ARM: shmobile: rcar-gen2: Drop unused OF includes

of_platform.h is not needed, so drop it.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230717225614.3214179-1-robh@kernel.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

ARM: shmobile: Drop commas after dt_compat sentinels

It does not make sense to have a comma after a sentinel, as any new
elements must be added before the sentinel.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/ab4acc22eebb96a0747eb301c878b24b1200736a.1646311825.git.geert+renesas@glider.be

dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>

Merge dma-contiguous.h into dma-map-ops.h, after removing the comment
describing the contiguous allocator into kernel/dma/contigous.c.

Signed-off-by: Christoph Hellwig <hch@lst.de>

ARM: shmobile: rcar-gen2: Make rcar_gen2_{timer_init, reserve}() static

As of commit 1e90fea35b80cfe1 ("ARM: shmobile: r8a7791: Use common R-Car
Gen2 machine definition"), there are no more users of
rcar_gen2_timer_init() and rcar_gen2_reserve() outside
arch/arm/mach-shmobile/setup-rcar-gen2.c.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200908074403.4379-1-geert+renesas@glider.be

ARM: shmobile: r8a7742: Basic SoC support

Add minimal support for the RZ/G1H (R8A7742) SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/1587678050-23468-10-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

ARM: shmobile: Replace <linux/clk-provider.h> by <linux/of_clk.h>

The R-Car Gen2 platform code is not a clock provider, and just needs to
call of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20200212100830.446-6-geert+renesas@glider.be

ARM: shmobile: rcar-gen2: Drop legacy DT clock support

As of commit 362b334b17943d84 ("ARM: dts: r8a7791: Convert to new
CPG/MSSR bindings"), all upstream R-Car Gen2 device tree source files
use the unified "Renesas Clock Pulse Generator / Module Standby and
Software Reset" DT bindings.

Hence remove backward compatibility with old R-Car Gen2 device trees
describing a hierarchical representation of the various CPG and MSTP
clocks.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191016150939.30620-1-geert+renesas@glider.be

ARM: mach-shmobile: Don't init CNTVOFF/counter if PSCI is available

If PSCI is available then most likely we are running on PSCI-enabled
U-Boot which, we assume, has already taken care of resetting CNTVOFF
and updating counter module before switching to non-secure mode
and we don't need to.

As the psci_smp_available() helper always returns false if CONFIG_SMP
is disabled, it can't be used safely as an indicator of PSCI usage.
For that reason, we check for the mandatory PSCI operation to be
available.

Please note, an extra check to prevent secure_cntvoff_init() from
being called for secondary CPUs in headsmp-apmu.S is not needed,
as SMP code for APMU based system is not executed if PSCI is in use.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7744: Basic SoC support

Add minimal support for the RZ/G1N (R8A7744) SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Always enable ARCH_TIMER on SoCs with A7 and/or A15

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: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: convert to SPDX identifier

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7791: Use common R-Car Gen2 machine definition

Now r8a7791 no longer needs the SMP initialization fallback, it can use
the common R-Car Gen2 machine definition, and the r8a7791-specific one
can be removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7790: Use common R-Car Gen2 machine definition

Now r8a7790 no longer needs the SMP initialization fallback, it can use
the common R-Car Gen2 machine definition, and the r8a7790-specific one
can be removed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Convert file to use cntvoff

Now that a common function is available for CNTVOFF's
initialization, let's convert shmobile-apmu code to use
this function.

Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

ARM: shmobile: r8a77470: basic SoC support

Add minimal support for the RZ/G1C (R8A77470) SoC.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Make sure CNTVOFF is initialized on CA7/15

On Cortex-A7, the arch timer CNTVOFF register is uninitialized.
Ideally it should be initialized by the boot loader, but it isn't.

For the boot CPU, CNTVOFF is initialized by Linux since commit
9ce3fa6816c2fb59 ("ARM: shmobile: rcar-gen2: Add CA7 arch_timer
initialization for r8a7794").
For secondary CPU cores, no such initialization is done.

Hence when enabling SMP on r8a7794, the kernel log is spammed with:

WARNING: Underflow in clocksource 'arch_sys_counter' observed, time update ignored.
Please report this, consider using a different clocksource, if possible.
Your kernel is probably still fine.

As Marc Zyngier pointed out that Cortex-A15 and Cortex-A7 are similar with
respect to CNTVOFF, we have been very lucky this just worked on R-Car
Gen2 SoCs with Cortex-A15 cores.

