For consistency with arm64, where vendors have a single Kconfig symbol
in arch/arm64/Kconfig.platforms.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Unlike all other family-specific Kconfig symbols for Renesas ARM SoCs,
ARCH_RZN1 is user-visible.  As this symbol is already selected by the
SoC-specific ARCH_R9A06G032 symbol, there is no need for that.

Hide ARCH_RZN1 from the user, and move it up, where all other
family-specific Kconfig symbols live.  Drop the select of CPU_V7, as
this is already implied by the dependency of ARCH_RENESAS on
ARCH_MULTI_V7.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Currently support for the ARM Timer and Watchdog Unit is included
unconditionally, while only some Renesas multicore Cortex-A9 SoCs have
a TWD.

This decreases kernel image size by ca. 2 KiB on SoCs without a TWD.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Currently support for the ARM Cortex-A9 Snoop Control Unit is included
unconditionally, while only Renesas multicore Cortex-A9 SoCs have this
kind of SCU.

This decreases kernel image size by ca. 300 bytes on SoCs without such
an SCU.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add minimal support for the RZ/G1N (R8A7744) SoC.
Signed-off-by: NBiju Das <biju.das@bp.renesas.com>
Reviewed-by: NFabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

All drivers for Renesas ARM SoCs have gained proper ARCH_RENESAS
platform dependencies.  Hence finish the conversion from ARCH_SHMOBILE
to ARCH_RENESAS for Renesas 32-bit ARM SoCs, as started by commit
9b5ba0df ("ARM: shmobile: Introduce ARCH_RENESAS").
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add the RZ/A2 SoC to the Renesas SoC collection.
Signed-off-by: NChris Brandt <chris.brandt@renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

R-Mobile APE6, R-Car Gen2, and RZ/G1 SoCs have Cortex-A7 and/or
Cortex-A15 CPU cores, all of which have ARM architectured timers.

Force use of the ARM architectured timer on these SoCs.
This allows to:
  - Remove the calls to shmobile_init_delay() from the corresponding
    machine vectors,
  - Remove a check in timer setup specific to R-Car Gen2,
  - Remove a check in shmobile_init_delay().
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Define this symbol if the architecture either uses 64-bit pointers or the
PHYS_ADDR_T_64BIT is set.  This covers 95% of the old arch magic.  We only
need an additional select for Xen on ARM (why anyway?), and we now always
set ARCH_DMA_ADDR_T_64BIT on mips boards with 64-bit physical addressing
instead of only doing it when highmem is set.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NJames Hogan <jhogan@kernel.org>

Add the RZ/N1D SoC to the reset of the Renesas SoC Collection.
Signed-off-by: NMichel Pollet <michel.pollet@bp.renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add the RZ/N1 Family (Part #R9A06G0xx) ARCH config to the rest of
the Renesas SoC collection.
Signed-off-by: NMichel Pollet <michel.pollet@bp.renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add minimal support for the RZ/G1C (R8A77470) SoC.
Signed-off-by: NBiju Das <biju.das@bp.renesas.com>
Reviewed-by: NFabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The migration from ARCH_SHMOBILE_MULTI to ARCH_RENESAS has been
completed in v4.12 by commit 9ed2d4bc ("ARM: dts: renesas:
Switch from ARCH_SHMOBILE_MULTI to ARCH_RENESAS"), so the
ARCH_SHMOBILE_MULTI symbol can be removed.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This patch adds a OSTM driver for the Renesas architecture.
The OS Timer (OSTM) has independent channels that can be
used as a freerun or interval times.
This driver uses the first probed device as a clocksource
and then any additional devices as clock events.
Signed-off-by: NChris Brandt <chris.brandt@renesas.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>

Identify the SoC type and revision, and register this information with
the SoC bus, so it is available under /sys/devices/soc0/, and can be
checked where needed using soc_device_match().

Identification is done using the Product Register or Common Chip Code
Register, as declared in DT (PRR only for now), or using a hardcoded
fallback if missing.

Example:

    Detected Renesas R-Car Gen2 r8a7791 ES1.0
    ...
    # cat /sys/devices/soc0/{machine,family,soc_id,revision}
    Koelsch
    R-Car Gen2
    r8a7791
    ES1.0
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add minimal support for the RZ/G1E (R8A7745) SoC.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Select ARM errata 798181 on SoCs cores affected CA15 cores.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>

Add minimal support for the RZ/G1M (R8A7743) SoC.

Based on the original (and large) patch by Dmitry Shifrin
<dmitry.shifrin@cogentembedded.com>.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Sort alphabetically all symbols selected by ARCH_RENESAS
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

PCI_DOMAINS config should be selected for any SoCs
having more than a single PCIe controller. Without PCI_DOMAINS
config, only one PCIe controller gets registered.

Select PCI_DOMAINS in ARCH_MULTIPLATFORM if PCI is selected, since
it doesn't harm even if a platform has a single PCIe port.
Also remove PCI_DOMAINS being selected from other platform
specific configs.
Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com>
Acked-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add minimal support for the R-Car V2H (R8A7792) SoC.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This replaces:

- "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can
  now be selected directly.

- "select ARCH_WANT_OPTIONAL_GPIOLIB" with no dependency: GPIOLIB
  is now selectable by everyone, so we need not declare our
  intent to select it.

When ordering the symbols the following rationale was used:
if the selects were in alphabetical order, I moved select GPIOLIB
to be in alphabetical order, but if the selects were not
maintained in alphabetical order, I just replaced
"select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB".

