5779 Commits

Author SHA1 Message Date
Michał Mirosław
bb631af3d5 clk: at91: optimize clk_round_rate() for AUDIO_PLL
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>
2019-02-22 09:54:17 -08:00
Andy Shevchenko
a9443a6328 clk: x86: Move clk-lpss.h to platform_data/x86
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>
2019-02-22 00:14:31 -08:00
Katsuhiro Suzuki
d13501a2be clk: fractional-divider: check parent rate only if flag is set
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>
2019-02-22 00:11:47 -08:00
Jeffrey Hugo
760be6586f clk: qcom: Make common clk_hw registrations
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>
2019-02-22 00:06:57 -08:00
Manivannan Sadhasivam
ed6b4795ec clk: actions: Add clock driver for S500 SoC
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>
2019-02-22 00:01:08 -08:00
Manivannan Sadhasivam
9831289f6f clk: actions: Add configurable PLL delay
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>
2019-02-21 23:58:12 -08:00
Stephen Boyd
341fdf2602 clk: imx: imx8mm: Mark init function __init
It calls another __init marked function and thus causes a section
mismatch if we don't mark it this way.

Fixes: ba5625c3e272 ("clk: imx: Add clock driver support for imx8mm")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 15:29:10 -08:00
Taniya Das
9d575719ca clk: qcom: gcc-qcs404: Add cfg_offset for blsp1_uart3 clock
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>
2019-02-21 14:18:13 -08:00
Taniya Das
96dc791d0b clk: qcom: clk-rcg2: Introduce a cfg offset for RCGs
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>
2019-02-21 14:18:12 -08:00
Vinod Koul
fe6b580ec6 clk: qcom: remove empty lines in clk-rcg.h
Remove the redundant empty lines crept in.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 14:18:11 -08:00
Gabriel Fernandez
97621d22df clk: stm32mp1: fix bit width of hse_rtc divider
Fix the bit width of the hse rtc divider because it's off by one.

Fixes: 2c87c9d33117 ("clk: stm32mp1: add RTC clock")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 14:13:22 -08:00
Gabriel Fernandez
f9b76fd24d clk: stm32mp1: remove unnecessary CLK_DIVIDER_ALLOW_ZERO flag
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>
2019-02-21 14:13:21 -08:00
Gabriel Fernandez
d3f2e33c87 clk: stm32mp1: fix HSI divider flag
The divider of HSI (clk-hsi-div) is power of two divider.

Fixes: 9bee94e7b7da ("clk: stm32mp1: Introduce STM32MP1 clock driver")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 14:13:21 -08:00
Gabriel Fernandez
140fc4e406 clk: stm32mp1: fix mcu divider table
index 8: ck_mcu is divided by 256 (not 512)

Fixes: e51d297e9a92 ("clk: stm32mp1: add Sub System clocks")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 14:13:20 -08:00
Gabriel Fernandez
c488b24f86 clk: stm32mp1: set ck_csi as critical clock
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>
2019-02-21 14:13:19 -08:00
Gabriel Fernandez
72cfd1ad10 clk: stm32mp1: add CLK_SET_RATE_NO_REPARENT to Kernel clocks
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>
2019-02-21 14:13:18 -08:00
Gabriel Fernandez
749c9e553e clk: stm32mp1: parent clocks update
Fixes parent clock for axi, fdcan, sai and adc12 clocks.

Fixes: e51d297e9a92 ("clk: stm32mp1: add Sub System clocks")
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 14:13:06 -08:00
Tony Lindgren
5ae51d67ae clk: clk-twl6040: Fix imprecise external abort for pdmclk
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>
2019-02-21 14:11:23 -08:00
Thomas Petazzoni
c0189feead clk: clk-gpio: add support for sleeping GPIOs in gpio-gate-clk
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>
2019-02-21 14:05:25 -08:00
David Dai
04053f4d23 clk: qcom: clk-rpmh: Add IPA clock support
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>
2019-02-21 13:57:55 -08:00
Lubomir Rintel
0ea8cbc15d clk: mmp2: separate LCDC peripheral clk form the display clock
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>
2019-02-21 13:52:02 -08:00
Kunihiko Hayashi
521282237b clk: uniphier: Fix update register for CPU-gear
Need to set the update bit in UNIPHIER_CLK_CPUGEAR_UPD to update
the CPU-gear value.

