done at the source, so for all branch clocks which have
a defined parent, set CLK_SET_RATE_PARENT so that clk_set_rate() calls on
branch clocks can do what is expected. This is important as most drivers
do not check the resulting clock rate after a successful clk_set_rate()
call, thus the driver may get out of sync with the actual hardware state
and weird issues might crop up. This has been observed with issues
getting SDHCI to reliably support "fast" cards such as SDR104.
Fixes: 4807c71cc6 (arm64: dts: Add msm8998 SoC and MTP board support)
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In case the upstream clock are not set, which can happen in case the
VC5 has no valid upstream clock, the $src variable is used uninited
by regmap_update_bits(). Check for this condition and return -EINVAL
in such case.
Note that in case the VC5 has no valid upstream clock, the VC5 can
not operate correctly. That is a hardware property of the VC5. The
internal oscilator present in some VC5 models is also considered
upstream clock.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Alexey Firago <alexey_firago@mentor.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-renesas-soc@vger.kernel.org
[sboyd@kernel.org: Added comment about probe preventing this from
happening in the first place]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add a missing comma so that the output is valid JSON format again.
Fixes: 9fba738a53 ("clk: add duty cycle support")
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Commit d360b130e2 ("clk: imx: Make the i.MX8MQ CCM clock driver
CLK_IMX8MQ dependant") introduced this duplicate and incorrectly ordered
kconfig include.
Fixes: d360b130e2 ("clk: imx: Make the i.MX8MQ CCM clock driver CLK_IMX8MQ dependant")
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fix memory allocation and use struct_size() in kzalloc(). This also
fixes the allocation size to be correct, and smaller, because before we
were allocating a bunch of sizeof(struct clk_hw_onecell_data) structures
for each struct clk_hw we needed.
Fixes: 3fde0e16d0 ("drivers: clk: Add ZynqMP clock driver")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
[sboyd@kernel.org: Expand commit text]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
If tegra_dfll_unregister() fails then "soc" is an error pointer. We
should just return instead of dereferencing it.
Fixes: 1752c9ee23 ("clk: tegra: dfll: Fix drvdata overwriting issue")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.
This is detected by Coccinelle semantic patch.
@@
expression pdev, res, n, t, e, e1, e2;
@@
res = platform_get_resource(pdev, t, n);
+ if (!res)
+ return -EINVAL;
... when != res == NULL
e = devm_ioremap(e1, res->start, e2);
Fixes: 1e3121bfe5 ("clk: imx: add imx8qxp lpcg driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the GPU clock tree on Meson8, Meson8b and Meson8m2.
The GPU clock tree on Meson8b and Meson8m2 is almost identical to the
one one GXBB:
- there's a glitch-free mux at HHI_MALI_CLK_CNTL[31]
- there are two identical parents for this mux: mali_0 and mali_1, each
with a gate, divider and mux
- the parents of mali_0_sel and mali_1_sel are identical to GXBB except
there's no GP0_PLL on these 32-bit SoCs
Meson8 is different because it does not have the glitch-free mux.
Instead if only has the mali_0 clock tree. The parents of mali_0_sel are
identical to the ones on Meson8b and Meson8m2.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181208171247.22238-4-martin.blumenstingl@googlemail.com
The Meson8 SoC is slightly different compared to Meson8b and Meson8m2
because it does not have the glitch-free Mali GPU clock mux. For Meson8b
and Meson8m2 there are currently no known differences.
Add a separate clk_hw_onecell_data table for Meson8 so these differences
can be implemented. For now meson8_hw_onecell_data is a clone of our
existing meson8b_hw_onecell_data.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181208171247.22238-3-martin.blumenstingl@googlemail.com
Add the clock subtree generating the 32k clock in amlogic axg ao block.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-6-jbrunet@baylibre.com
Replace the cec-32k clock of gxbb-ao with the simpler dual divider
driver. The dual divider implements only the dividing part. All the
other bits are now exposed using simple elements, such as gates and
muxes
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-5-jbrunet@baylibre.com
Add the dual divider driver. This special divider make a weighted
average between 2 dividers to reach fractional divider values.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-4-jbrunet@baylibre.com
Order, ids and size between the table of regmap clocks and the onecell
data table could be different.
