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Same functionality, just easier to read.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The OSTM timer driver for RZ/A2 uses TIMER_OF_DECLARE which requires the
ostm module clocks to be registers early in boot.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add support for SoCs that need to register core and module clocks early in
order to use OF drivers that exclusively use macros such as
TIMER_OF_DECLARE.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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For now the reset controller was using raw register access because the
early init did not initialize the regmap. However, now that clocks are
initialized early we can simply use the regmap also for the reset
controller.
No functional changes.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Until now only the reset controller (part of the clock controller
register space) was registered early in the boot process, while the
clock controller itself was registered later on.
However, some parts of the SoC are initialized early in the boot process,
such as the SRAM and the TWD timer. The bootloader already enables these
clocks so we didn't see any issues so far.
Register the clock controller early so other drivers (such as the SRAM
and TWD timer) can use the clocks early in the boot process.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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We found the PCIe driver doesn't really work with
the mpll3 clock which is actually reserved for debug,
So drop it from the mux list.
Fixes: 33b89db68236 ("clk: meson-axg: add clocks required by pcie driver")
Tested-by: Jianxin Qin <jianxin.qin@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Some of the master clocks provided by the axg audio clock controller are
system clock (spdifin and pdm sysclk). They are used to clock an internal
DSP of the related devices. Having them constantly rounded down instead
of closest is preferable.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Putting hard-coded rates inside the parameter tables assumes that
the parent is known and will never change. That's a big assumption
we should not make.
We have everything we need to recalculate the output rate using
the parent rate and the rest of the parameters. Let's do so and
drop the rates from the tables.
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Remove od parameters from pll clocks and add post dividers clocks
instead. Some clock, especially the one which feature several ods,
may provide output between those ods. Also, some drivers, such
as the hdmi driver, may require a more detailed control of the
clock dividers, compared to what CCF would perform automatically.
One added benefit of removing ods is that it also greatly reduce the
size of the rate parameter tables.
In the future, we could possibly take the predivider 'n' out of this
driver as well. To do so, we will need to understand the constraints
for the PLL to lock and whether or not it depends on the input clock
rate.
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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CLK_GET_RATE_NOCACHE should only be necessary when the registers
controlling the rate of clock may change outside of CCF. On Amlogic,
it should only be the case for the hdmi pll which is directly controlled
by the display driver (WIP to fix this).
The other plls should not require this flag.
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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Add the enable the bit of the pll clocks.
These pll clocks may be disabled but we can't model this as an external
gate since the pll needs to lock when enabled.
Adding this bit allows to drop the poke of the first register of PLL.
This will be useful to model the different components of the pll using
generic clocks elements
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
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The TPU0 clock wasn't present in the original R8A77970 patch by Daisuke
Matsushita, it was added in a later BSP version...
Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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PLL0 runs at 4.8 GHz, i.e. EXTAL x 100.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
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This patch documents RZ/G2E (a.k.a. R8A774C0) bindings for the
Clock Pulse Generator driver.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add RZ/G2E (R8A774C0) Clock Pulse Generator / Module Standby and
Software Reset support.
Based on Table 8.2g of "RZ/G Series, 2nd Generation User's Manual:
Hardware (Rev. 0.61, June 12, 2018)".
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add all RZ/G2E (a.k.a. R8A774C0) Clock Pulse Generator Core
Clock Outputs, as listed in Table 8.2g ("List of Clocks
[RZ/G2E]") of the RZ/G2 Hardware User's Manual.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add RZ/G1N (R8A7744) Clock Pulse Generator / Module Standby and Software
Reset support.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add all RZ/G1N Clock Pulse Generator Core Clock Outputs, as listed in
Table 7.2b ("List of Clocks [RZ/G1M/N]") of the RZ/G1 Hardware User's
Manual.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add binding documentation for the RZ/G1N (R8A7744) Clock Pulse
Generator driver.
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text on Renesas related headers.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add support for the R7S9210 (RZ/A2) Clock Pulse Generator and Module
Standby.
The Module Standby HW in the RZ/A series is very close to R-Car HW, except
for how the registers are laid out.