Cc: Michael Büsch <m@bues.ch>
Cc: arm@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Move the pm-rcar driver from arch/arm/mach-shmobile/ to
drivers/soc/renesas/, and its header file to include/linux/soc/renesas/,
so it can be shared between arm32 (R-Car H1 and Gen2) and arm64 (R-Car
Gen3). Rename it to rcar-sysc as it's really a driver for the R-Car
System Controller (SYSC).

Kill the intermediate PM_RCAR config symbol, as it's not user
configurable anymore, and to prepare for SoC-specific make rules.

Add the missing #include <linux/types.h> to rcar-sysc.h, which was
exposed by different include order.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

All supported Renesas ARM SoCs (except for Emma Mobile EV2) have clock
domains. Some SoCs also have power domains. To ensure proper operation
of on-SoC modules, module clocks must be ungated, and power domains must
be powered up when needed.

Currently the user can choose to build a kernel with power management
enabled or disabled:
  - If CONFIG_PM=y, power domains and/or module clocks are handled
    dynamically by Runtime PM and the generic power domain.
  - If CONFIG_PM=n, power domains are assumed to be powered up by reset
    state or by the boot loader, and module clocks are handled by the
    legacy clock domain on driver (un)bind.
    The latter is implemented using a platform bus notifier, which
    applies not only to all on-SoC devices, but to all platform devices
    present in the system.

To remove the dependency on implicit assumptions, and to get rid of the
peculiarities of the legacy clock domain, enable CONFIG_PM and
CONFIG_PM_GENERIC_DOMAINS unconditionally, for all Renesas ARM SoCs with
clock and/or power domains.

This does cause an increase in kernel size.  Given bloat-o-meter reports
a modest increase of 26 KiB for an RZ/A1H kernel, this should not be a
problem, even when used on RZ/A1H with XIP and internal RAM only.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Remove comment that used to be part of non-multiplatform
kernel support. Now with multiplatform-only we have no
Renesas-specific System Configuration entries.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Acked-by: Nby: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Many ARM sub-architectures use prompts followed by "if" conditional,
but it is wrong.

Please notice the difference between

    config ARCH_FOO
            bool "Foo SoCs" if ARCH_MULTI_V7

and

    config ARCH_FOO
            bool "Foo SoCs"
            depends on ARCH_MULTI_V7

These two are *not* equivalent!

In the former statement, it is not ARCH_FOO, but its prompt that
depends on ARCH_MULTI_V7.  So, it is completely valid that ARCH_FOO
is selected by another, but ARCH_MULTI_V7 is still disabled. As it is
not unmet dependency, Kconfig never warns.  This is probably not what
you want.

The former should be used only when you need to do so, and you really
understand what you are doing.  (In most cases, it should be wrong!)

For enabling/disabling sub-architectures, the latter is always correct.

As a good side effect, this commit fixes some entries over 80 columns
(mach-imx, mach-integrator, mach-mbevu).

[Arnd: I note that there is not really a bug here, according to
 the discussion that followed, but I can see value in being consistent
 and in making the lines shorter]
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NHeiko Stuebner <heiko@sntech.de>
Acked-by: NPatrice Chotard <patrice.chotard@st.com>
Acked-by: NLiviu Dudau <Liviu.Dudau@arm.com>
Acked-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: NJun Nie <jun.nie@linaro.org>
Acked-by: NMatthias Brugger <matthias.bgg@gmail.com>
Acked-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: NShawn Guo <shawnguo@kernel.org>
Acked-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Acked-by: NKrzysztof Halasa <khc@piap.pl>
Acked-by: NMaxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The purpose of this patch is to start the process of replacing both
ARCH_SHMOBILE and ARCH_SHMOBILE_MULTI with ARCH_RENESAS.

RENESAS seems to be a more appropriate name than SHMOBILE for the majority
of Renesas 32-bit ARM based SoCs. The name is conveniently also (newer)
ARM64 based SoCs.

This patches only addresses 32-bit ARM based SoCs.  Proposed support for
the ARM64 based r8a7795 SoC already uses ARCH_RENESAS which selects
ARCH_SHMOBILE.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Obsoleted by removal of legacy platforms.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

With Bock-W, the last legacy platform has been removed.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Nby: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Obsoleted by removal of r8a7778 legacy platform.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Nby: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Replaced by multi-platform.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Nby: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Replaced by multi-platform.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add Clock Domain support to the RZ Clock Pulse Generator (CPG) driver
using the generic PM Domain.  This allows to power-manage the module
clocks of SoC devices that are part of the CPG/MSTP Clock Domain using
Runtime PM, or for system suspend/resume.

SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NStephen Boyd <sboyd@codeaurora.org>
Reviewed-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add Clock Domain support to the R-Car M1A Clock Pulse Generator (CPG)
driver using the generic PM Domain.  This allows to power-manage the
module clocks of SoC devices that are part of the CPG/MSTP Clock Domain
using Runtime PM, or for system suspend/resume.

SoC devices that are part of the CPG/MSTP Clock Domain and can be
power-managed through an MSTP clock should be tagged in DT with a proper
"power-domains" property.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NStephen Boyd <sboyd@codeaurora.org>
Reviewed-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Remove Marzen legacy board code written in C. Instead
board support expressed in DT shall be used together
with Multiplatform and shmobile_defconfig.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The generic r8a7779 machine vector is now feature-wise equivalent
to the Marzen-reference case, so simply remove the Marzen C board
code to fall over on the generic r8a7779 machine vector.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Regulator setup seems identical to Koelsch.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Minimal support without power management or SMP.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The last user of the R-Mobile A1 (r8a7740) legacy SoC code was the
Armadillo-800 EVA legacy board code, which has been removed.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
[horms: resolved trivial conflicts with v4.2-rc1]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>