Set regmap pointer in all the regmap clocks before starting the
registration using the onecell data, to make sure we don't
get into an incoherent situation.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-3-jbrunet@baylibre.com
This patch fixes settings of GPLL frequency in fractional mode for
rk3328. In this mode, FOUTVCO is calcurated by following formula:
FOUTVCO = FREF * FBDIV / REFDIV + ((FREF * FRAC / REFDIV) >> 24)
The problem is in FREF * FRAC >> 24 term. This result always lacks
one from target value is specified by rate member. For example first
itme of rk3328_pll_frac_rate originally has
- rate : 1016064000
- refdiv: 3
- fbdiv : 127
- frac : 134217
- FREF * FBDIV / REFDIV = 1016000000
- (FREF * FRAC / REFDIV) >> 24 = 63999
Thus calculated rate is 1016063999. It seems wrong.
If frac has 134218 (it is increased 1 from original value), second
term is 64000. All other items have same situation. So this patch
adds 1 to frac member in all items of rk3328_pll_frac_rate.
Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Acked-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Pull input updates from Dmitry Torokhov:
"A tiny pull request this merge window unfortunately, should get more
material in for the next release:
- new driver for Raspberry Pi's touchscreen (firmware interface)
- miscellaneous input driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G
Input: atmel_mxt_ts - don't try to free unallocated kernel memory
Input: drv2667 - fix indentation issues
Input: touchscreen - fix coding style issue
Input: add official Raspberry Pi's touchscreen driver
Input: nomadik-ske-keypad - fix a loop timeout test
Input: rotary-encoder - don't log EPROBE_DEFER to kernel log
Input: olpc_apsp - remove set but not used variable 'np'
Input: olpc_apsp - enable the SP clock
Input: olpc_apsp - check FIFO status on open(), not probe()
Input: olpc_apsp - drop CONFIG_OLPC dependency
clk: mmp2: add SP clock
dt-bindings: marvell,mmp2: Add clock id for the SP clock
Input: ad7879 - drop platform data support
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Fixes: 8f7fc5450b ("clk: mvebu: dove: maintain clock init order")
Fixes: 63b8d92c79 ("clk: add Dove PLL divider support for GPU, VMeta and AXI clocks")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Fixes: 3370726042 ("clk: mvebu: Expand mv98dx3236-core-clock support")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Fixes: 0a11a6ae94 ("clk: mvebu: armada-xp: maintain clock init order")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Fixes: 58d516ae95 ("clk: mvebu: kirkwood: maintain clock init order")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Fixes: 07ad6836fa ("clk: mvebu: armada-370: maintain clock init order")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 1f2c5fd5f0 ("ARM: imx: add VF610 clock support")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 8f6d8094b2 ("ARM: imx: add imx7d clk tree support")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: d551356890 ("ARM: imx: add clock driver for imx6sx")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 2acd1b6f88 ("ARM: i.MX6: implement clocks using common clock framework")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: e062b57177 ("clk: exynos4: register clocks using common clock framework")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 5343325ff3 ("clk: socfpga: add a clock driver for the Arria 10 platform")
Fixes: a30d27ed73 ("clk: socfpga: fix clock driver for 3.15")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 5b385a45e0 ("clk: ti: add support for clkctrl aliases")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 0dfc86b317 ("clk: qoriq: Move chip-specific knowledge into driver")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 26cae166cf ("ARM: highbank: remove custom .init_time hook")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
SCU clock can be used in a similar way by IMX8QXP and IMX8QM SoCs.
Let's make the name of clock ID generic to allow other SoCs to reuse
the common part.
This patch only changes the clock id name and file name, so no
functional change.
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
i.MX7ULP has a Cortex-A7 CPU which can run in RUN mode
or HSRUN mode, it is controlled in SMC1 module. The RUN
mode and HSRUN mode will use different clock source for
ARM, "divcore" for RUN mode and "hsrun_divcore" for HSRUN
mode, so the control bits in SMC1 module can be abstracted
as a HW clock mux, this patch adds HSRUN mode related
clocks in SCG1 module and adds "arm" clock in SMC1 module
to support RUN mode and HSRUN mode switch.
Latest clock tree in RUN mode as below:
firc 0 0 0 48000000 0 0 50000
firc_bus_clk 0 0 0 48000000 0 0 50000
hsrun_scs_sel 0 0 0 48000000 0 0 50000
hsrun_divcore 0 0 0 48000000 0 0 50000
sosc 3 3 3 24000000 0 0 50000
spll_pre_sel 1 1 1 24000000 0 0 50000
spll_pre_div 1 1 2 24000000 0 0 50000
spll 1 1 2 528000000 0 0 50000
spll_pfd0 1 1 1 500210526 0 0 50000
spll_pfd_sel 1 1 0 500210526 0 0 50000
spll_sel 1 1 0 500210526 0 0 50000
scs_sel 1 1 0 500210526 0 0 50000
divcore 1 1 0 500210526 0 0 50000
arm 1 1 0 500210526 0 0 50000
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.
