SCIF0 and SCIF1 are used as debug serial ports. Enable them and
configure pinmuxing appropriately. We can now remove the clkdev
registration hack for SCIF devices from the Lager reference board file.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[horms+renesas@verge.net.au: updated changelog to remove references to
                             device renaming]
[horms+renesas@verge.net.au: resolved conflicts]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The CMT (Compare Match Timer) driver implements a new style of platform
data that handles the timer as a single device with multiple channel.
Switch from the old-style platform data to the new-style platform data.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[horms+renesas@verge.net.au resolved conflict: use clk_names]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Move non-PFC and non-GPIO devices off from r8a7790_pinmux_init()
and into r8a7790_add_standard_devices() which is the normal place
to keep regular devices in the legacy case.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

R-Car H2 has many DMACs
(ex SYS-DMAC, 2D-DMAC, Audio-DMAC, USB-DMAC etc)
and, these DMAEngine needs DMA slave IDs to use it.

This patch adds new DMA slave ID list for r8a7790.
There, common part has RCAR_DMA_xxx prefix,
and Audio DMAC part has AUDIO_DMAC_SLAVE_xxx prefix.

Audio DMAC can be controlled via sh-dma-engine
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This fixes the issue introduced by the following commit:
b448c904 "ARM: shmobile: r8a7790: add I2C support"

The R8A7790 is an R-Car Gen2 SoC. The clock division factor
(CDF) width is 3 bits on Gen2 as opposed to 2 bits on Gen1.
Fix the device names for R8A7790 SoC to make the R-Car I2C
driver configure the hardware properly.

Changes in V2:
* rebased on top of the latest branch;
* capitalized ARM in the subject line;
* noted the commit that caused the issue in the log.
Signed-off-by: NValentine Barshak <valentine.barshak@cogentembedded.com>
Acked-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The field will be removed from the sh-sci driver. Don't set it and let
the driver handle baud rate calculation internally.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Passing the register base address and IRQ through platform data is
deprecated. Use resources instead.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The SCIF driver is transitioning to platform resources. Board code will
thus need to define an array of resources for each SCIF device. This is
incompatible with the macro-based SCIF platform data definition as an
array. Rework the macro to define platform data as individual
structures.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Break out the r8a7790 PFC platform device creation code
to increase readability and follow same style as r8a7791.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

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: NMagnus 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: NSimon Horman <horms+renesas@verge.net.au>

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

Add r8a7790 SMP support using the shared APMU code. To enable
SMP the r8a7790 specific DTS needs to be updated to include
CPU cores, and this is happening in a separate patch.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Platform data and resources for core devices are kmemdup()ed when the
corresponding devices are registered and can thus be declared as const.
Do so.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Rename r8a7790_init_delay() into r8a7790_init_early()
to make the function name show that more than just
delay setup may happen in the future.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This patch adds missing __initdata to driver data/resource
which are used from platform_device_register_xxx()
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Replace the call to shmobile_timer_init() with
clocksource_of_init(). This will allow us to
get rid of shmobile_timer_init().
Signed-off-by: NMagnus Damm <damm@opensource.se>
[horms+renesas@verge.net.au: include linux/clocksource.h]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This is sufficient to allow boot of the Lager board with
a console without boards-lager.c compiled into the kernel.
This is an example of a minimal but still useful initialisation
of the board using DT as much as possible.

As such it is the same as the boot of Lager that can be achieved
without a board file. The intention of adding this file
is to facilitate further work to allow board specific devices to be
initialised via DT.
Acked-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Update the r8a7790 arch timer setup code to configure the
frequency dynamically at boot time. This means that the arch
timer driver will be able to detect a timer frequency that
has been calculated based on the MD pins instead of a fixed
and potentially incorrect 13 MHz.

With this patch applied the Linux kernel will correctly
support the r8a7790 Lager board that uses a 20 Mhz EXTAL.
The arch timer will operate on 10 MHz and the Linux arch
timer driver will be correctly configured to use 10 MHz.