To fix this:
- Move the existing inline asm code to initialize CNTVOFF to an
assembler source file (adding comments and replacing hardcoded
constants by definitions in the process), so it can be reused,
- Perform the initialization of CNTVOFF on the boot CPU (Cortex-A15 or
Cortex-A7) on all R-Car Gen2 and RZ/G1 parts,
- Wrap the standard secondary_startup() routine inside a routine which
initializes CNTVOFF.

Based on patches by Hisashi Nakamura in the BSP.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Correct arch timer frequency on RZ/G1E

According to the datasheet, the frequency of the ARM architecture timer
on RZ/G1E depends on the frequency of the ZS clock, just like on R-Car
E2 and V2H.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Add support for CPG/MSSR bindings

When using the new CPG/MSSR bindings, there is no longer a
"renesas,rcar-gen2-cpg-clocks" node, and the code to obtain the external
clock crystal frequency falls back to a default of 20 MHz.
While this is correct for all upstream R-Car Gen2 and RZ/G1 boards, this
is not necessarily the case for out-of-tree third party boards.

Add support for finding the external clock crystal oscillator on RZ/G1M,
and on R-Car H2, M2-W, and M2-N using the new CPG/MSSR bindings, through
the corresponding "renesas,r8a77xx-cpg-mssr" nodes.

Note that this is not needed on R-Car V2H and E2, and on RZ/G1E, as on
those SoCs the arch_timer and generic counter clock is derived from the
ZS clock instead.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

clocksource/drivers: Rename clocksource_probe to timer_probe

The function name is now renamed to 'timer_probe' for consistency with
the CLOCKSOURCE_OF_DECLARE => TIMER_OF_DECLARE change.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

ARM: shmobile: rcar-gen2: Remove unused rcar_gen2_read_mode_pins()

After
1. commit 9f5ce39ddb8f68b3 ("ARM: shmobile: rcar-gen2: Obtain extal
frequency from DT"),
2. commit 80951f04c3f92533 ("ARM: shmobile: rcar-gen2: Stop passing
mode pins state to clock driver"),
3. and handling of debug resource reset,
there are no more users of rcar_gen2_read_mode_pins() left.
Remove the function and its support definitions.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7745: basic SoC support

Add minimal support for the RZ/G1E (R8A7745) SoC.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Stop passing mode pins state to clock driver

Now the R-Car Gen2 CPG clock driver obtains the state of the mode pins
from the R-Car RST driver, there's no longer a need to pass this state
explicitly. Hence we can just call of_clk_init() instead.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>

ARM: shmobile: Consolidate R8A7743 and R8A779[234] machine definitions

The four SoCs use identical machine operations, consolidate them into
two machine definitions in a single file.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: only call rcar_gen2_clocks_init() if present

The RZ/G1M (r8a7743) uses the R-Car Gen2 core, but not the R-Car Gen2 clock
driver. This is a harbinger of a transition for R-Car Gen2 SoCs. As the
process to get all the required pieces in place is somewhat complex it
seems useful to try to disentangle dependencies where possible.

The approach here is to temporarily disable calling rcar_gen2_clocks_init()
if no R-Car Gen2 SoC are configured and thus the symbol will not be
present.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

ARM: shmobile: rcar-gen2: Correct arch timer frequency on R-Car V2H

According to the datasheet, the frequency of the ARM architecture timer
on R-Car V2H depends on the frequency of the ZS clock, just like on
R-Car E2.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Obtain extal frequency from DT

On some R-Car Gen2 SoCs, the frequency of the ARM architecture timer
depends on the frequency of the external clock crystal. Currently the
latter is determined indirectly from the state of the mode pins, which
is a relic predating DT.

Obtain the external clock crystal frequency from DT instead, removing
the dependency on the mode pins.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

clk: renesas: Rename header file renesas.h

This is part of an ongoing process to migrate from ARCH_SHMOBILE to
ARCH_RENESAS the motivation for which being that RENESAS seems to be a more
appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs.

Along with the above mentioned Kconfig changes it seems appropriate
to also rename files.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

ARM: shmobile: rcar-gen2: Make rcar_gen2_dma_contiguous static

make C=1:

arch/arm/mach-shmobile/setup-rcar-gen2.c:186:12: warning: symbol 'rcar_gen2_dma_contiguous' was not declared. Should it be static?