For instances using of_node_cmp, this has the side effect of now using
case sensitive comparisons. This should not matter for any FDT based
system which all of these are.
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> (clk-mstp)
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (ux500)
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add simple suspend/resume handlers to the driver to restore the chip
configuration after resume. It is possible that the chip was configured
with non-default values before suspend-resume cycle and that the chip
is powered down during this cycle, so the configuration could get lost.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Alexey Firago <alexey_firago@mentor.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-renesas-soc@vger.kernel.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk-fixes:
clk: qcom: qcs404: Fix gpll0_out_main parent
clk: zynqmp: Off by one in zynqmp_is_valid_clock()
clk: mmp: Off by one in mmp_clk_add()
clk: mvebu: Off by one bugs in cp110_of_clk_get()
arm64: dts: qcom: sdm845-mtp: Mark protected gcc clocks
clk: zynqmp: handle fixed factor param query error
clk: qcom: gcc: Fix board clock node name
clk: meson: axg: mark fdiv2 and fdiv3 as critical
clk: meson-gxbb: set fclk_div3 as CLK_IS_CRITICAL
clk: fixed-factor: fix of_node_get-put imbalance
gcc_lpass_trig_clk is not used downstream, therefore there is no reason to
expect it to be needed for clients. Let's remove it because messing with
the clock has been observed to cause Linux hangs when the qdss_clk is
initialized by rpmcc.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Fixes: 4807c71cc6 (arm64: dts: Add msm8998 SoC and MTP board support)
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Similar to other qcom targets, gcc_mmss_noc_cfg_ahb_clk should not be
disabled. Any mmss access depends on this clock, and its been observed
that enabling mmssnoc_axi_rpm_clk with rpmcc results in an implicit
access to mmss and will crash the system if gcc_mmss_noc_cfg_ahb_clk is
disabled.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Fixes: 4807c71cc6 (arm64: dts: Add msm8998 SoC and MTP board support)
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk-renesas:
clk: renesas: rcar-gen3: Add HS400 quirk for SD clock
clk: renesas: rcar-gen3: Add documentation for SD clocks
clk: renesas: rcar-gen3: Set state when registering SD clocks
clk: renesas: r8a77995: Simplify PLL3 multiplier/divider
clk: renesas: r8a77995: Add missing CPEX clock
clk: renesas: r8a77995: Remove non-existent SSP clocks
clk: renesas: r8a77995: Remove non-existent VIN5-7 module clocks
clk: renesas: r8a77995: Correct parent clock of DU
clk: renesas: r8a77990: Correct parent clock of DU
clk: renesas: r8a77970: Add CPEX clock
clk: renesas: r8a77965: Add CPEX clock
clk: renesas: r8a7796: Add CPEX clock
clk: renesas: r8a7795: Add CPEX clock
clk: renesas: r8a774a1: Add CPEX clock
dt-bindings: clock: r8a7796: Remove CSIREF clock
dt-bindings: clock: r8a7795: Remove CSIREF clock
clk: renesas: Mark rza2_cpg_clk_register static
clk: renesas: r7s9210: Add USB clocks
clk: renesas: r8a77970: Add RPC clocks
clk: renesas: r7s9210: Add SDHI clocks
* clk-allwinner:
clk: sunxi-ng: a64: Allow parent change for VE clock
clk: sunxi-ng: a33: Set CLK_SET_RATE_PARENT for all audio module clocks
clk: sunxi-ng: a33: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: h3: Allow parent change for ve clock
clk: sunxi-ng: add support for suniv F1C100s SoC
dt-bindings: clock: Add Allwinner suniv F1C100s CCU
clk: sunxi-ng: h3/h5: Fix CSI_MCLK parent
clk: sunxi-ng: r40: Force LOSC parent to RTC LOSC output
clk: sunxi-ng: sun50i: a64: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: a64: Fix gate bit of DSI DPHY