The MSTP registers are only 8-bits wide, there are no status registers
(MSTPSR), and the register offsets are a little different. Since the RZ/A
hardware manuals refer to these registers as the Standby Control Registers,
we'll use that name to distinguish the RZ/A type from the R-Car type.
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Rob Herring <robh@kernel.org> # DT bits
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The TMU clocks weren't present in the original R8A77970 patch by Daisuke
Matsushita, they were added in a later BSP version...
Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add the R8A77970 CMT module clocks.
Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Chris Paterson <chris.paterson2@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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The clock for UARTs 0 through 2 is UART012, the clock for UARTs 3 through
7 is UART34567.
For UART012, we stop the clock driver from changing the clock rate. This
is because the Synopsys UART driver simply sets the reference clock to 16x
the baud rate, but doesn't check if the actual rate is within the required
tolerance. The RZ/N1 clock divider can't provide this (we have to rely on
the UART's internal divider to set the correct clock rate), so you end up
with a clock rate that is way off what you wanted.
In addition, since the clock is shared between multiple UARTs, you don't
want the driver trying to change the clock rate as it may affect the other
UARTs (which may not have been configured yet, so you don't know what baud
rate they will use). Normally, the clock rate is set early on before Linux
to some very high rate that supports all of the clock rates you want.
This change stops the UART34567 clock rate from changing for the same
reasons.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Fixes: 4c3d88526eba2143 ("clk: renesas: Renesas R9A06G032 clock driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Replace common suspend/resume handling code by generic helper.
Almost no functional change, the only difference is in handling
of hypothetical memory allocation failure on boot.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
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Replace common suspend/resume handling code by generic helper.
Almost no functional change, the only difference is in handling
of hypothetical memory allocation failure on boot.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
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Replace common suspend/resume handling code by generic helper.
Almost no functional change, the only difference is in handling
of hypothetical memory allocation failure on boot.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
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Exynos Audio SubSystem and Exynos3250 clock drivers don't use any syscore
function, so don't include linux/syscore_ops.h in their code.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <snawrocki@kernel.org>
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Allwinner A64 HDMI PHY clock has PLL_VIDEO0 as a parent.
Include the macro on dt-bindings so-that the same can be used
while defining CCU clock phandles.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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Video PLLs on A64 can be set to higher rate that it is actually
supported by HW.
Limit maximum rate to 1008 MHz. This is the maximum allowed rate by BSP
clock driver. Interestengly, user manual specifies maximum frequency to
be 600 MHz. Historically, this data was wrong in some user manuals for
other SoCs, so more faith is put in BSP clock driver.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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According to documentation and experience with other similar SoCs, video
PLLs don't work stable if their output frequency is set below 192 MHz.
Because of that, set minimal rate to both A64 video PLLs to 192 MHz.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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On the H6, the MMC module clocks are fixed in the new timing mode,
i.e. they do not have a bit to select the mode. These clocks have
a 2x divider somewhere between the clock and the MMC module.
To be consistent with other SoCs supporting the new timing mode,
we model the 2x divider as a fixed post-divider on the MMC module
clocks.
This patch adds the post-dividers to the MMC clocks, following the
approach on A64.
Fixes: 524353ea480b ("clk: sunxi-ng: add support for the Allwinner H6 CCU")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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On R-Car V3M (AKA R8A77970), the SD0CKCR is laid out differently than on
the other R-Car gen3 SoCs. In fact, the layout is the same as on R-Car gen2
SoCs, so we'll need to copy the divisor tables from the R-Car gen2 driver.
We'll also need to support the SoC specific clock types, thus we're adding
CLK_TYPE_GEN3_SOC_BASE at the end of 'enum rcar_gen3_clk_types', declare
SD0H/SDH clocks in 'enum r8a77970_clk_types', and handle those clocks in
the overridden cpg_clk_register() method; then, finally, add the SD-IF
module clock (derived from the SD0 clock).
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Now that RCLK has been added by Geert, we can add the CMT module clocks.
Based on the original (and large) patch by Vladimir Barinov.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Add suspend/resume hooks in Armada 37xx peripheral clocks driver to
handle S2RAM operations.