Without this patch the 20 MHz EXTAL will be used to drive
the arch timer at 10 MHz, but the Linux arch timer driver
will believe it is counting at 13 Mhz.
Reported-by: NUlrich Hecht <ulrich.hecht@gmail.com>
Signed-off-by: NMagnus Damm <damm@opensource.se>
Tested-by: NUlrich Hecht <ulrich.hecht@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Break out the r8a7790 boot mode code into a separate
function so it can be shared by multiple users.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Update the r8a7790 code to allow using other
timers than Arch timer for clock events.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add clock event support for CMT0 timer channel 0
to the r8a7790 SoC code. On most ARM mach-shmobile
the CMT is hooked up to a 32KHz clock but on r8a7790
a 31.7KHz clock is instead used.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The current temperature may be read using:
cat /sys/class/thermal/thermal_zone0/temp

Based on similar work for the r8a73a4 by Kuninori Morimoto.
Acked-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Replace the SoC-specific callback init_machine() with
a NULL to use the default code. This cleans up the code
and reduces the number of lines.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Commit ebafed7a ("ARM: irq: Call irqchip_init if no init_irq function is
specified") removed the need to explictly setup the init_irq field in
the machine description when using only irqchip_init. Remove that
declaration for shmobile as well.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This is an external component and may or may not be there, while the
internal clock always works.
Signed-off-by: NUlrich Hecht <ulrich.hecht@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Adds support for HSCIF0 and HSCIF1 on the r8a7790.
Signed-off-by: NUlrich Hecht <ulrich.hecht@gmail.com>
[ horms+renesas@verge.net.au this is the setup-r8a7790.c
  which I somehow miss-applied as part of another patch.
  The clock-r8a7790.c portion of this patch has already been merged. ]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

These data will be kmemdup()'ed on
platform_device_add_resources() and platform_device_add_data()
This patch removed "const" to avoid section type conflict
with r8a7790_boards_compat_dt
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

"gpio-rcar: Support IRQ_TYPE_EDGE_BOTH" adds support to the R-Car GPIO
driver for IRQ_TYPE_EDGE_BOTH. As hardware support for this feature is
not universal for all SoCs a flag, has_both_edge_trigger, has been
added to the platform data of the driver to allow this feature to be
enabled.

As the r8a7790 SoC hardware supports this feature enable it.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Move GPIOs handling from the PFC device to separate GPIO devices.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Implement a SoC-specific timer init function for
r8a7790 that makes sure the architected timer
is started regardless of boot loader setting.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add the GPIO I/O memory range to the r8a7790 PFC device.

This extra I/O memory range is needed when using the PFC
tables to drive both pin functions (using PINCTRL or
function GPIO for old code) and actual GPIO. The goal is
however to use a separate GPIO driver in the long run
and when that happens this extra I/O memory range can
be removed.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add a platform device for the r8a7790 PFC.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add IRQC interrupt controller support to r8a7790 by
hooking up a single IRQC instances to handle 4 external
IRQ signals. The IRQC controller is tied to SPIs of
the GIC. On r8a7790 the external IRQ pins routing is
handled by the PFC which is excluded from this patch.

Both platform devices and DT devices are added in this
patch. The platform device versions are used to provide
a static interrupt map configuration for board code
written in C.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add SCIF serial port support to the r8a7790 SoC by
adding platform devices for SCIFA0 -> SCIFA2 as well
as SCIFB0 -> SCIFB2 and SCIF0 -> SCIF1 together with
clock bindings. DT device description is excluded at
this point since such bindings are still under
development.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add initial support for the r8a7790 SoC including:
 - Single Cortex-A15 CPU Core
 - GIC
 - Architecture timer

No static virtual mappings are used, all the components
make use of ioremap(). DT_MACHINE_START is still wrapped
in CONFIG_USE_OF to match other mach-shmobile code.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>