clk: sunxi-ng: Enable DE2_CCU for SUN8I and SUN50I
clk: sunxi-ng: Add support for H6 DE3 clocks
dt-bindings: clock: sun8i-de2: Add H6 DE3 clock description
clk: sunxi-ng: h6: Set video PLLs limits
clk: sunxi-ng: Use u64 for calculation of NM rate
clk: sunxi-ng: Adjust MP clock parent rate when allowed
clk: sunxi-ng: sun50i: h6: Fix MMC clock mux width
clk: sunxi-ng: enable so-said LDOs for A64 SoC's pll-mipi clock
* clk-tegra:
clk: tegra: Return the exact clock rate from clk_round_rate
clk: tegra30: Use Tegra CPU powergate helper function
soc/tegra: pmc: Drop SMP dependency from CPU APIs
clk: tegra: Fix maximum audio sync clock for Tegra124/210
clk: tegra: get rid of duplicate defines
clk: tegra20: Check whether direct PLLM sourcing is turned off for EMC
clk: tegra20: Turn EMC clock gate into divider
* clk-meson: (25 commits)
clk: meson: axg-audio: use the clk input helper function
clk: meson: add clk-input helper function
clk: meson: Mark some things static
clk: meson: meson8b: add the read-only video clock trees
clk: meson: meson8b: add the fractional divider for vid_pll_dco
clk: meson: meson8b: fix the offset of vid_pll_dco's N value
clk: meson: Fix GXL HDMI PLL fractional bits width
clk: meson: meson8b: add the CPU clock post divider clocks
clk: meson: meson8b: rename cpu_div2/cpu_div3 to cpu_in_div2/cpu_in_div3
clk: meson: clk-regmap: add read-only gate ops
clk: meson: meson8b: allow changing the CPU clock tree
clk: meson: meson8b: run from the XTAL when changing the CPU frequency
clk: meson: meson8b: add support for more M/N values in sys_pll
clk: meson: meson8b: mark the CPU clock as CLK_IS_CRITICAL
clk: meson: meson8b: do not use cpu_div3 for cpu_scale_out_sel
clk: meson: clk-pll: check if the clock is already enabled
clk: meson: meson8b: fix the width of the cpu_scale_div clock
clk: meson: meson8b: fix incorrect divider mapping in cpu_scale_table
clk: meson: meson8b: use the HHI syscon if available
dt-bindings: clock: meson8b: use the registers from the HHI syscon
...
* clk-rockchip:
clk: rockchip: add clock-id to gate of ACODEC for rk3328
clk: rockchip: add clock ID of ACODEC for rk3328
clk: rockchip: fix ID of 8ch clock of I2S1 for rk3328
clk: rockchip: fix I2S1 clock gate register for rk3328
clk: rockchip: make rk3188 hclk_vio_bus critical
clk: rockchip: fix rk3188 sclk_mac_lbtest parameter ordering
clk: rockchip: fix rk3188 sclk_smc gate data
clk: rockchip: fix typo in rk3188 spdif_frac parent
The current behavior is that clk_round_rate would return the same clock
rate passed to it for valid PLL configurations. This change will return
the exact rate the PLL will provide in accordance with clk API.
Signed-off-by: Robert Yang <decatf@gmail.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Rather than using the tegra_powergate_is_powered() function for
determining if a CPU is powered, use the tegra_pmc_cpu_is_powered()
instead which was created to get the CPU power status. Internally
tegra_pmc_cpu_is_powered() calls tegra_powergate_is_powered() and so
is equivalent.
The Tegra30 clock driver is the only public user of
tegra_powergate_is_powered() and so by updating the Tegra30 clock
driver to use tegra_pmc_cpu_is_powered(), we can then make
tegra_powergate_is_powered() a non-public function.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The maximum frequency supported for I2S on Tegra124 and Tegra210 is
24.576MHz (as stated in the Tegra TK1 data sheet for Tegra124 and the
Jetson TX1 module data sheet for Tegra210). However, the maximum I2S
frequency is limited to 24MHz because that is the maximum frequency of
the audio sync clock. Increase the maximum audio sync clock frequency
to 24.576MHz for Tegra124 and Tegra210 in order to support 24.576MHz
for I2S.