One can think that these hooks are useless by comparing the register
values before and after a suspend/resume cycle: they will look the same
anyway. This is because of some scripts executed by the Cortex-M3 core
during ATF operations to init both the clocks and the DDR. These values
could be modified by the BL33 stage or by Linux itself and should be
preserved.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Prepare the introduction of suspend/resume hooks by having an easy way
to access all the registers in one go just from a device: add the IP
base address in the driver data.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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There is a potential execution path in which function
platform_get_resource() returns NULL. If this happens,
we will end up having a NULL pointer dereference.
Fix this by replacing devm_ioremap with devm_ioremap_resource,
which has the NULL check and the memory region request.
This code was detected with the help of Coccinelle.
Cc: stable@vger.kernel.org
Fixes: 97b7129cd2af ("reset: hisilicon: change the definition of hisi_reset_init")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-renesas
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Improve OSC and RCLK (watchdog) handling on R-Car Gen3 SoCs,
- Add support for SATA and Fine Display Processor (FDP) clocks on
R-Car M3-N,
- Add support for the new RZ/G2M (r8a774a1) SoC,
- Small fixes and clean ups.
* tag 'clk-renesas-for-v4.20-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: r8a77990: Add missing I2C7 clock
clk: renesas: r8a77965: Add FDP clock
clk: renesas: cpg-mssr: Add r8a774a1 support
clk: renesas: Add r8a774a1 CPG Core Clock Definitions
clk: renesas: r8a77965: Add SATA clock
clk: renesas: r8a77980: Add RCLK for watchdog timer
clk: renesas: rcar-gen3: Add support for mode pin clock selection
clk: renesas: r8a77995: Correct RCLK handling
clk: renesas: r8a77990: Correct RCLK handling
clk: renesas: rcar-gen3: Add support for RCKSEL clock selection
clk: renesas: cpg-mssr: Add support for fixed rate clocks
clk: renesas: r8a77980: Add OSC predivider configuration and clock
clk: renesas: r8a77965: Add OSC EXTAL predivider configuration
clk: renesas: r8a7796: Add OSC EXTAL predivider configuration
clk: renesas: r8a7795: Add OSC EXTAL predivider configuration
clk: renesas: rcar-gen3: Add support for OSC EXTAL predivider
clk: renesas: rcar-gen3: Rename rint to .r
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When trying to use I2C7 on R-Car E3:
renesas-cpg-mssr e6150000.clock-controller: Cannot get module clock 1003: -2
i2c-rcar e6690000.i2c: failed to add to PM domain always-on: -2
i2c-rcar: probe of e6690000.i2c failed with error -2
Unlike other R-Car Gen3 SoCs, R-Car E3 has more than 7 I2C bus
interfaces. Add the forgotten module clock for the 8th instance to fix
this.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
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Array audio_parents is declared but never used, hence it is redundant
and can be removed.
Cleans up clang warning:
warning: 'audio_parents' defined but not used [-Wunused-const-variable=]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add support for the camera clock controller found on SDM845
based devices. This would allow camera drivers to probe and
control their clocks.
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add device tree bindings for camera clock controller for
Qualcomm Technology Inc's SDM845 SoCs.
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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of_get_child_by_name() returns device node with refcount incremented,
but there is no decrement in cdce925_probe(). The patch adds one.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Return statements in functions returning bool should use true or false
instead of an integer value.
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The table allocated in clk_rcg2_dfs_populate_freq_table() is
eventually iterated over by qcom_find_freq() which assumes that the
table is NULL terminated. Allocate one extra space in the array for
the NULL termination. Initting of the NULL termination is implicit
due to kcalloc().
Fixes: cc4f6944d0e3 ("clk: qcom: Add support for RCG to register for DFS")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Fix child-node lookup which by using the wrong OF helper was searching
the whole tree depth-first, something which could end up matching an
unrelated node.
Also fix the related node-reference leaks.
Fixes: 5b385a45e001 ("clk: ti: add support for clkctrl aliases")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add both the interface and core clock.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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These clocks will need to be defined in the clock driver and
referenced in device tree files.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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