Fixes: d08f1f0d596c ("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>
2019-02-21 13:50:23 -08:00
Gustavo A. R. Silva
0612fe604d clk: samsung: s3c2443: Mark expected switch fall-through
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>
2019-02-21 13:43:49 -08:00
Krzysztof Kozlowski
785c9f411e clk: samsung: exynos5: Fix kfree() of const memory on setting driver_override
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: b06a532bf1fa ("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>
2019-02-21 13:33:00 -08:00
Krzysztof Kozlowski
5f0b6216ea clk: samsung: exynos5: Fix possible NULL pointer exception on platform_device_alloc() failure
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: b06a532bf1fa ("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>
2019-02-21 13:32:50 -08:00
Fabrizio Castro
e61b30bb34 clk: renesas: r8a774c0: Fix LAST_DT_CORE_CLK
Enum LAST_DT_CORE_CLK needs updating as R8A774C0_CLK_CANFD
was recently added and it's the core clock with the highest
index.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Fixes: 2a6efbc6da5d248c ("clk: renesas: r8a774c0: Add missing CANFD clock")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 13:09:52 -08:00
Abel Vesa
db27e40b27 clk: imx8mq: Add the missing ARM clock
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>
2019-02-21 12:56:52 -08:00
Abel Vesa
ad18bbf369 clk: imx: imx8mq: Fix the rate propagation for arm pll
The arm pll bypass needs to propagate the rate upwards
in order for the cpufreq to work.

Fixes: b80522040cd3f ("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>
2019-02-21 12:56:52 -08:00
Fabio Estevam
202ce5afe5 clk: imx8mq: Add support for the CLKO1 clock
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>
2019-02-21 12:56:52 -08:00
Fabio Estevam
0bfed63baf clk: imx8mq: Fix the CLKO2 source select list
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: b80522040cd3f ("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>
2019-02-21 12:41:17 -08:00
Carlo Caione
81bf81e7d3 clk: imx8mq: Add missing M4 clocks
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>
2019-02-21 12:41:16 -08:00
Bai Ping
ba5625c3e2 clk: imx: Add clock driver support for imx8mm
Add clock driver support for i.MX8MM SOC.

Signed-off-by: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 12:41:16 -08:00
Bai Ping
8646d4dcc7 clk: imx: Add PLLs driver for imx8mm soc
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>
2019-02-21 12:41:16 -08:00
Michael Grzeschik
9b15cffbf2 clk: imx5: add imx5_SCC2_IPG_GATE
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>
2019-02-21 12:41:16 -08:00
Aisheng Dong
666aed2d13 clk: imx: scu: add set parent support
Add clk scu set parents support.

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>
[sboyd@kernel.org: Remove le32_to_cpu() on get_parent op]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-02-21 12:41:16 -08:00
Aisheng Dong
cd67d32727 clk: imx: scu: add fallback compatible string support
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>
2019-02-21 12:41:16 -08:00
Abel Vesa
402564aee0 clk: imx8mq: Make parent names arrays const pointers
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>
2019-02-21 12:41:16 -08:00
Abel Vesa
470663e078 clk: imx: Make parents const pointer in mux wrappers
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>
2019-02-21 12:41:16 -08:00
Abel Vesa
65a6b7c5f3 clk: imx: Make parent_names const pointer in composite-8m
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>
2019-02-21 12:41:16 -08:00
Alexandre Belloni
65a91e2e59 clk: at91: fix masterck name
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: 1eabdc2f9dd8 ("clk: at91: add at91sam9x5 PMCs driver")
Fixes: a2038077de9a ("clk: at91: add sama5d2 PMC driver")
Fixes: 084b696bb509 ("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>
2019-02-20 11:40:21 -08:00
Alexandre Belloni
1b328a2e09 clk: at91: fix at91sam9x5 peripheral clock number
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: 1eabdc2f9dd8 ("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>
2019-02-20 11:34:24 -08:00
Wei Yongjun
bb8727096c clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static
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: 2b2dbc2f94e5 ("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>
2019-02-18 11:16:22 +01:00
Arnd Bergmann
7e5c4c26c7 clk: tegra: Changes for v5.1-rc1
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>
2019-02-15 17:31:41 +01:00
Andreas Kemnade
fddf4e29a6 clk: ti: check clock type before doing autoidle ops
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>
2019-02-15 16:47:55 +02:00
Andreas Kemnade
d277ce2d3a clk: ti: add a usecount for autoidle
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>
2019-02-15 16:47:55 +02:00
Tero Kristo
ead478250b clk: ti: generalize the init sequence of clk_hw_omap clocks
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>
2019-02-15 16:46:22 +02:00
Tero Kristo
8aa09cf322 clk: ti: remove usage of CLK_IS_BASIC
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>
2019-02-15 16:46:22 +02:00
Tero Kristo
7fd79ee78a clk: ti: add new API for checking if a provided clock is an OMAP clock
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>
2019-02-15 16:46:21 +02:00
Tero Kristo
77b773aea5 clk: ti: move clk_hw_omap list handling under generic part of the driver
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>
2019-02-15 16:46:21 +02:00
Stephen Boyd
05c3ae7aa1 Allwinner clock fixes for 5.0
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
2019-02-13 09:01:21 -08:00