Update the tegra_clk_register_sync_source() function so that it does
not set the initial rate for the sync clocks and use the clock init
tables to set the initial rate instead.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
- NXP QorIQ T1023 SoC support
- Introduce a 'protected-clocks' binding for firmware protected clks
- Shrink code some with DEFINE_SHOW_ATTRIBUTE()
* clk-qoriq-t1023:
clk: qoriq: add more chips support
* clk-protected-binding:
clk: qcom: Support 'protected-clocks' property
dt-bindings: clk: Introduce 'protected-clocks' property
* clk-define-show-macro:
clk: tegra: Change to use DEFINE_SHOW_ATTRIBUTE macro
clk: nomadik: Change to use DEFINE_SHOW_ATTRIBUTE macro
* clk-static:
clk: stm32mp1: drop pointless static qualifier in stm32_register_hw_clk()
- Mediatek MT7629 SoC clk controllers
* clk-bcm-module-license:
clk: bcm2835: make license text and module license match
* clk-boston-leak:
clk: boston: unregister clks on failure in clk_boston_setup()
clk: boston: fix possible memory leak in clk_boston_setup()
* clk-mtk-mt7629:
clk: mediatek: fix the PCIe MAC clock parent
clk: mediatek: Drop more __init markings for driver probe
clk: mediatek: Drop __init from mtk_clk_register_cpumuxes()
dt-bindings: arm: mediatek: document clk bindings for MT7629
clk: mediatek: add clock support for MT7629 SoC
The Low-Power Clock Gate (LPCG) modules contain a local programming
model to control the clock gates for the peripherals. An LPCG module
is used to locally gate the clocks for the associated peripheral.
And they're bedind the SCU clock.
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add imx8qxp clk driver which is based on SCU firmware clock service.
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Move the makefile rule higher in the file]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Remove the dependency between the i.MX8MQ CCM clock driver
and the CONFIG_SOC_IMX8MQ and use CONFIG_CLK_IMX8MQ instead.
CONFIG_CLK_IMX8MQ depends on ARCH_MXC && ARM64.
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add SCU clock common part which will be used by client clock drivers.
SCU clocks are totally different from the legacy clocks (No much
legacy things can be reused), it's using a firmware interface now based
on SCU protocol. So a new configuration option CONFIG_MXC_CLK_SCU is added.
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Mark ccm_ipc_handle static]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The patch introduces CONFIG_MXC_CLK option for legacy MMIO clocks,
this is required to compile legacy MMIO clock conditionally when adding
SCU based clocks for MX8 platforms later.
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
- Fix GXL HDMI Pll fractional bits (from first round)
- Add the Meson8/Meson8b video clocks
- Add clk-input helper and use it for axg-audio clock driver
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Merge tag 'meson-clk-4.21-2' of https://github.com/BayLibre/clk-meson into clk-meson
Pull more meson clk driver updates from Neil Armstrong:
- Fix GXL HDMI Pll fractional bits (from first round)
- Add the Meson8/Meson8b video clocks
- Add clk-input helper and use it for axg-audio clock driver
* tag 'meson-clk-4.21-2' of https://github.com/BayLibre/clk-meson:
clk: meson: axg-audio: use the clk input helper function
clk: meson: add clk-input helper function
clk: meson: meson8b: add the read-only video clock trees
clk: meson: meson8b: add the fractional divider for vid_pll_dco
clk: meson: meson8b: fix the offset of vid_pll_dco's N value
clk: meson: Fix GXL HDMI PLL fractional bits width
Rework the axg audio clock controller to use the new clk-input helper
function.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: fixed pclk input clock name to axg_audio_pclk]
Link: http://lkml.kernel.org/r/20181204165819.21541-3-jbrunet@baylibre.com
This flag doesn't look to be used by any code, just set in the clk init
structure and then never tested again. Remove it from this driver as it
doesn't provide any benefit. Also remove parenthesis nearby that are not
needed and include clk.h to fix a sparse warning about static function
definition.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in the clk init
structure and then never tested again. Remove it from this drivers as it
doesn't provide any benefit.
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in the clk init
structure and then never tested again. Remove it from this driver as it
doesn't provide any benefit.
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in various clk
init structures and then never tested again. Remove it from these
drivers as it doesn't provide any benefit.
Cc: Jiancheng Xue <xuejiancheng@hisilicon.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Jianguo Sun <sunjianguo1@huawei.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in various clk
init structures and then never tested again. Remove it from these
drivers as it doesn't provide any benefit.
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: <uclinux-h8-devel@lists.sourceforge.jp>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in various clk
init structures and then never tested again. Remove it from these
drivers as it doesn't provide any benefit.
Cc: Anders Berg <anders.berg@lsi.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in various clk
init structures and then never tested again. Remove it from these
drivers as it doesn't provide any benefit.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This flag doesn't look to be used by any code, just set in various clk
init structures and then never tested again. Remove it from these
drivers as it doesn't provide any benefit.