Make it static, and move it inside the function to avoid a "defined but
not used" warning if CONFIG_DMA_CMA=n.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

clocksource: cosmetic: Drop OF 'dependency' from symbols

Seeing the 'of' characters in a symbol that is being called from
ACPI seems to freak out people. So let's do a bit of pointless
renaming so that these folks do feel at home.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

ARM: shmobile: R-Car Gen2: CONFIG_ARCH_SHMOBILE_MULTI is always set

Since commit e042681894b62d60 ("ARM: shmobile: r8a7790: Remove legacy
code"), all R-Car Gen2 SoCs are supported by multiplatform kernels only.
As CONFIG_ARCH_SHMOBILE_MULTI is always set for shmobile multiplatform
kernels, we can remove related #ifdefs in code specific to R-Car Gen2
SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: R-Car Gen2: CONFIG_COMMON_CLK is always set

Since commit e042681894b62d60 ("ARM: shmobile: r8a7790: Remove legacy
code"), all R-Car Gen2 SoCs are supported by multiplatform kernels only.
As CONFIG_COMMON_CLK is always set for multiplatform kernels, we can
remove related #ifdefs in code specific to R-Car Gen2 SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: No R-Car Gen2 CMA reservation when HIGHMEM=n

Allow R-Car Gen2 platforms to boot with CMA enabled
and HIGHMEM disabled. This patch adds code to check
if the R-Car Gen2 specific memory reservation window
is included in the kernel memory range or not. When
HIGHMEM is disabled the R-Car Gen2 reservation area is
outside the kernel memory range and in such case the
memory reservation is simply skipped over.

Without this patch the kernel boot hangs when CMA is
enabled and HIGHMEM is disabled on the r8a7791 Koelsch
hardware platform:

WARNING: CPU: 1 PID: 1 at mm/cma.c:113 cma_init_reserved_areas+0x88/0x1d4()
...
WARNING: CPU: 1 PID: 1 at mm/cma.c:121 cma_init_reserved_areas+0xf8/0x1d4()
...
Unable to handle kernel NULL pointer dereference at virtual address 00000160
pgd = c0003000
[00000160] *pgd=80000040004003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP ARM
Modules linked in:
CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W
3.19.0-rc4-koelsch-01450-g7f9b6075ce12c3ea-dirty #735
Hardware name: Generic R8A7791 (Flattened Device Tree)
task: edc553c0 ti: edc56000 task.ti: edc56000
PC is at set_pfnblock_flags_mask+0x54/0xa0
LR is at 0x440

In the current shmobile_defconfig HIGHMEM is enabled
while CMA is disabled, so to trigger this the kernel
configuration for both CMA and HIGHMEM needs to be
adjusted.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds

As of commit 9a1091ef0017c40a ("irqchip: gic: Support hierarchy irq
domain."), the Lager legacy board support is known to be broken.

The IRQ numbers of the GIC are now virtual, and no longer match the
hardcoded hardware IRQ numbers in the legacy platform board code.

To fix this issue specific to non-multiplatform r8a7790 and Lager:
1) Instantiate the GIC from platform board code and also
2) Skip over the DT arch timer as well as
3) Force delay setup based on DT CPU frequency

With these 3 fixes in place interrupts on Lager are now unbroken.

Partially based on legacy GIC fix by Geert Uytterhoeven, thanks to
him for the initial work.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Fix is_e2 warning

Fix "is_e2" warning introduced by:

9ce3fa6 ARM: shmobile: rcar-gen2: Add CA7 arch_timer initialization for r8a7794

Only triggers on kernel configurations that have ARCH_ARM_TIMER=n.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Remove FSF address from copyright headers

The information is already included in the COPYING file in the kernel
sources root directory, we don't want to modify all source files when
the FSF will move to a new address, and I'm tired of seeing the related
checkpatch.pl warnings.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Add CA7 arch_timer initialization for r8a7794

On E2, the arch timer is hooked up to a different clock, and the CA7's arch
timer CNTVOFF register must be initialized.

Based on work by Hisashi Nakamura.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: update call to dma_contiguous_reserve_area

Commit 5ea3b1b2f8ad 'cma: add placement specifier for "cma=" kernel parameter'
adds a new 'fixed' parameter to dma_contiguous_reserve_area(). Update
rcar_gen2_reserve() accordingly.

This fixes the following compilation error:

arch/arm/mach-shmobile/setup-rcar-gen2.c: In function ‘rcar_gen2_reserve’:
arch/arm/mach-shmobile/setup-rcar-gen2.c:182:10: error: too few arguments to function ‘dma_contiguous_reserve_area’

Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Remove useless copied section for LongTrail

Open Firmware in the CHRP LongTrail does not support plugging in ARM CPUs
in its PPC 603e/604e-compatible CPU socket ;-)

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Use "1ULL" instead of "(u64)1"

Casts are evil

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Update for of_get_flat_dt_prop() update

Commit 9d0c4dfedd96ee54fc075b16d02f82499c8cc3a6 ("of/fdt: update
of_get_flat_dt_prop in prep for libfdt") changed the function prototypes
of of_get_flat_dt_prop():
- The return type was made const,
- The last parameter was changed from "unsigned long *" to "int *".
and dt_mem_next_cell():
- The second parameter was made const.