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: <linux-renesas-soc@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
ROHM bd71837 and bd71847 contain 32768Hz clock gate. Support the clock
using generic clock framework. Note, only bd71837 is tested but bd71847
should be identical what comes to clk parts.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We duplicate the 'depends on' in almost every Kconfig here, and it's
getting out of hand now that we have tens of options for various SoC
drivers here. Let's clean it up a little by making a menuconfig for a
submenu and adding an if wrapper around the driver section.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The ENET PLL is different from the other i.MX6 PLLs, as it has
multiple outputs with different post-dividers, which are all
bypassed if the single bypass bit is activated. The hardware setup
looks something like this:
_
refclk-o---PLL---o----DIV1-----| \
| | |M |----OUT1
o-----------------------|_/
| | _
| o----DIV2-----| \
| | |M |----OUT2
o-----------------------|_/
| | _
| `----DIV3-----| \
| |M |----OUT3
`-----------------------|_/
The bypass bit not only bypasses the PLL, but also the attached
post-dividers. This would be reasonbly straight forward to model
with a single output, or with different bypass bits for each output,
but sadly the HW guys decided that it would be good to actuate all
3 muxes with a single bit.
So the need to have the PLL bypassed for one of the outputs always
affects 2 other (in our model) independent branches of the clock
tree.
This means the decision to bypass this PLL is a system wide design
choice and should not be changed on-the-fly, so we can treat any
bapass configuration as static. As such we can just register the
post-dividiers with a ratio that reflects the bypass status, which
allows us to bypass the PLL without breaking our abstraction model
and with it DT stability.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
When specifying external clock inputs to the CCM the current code
requires the clocks to be in a "clocks" child node of the DT root.
This is not really conformant with DT best practices.
To avoid the need to deviate from those best practices, allow the
clock inputs to be specified via standard clock handles. This is
in line with how drivers of the later CCM driver revisions on
newer i.MX SoCs handle this.
As we can't retroactively change the DT binding, allow this as an
option with a fallback to the old way of how this has been handled.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The exclusive gates may be set up in the wrong way by software running
before the clock driver comes up. In that case the exclusive setup is
locked in its initial state, as the complementary function can't be
activated without disabling the initial setup first.
To avoid this lock situation, reset the exclusive gates to the off
state and allow the kernel to provide the proper setup.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Dong Aisheng <Aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
On i.MX6QP/i.MX6Q/i.MX6DL, there are DCIC1/DCIC2 clocks
gate in CCM_CCGR0 register, add them into clock tree for
clock management.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Same as other i.MX6 SoCs, ensure unused MMDC channel's
handshake is bypassed, this is to make sure no request
signal will be generated when periphe_clk_sel is changed
or SRC warm reset is triggered.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Cedrus driver wants to set VE clock higher than it's possible without
changing parent rate.
Allow changing parent rate for VE clock, so clock rate can be set
freely.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The initialization of ret is redundant as it is being re-assigned to
the return value from the call to imx8m_clk_composite_compute_dividers.
Clean this up by removing the initialization.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
On H3 (ES1.x, ES2.0) and M3-W (ES1.0, ES1.1) the clock setting for HS400
needs a quirk to function properly. The reason for the quirk is that
there are two settings which produces same divider value for the SDn
clock. On the effected boards the one currently selected results in
HS400 not working.
This change uses the same method as the Gen2 CPG driver and simply
ignores the first clock setting as this is the offending one when
selecting the settings. Which of the two possible settings is used have
no effect for SDR104.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Document the known use cases of the different clock settings. This is
useful as different SoC and ES versions use different settings to do
the same thing as there is more than one combination to achieve the
same SDn clock speed.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The driver tries to figure out which state a SD clock is in when the
clock is registered, instead of setting a known state. This can be
problematic for two reasons.
1. If the clock driver can't figure out the state of the clock,
registration of the clock fails, and setting of a known state by a
clock user is not possible.
2. The state of the clock depends on if and how the bootloader
configured it. The driver only checks that the rate is known, not if
the clock is stopped or not for example.
Fix this by setting a known state and making sure the clock is stopped.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Add clkref clocks for usb3, hdmi, ufs, pcie, and usb2. They are all
sourced off CXO_IN, so parent them off "xo" until a proper link to the
rpmcc can be described in DT.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Drop the halt check of the UFS symbol clocks, in accordance with other
platforms. This makes clk_disable_unused() happy and makes it possible
to turn the clocks on again without an error.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Disabling gcc_hmss_dvm_bus_clk and gcc_lpass_at_clk causes the board to
lock up, and by that preventing the kernel to boot without
clk_ignore_unused.
gcc_hmss_dvm_bus_clk is marked always-on downstream, but not referenced,
and gcc_lpass_at_clk isn't mentioned. So let's remove them until they
are needed by some client.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The current list of defined resets is incomplete compared to what the
hardware implements. Enumerate the remaining resets according to the
hardware documentation.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We have this dummy factor clk in place to workaround a missing rpm clk
driver that can manage the XO clk state. Add it in to match what we do
on msm8996.
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The PCIe function doesn't work as the clock tree of MAC layer is wrong.
Hence fix the clock table.
Fixes: 3b5e748615 ("clk: mediatek: add clock support for MT7629 SoC")
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
use devm variant for of_provider registration.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
[sboyd@kernel.org: Drop unused parent pointer]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
use devm variant for of_provider registration so provider is freed
at exit.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Simplify clean-up for rk808 by using managed version of of_provider
registration.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
use devm variant for of_provider registration so provider is freed
at exit.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
It seems to be usual for MFD devices that the created 'clock sub-device'
do not have own DT node. The clock provider information is usually in the
main device node which is owned by the MFD device. Change the devm variant
of clk of-provider registration to check the parent device node if given
device has no own node or if the node does not contain the #clock-cells
property. In such case use the parent node if it contains the #clock-cells.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
[sboyd@kernel.org: Add some comment in the code and pull out logic into
a single function to return the provider device_node pointer]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
All the audio interfaces on Allwinner SoCs need to change their module
clocks during operation, to switch between support for 44.1 kHz and 48
kHz family sample rates. The clock rate for the module clocks is
governed by their upstream audio PLL. The module clocks themselves only
have a gate, and sometimes a divider or mux. Thus any rate changes need
to be propagated upstream.
Set the CLK_SET_RATE_PARENT flag for all audio module clocks to achieve
this.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. As the PLL hardware is
identical in most chips, we can back port the settings from the newer
SoC, in this case the H3, onto the A33.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Add the clock input helper function. Several amlogic clock controllers
will now be registering bypass clock input. Instead of copying this
code in every of them, let's make an helper function for it
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
[narmstrong: fixed up to apply on Makefile and clkc.h]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181204165819.21541-2-jbrunet@baylibre.com
Document the devm_of_clk_del_provider and the
devm_of_clk_add_hw_provider functions.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
[sboyd@kernel.org: Comply with kernel-doc formatting]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Feb 28, 2018) added
the CPEX clock on R-Car D3. This clock can be selected as a clock
source for CMT1 (Compare Match Timer Type 1).
Add the missing clock to the DT bindings header, and implement support
for it in the clock driver.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
The R-Car Gen3 HardWare Manual Errata for Rev. 0.80 (Dec 22, 2017, and
Feb 28, 2018) removed the SSPSRC, SSP1, and SSP2 clocks on R-Car D3, as
this SoC does not have a Stream and Security Processor.
As these definitions were never used, they can just be removed.
The freed slots in the DT bindings header must not be reused, though.
Fixes: 714c53aa2e ("clk: renesas: Add r8a77995 CPG Core Clock Definitions")
Fixes: d71e851d82 ("clk: renesas: cpg-mssr: Add R8A77995 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
R-Car Gen3 Hardware Manual Errata for Rev 0.80 of February 28, 2018,
removed the module clocks for the Video Input Module (VIN) channels 5-7
on R-Car D3, as they do not exist on this SoC.
Fixes: d71e851d82 ("clk: renesas: cpg-mssr: Add R8A77995 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
According to the R-Car Gen3 Hardware Manual Rev 1.00, the parent clock
of the DU module clocks on R-Car D3 is S1D1.
Fixes: d71e851d82 ("clk: renesas: cpg-mssr: Add R8A77995 support")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
According to the R-Car Gen3 Hardware Manual Rev 1.00, the parent clock
of the DU module clocks on R-Car E3 is S1D1.
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Fixes: 3570a2af47 ("clk: renesas: cpg-mssr: Add support for R-Car E3")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Implement support for the CPEX clock on R-Car V3M. This clock can be
selected as a clock source for CMT1 (Compare Match Timer Type 1).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Implement support for the CPEX clock on R-Car M3-N. This clock can be
selected as a clock source for CMT1 (Compare Match Timer Type 1).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Implement support for the CPEX clock on R-Car M3-W. This clock can be
selected as a clock source for CMT1 (Compare Match Timer Type 1).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Implement support for the CPEX clock on R-Car H3. This clock can be
selected as a clock source for CMT1 (Compare Match Timer Type 1).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Implement support for the CPEX clock on RZ/G2M. This clock can be
selected as a clock source for CMT1 (Compare Match Timer Type 1).