This causes the following compiler warnings:

arch/arm/mach-shmobile/setup-rcar-gen2.c: In function 'rcar_gen2_scan_mem':
arch/arm/mach-shmobile/setup-rcar-gen2.c:125:15: warning: initialization discards 'const' qualifier from pointer target type [enabled by default]
arch/arm/mach-shmobile/setup-rcar-gen2.c:142:2: warning: passing argument 3 of 'of_get_flat_dt_prop' from incompatible pointer type [enabled by default]
include/linux/of_fdt.h:53:20: note: expected 'int *' but argument is of type 'long unsigned int *'
arch/arm/mach-shmobile/setup-rcar-gen2.c:142:6: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]
arch/arm/mach-shmobile/setup-rcar-gen2.c:144:3: warning: passing argument 3 of 'of_get_flat_dt_prop' from incompatible pointer type [enabled by default]
include/linux/of_fdt.h:53:20: note: expected 'int *' but argument is of type 'long unsigned int *'
arch/arm/mach-shmobile/setup-rcar-gen2.c:144:7: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]
arch/arm/mach-shmobile/setup-rcar-gen2.c:152:3: warning: passing argument 2 of 'dt_mem_next_cell' from incompatible pointer type [enabled by default]
include/linux/of_fdt.h:69:12: note: expected 'const __be32 **' but argument is of type '__be32 **'
arch/arm/mach-shmobile/setup-rcar-gen2.c:153:3: warning: passing argument 2 of 'dt_mem_next_cell' from incompatible pointer type [enabled by default]
include/linux/of_fdt.h:69:12: note: expected 'const __be32 **' but argument is of type '__be32 **'

Update the variable types in rcar_gen2_scan_mem() to fix this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: rebased]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Add shared R-Car Gen2 CMA reservation code

Add R-Car Gen2 CMA memory reservation code that can be
shared between multiple SoCs and boards. At this point
r8a7790 and r8a7791 are supported.

The top 256MiB of the legacy 32-bit physical memory space
is assigned to a separate CMA area that may be assigned
to various devices later on.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: rebased]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Move rcar-gen2.h, cleanup r8a7790 case

Change location of rcar-gen2.h so it can be used as #include "rcar-gen2.h"
instead of the old style #include <mach/rcar-gen2.h>. Also clean up
the r8a7790 case to follow the same style as r8a7791.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Move common.h

Change location for common.h so it can be used as #include "common.h"
instead of the old style #include <mach/common.h>.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Cache Mode Monitor Register Value

The MD pins are sampled at reset time, hence the read value will always be
the same, and we can avoid the overhead of ioremapping the register on
every read.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Remove __init from rcar_gen2_read_mode_pins()

Remove __init from rcar_gen2_read_mode_pins() to allow
it to be used after boot. For instance the R-Car Gen2
MD21 check is needed even in the case of CPU Hotplug.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: rcar-gen2: Initialize CCF before clock sources

When CONFIG_COMMON_CLOCK is enabled, call rcar_gen2_clocks_init() in the
timer init function to initialize the common clock framework before
initializing the clock sources. This will take care of clock
initialization when the r8a779[01] boards will be switched to
multiplatform kernels.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: rcar-gen2: Do not setup timer in non-secure mode

If the system has been started in non-secure mode, then the ARM generic
timer is not configurable during the kernel initialisation. Currently
the only thing we can check for is if the timer has been correctly
configured during the boot process.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Ian Molton <ian.molton@codethink.co.uk>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Break out R-Car Gen2 setup code

Move arch timer workaround code and boot mode pin
handling from setup-r8a7790.c to setup-rcar-gen2.c.

With this in place the same code can be used on
other R-Car Generation 2 devices such as r8a7791.

Signed-off-by: Magnus Damm <damm@opensource.se>
[horms+renesas@verge.net.au trivial rebase of board-lager.c
for introduction of lager_add_standard_devices()]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

ARM: shmobile: Break out R-Car Gen2 setup code

Move arch timer workaround code and boot mode pin
handling from setup-r8a7790.c to setup-rcar-gen2.c.

With this in place the same code can be used on
other R-Car Generation 2 devices such as r8a7791.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>