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Cedrus driver wants to set VE clock higher than it's possible without
changing parent rate.
In order to correct that, allow changing parent rate for VE clock.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
The suniv F1C100s SoC (the chip in some new F-series products of
Allwinner)
has a CCU which seems to be a stripped version of the CCU in SoCs after
sun6i.
Add support for the CCU.
Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
These are missing 'static' so sparse complains:
drivers/clk/meson/vid-pll-div.c:58:26: warning: symbol '_get_table_val' was not declared. Should it be static?
drivers/clk/meson/gxbb.c:1585:12: warning: symbol 'gxbb_vid_pll_parent_names' was not declared. Should it be static?
drivers/clk/meson/gxbb.c:1620:12: warning: symbol 'gxbb_vclk_parent_names' was not declared. Should it be static?
drivers/clk/meson/gxbb.c:1980:12: warning: symbol 'gxbb_cts_parent_names' was not declared. Should it be static?
drivers/clk/meson/gxbb.c:2036:12: warning: symbol 'gxbb_cts_hdmi_tx_parent_names' was not declared. Should it be static?
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
i.MX7ULP Clock functions are under joint control of the System
Clock Generation (SCG) modules, Peripheral Clock Control (PCC)
modules, and Core Mode Controller (CMC)1 blocks
The clocking scheme provides clear separation between M4 domain
and A7 domain. Except for a few clock sources shared between two
domains, such as the System Oscillator clock, the Slow IRC (SIRC),
and and the Fast IRC clock (FIRCLK), clock sources and clock
management are separated and contained within each domain.
M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules.
A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules.
This driver only adds clock support in A7 domain.
Note that most clocks required to be operated when gated, e.g. pll,
pfd, pcc. And more special cases that scs/ddr/nic mux selecting
different clock source requires that clock to be enabled first,
then we need set CLK_OPS_PARENT_ENABLE flag for them properly.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Anson Huang <Anson.Huang@nxp.com>
Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Clock providers are recommended to use the new struct clk_hw based API,
so implement IMX clk_hw based provider helpers functions to the new
approach.
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
As the commit 2893c37946 ("clk: make strings in parent name arrays
const"), let's make the parent strings const, otherwise we may meet
the following warning when compiling:
drivers/clk/imx/clk-imx7ulp.c: In function 'imx7ulp_clocks_init':
drivers/clk/imx/clk-imx7ulp.c:73:35: warning: passing argument 5 of
'imx_clk_mux_flags' discards 'const' qualifier from pointer target type
clks[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_mux_flags("apll_pre_sel", base + 0x508, 0,
1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE);
^
In file included from drivers/clk/imx/clk-imx7ulp.c:23:0:
drivers/clk/imx/clk.h:200:27: note: expected 'const char **' but argument is
of type 'const char * const*'
...
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The imx composite clk is designed for Peripheral Clock Control (PCC)
module observed in IMX ULP SoC series.
NOTE pcc can only be operated when clk is gated.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Anson Huang <Anson.Huang@nxp.com>
Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Include clk.h for sparse warnings]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The pfdv2 is designed for PLL Fractional Divide (PFD) observed in System
Clock Generation (SCG) module in IMX ULP SoC series. e.g. i.MX7ULP.
NOTE pfdv2 can only be operated when clk is gated.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Anson Huang <Anson.Huang@nxp.com>
Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Include clk.h for sparse warnings]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
pllv4 is designed for System Clock Generation (SCG) module observed
in IMX ULP SoC series. e.g. i.MX7ULP.
The SCG modules generates clock used to derive processor, system,
peripheral bus and external memory interface clocks while this patch
intends to support the PLL part.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Anson Huang <Anson.Huang@nxp.com>
Cc: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Include clk.h for sparse warnings]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Adding CLK_FRAC_DIVIDER_ZERO_BASED flag to indicate the numerator and
denominator value in register are start from 0.
This can be used to support frac dividers like below:
Divider output clock = Divider input clock x [(frac +1) / (div +1)]
where frac/div in register is:
000b - Divide by 1.
001b - Divide by 2.
010b - Divide by 3.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stephen Boyd