The shmobile DT files available in the kernel are reference
implementations intended to be used as sample code, as well as for
development. As such, it makes sense to mount the root file system in
read/write mode by default.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

LED1 to LED4 are GPIO LEDs. Add corresponding DT nodes.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Create two GPIO-controlled fixed-voltage regulators in the
kzm9g-reference DT and remove manual configuration of the corresponding
GPIOs from board code.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Replace the pinctrl mappings in board code by device tree mappings.
For devices that are still instantiated from board code reference the
mappings as the default pin controller state to apply them at boot time.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

This adds DT bindings for an AS3711 PMIC, used for supplying power to the
CPU, some peripherals and the backlight, as well as extends the cpu0 DT
node with OPPs and a reference to the PMIC to support the CPUFreq and
CPU DVFS functions.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add a DT node for the SMSC 9221 ethernet chip, found on kzm9g, to its
reference implementation.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

To avoid having to repeat common DT node properties in all .dts files
move them to SoC's .dtsi file, setting their status to "disabled."
Individual boards will pick up devices, that they want to use and
change their DT node status to enabled.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

kzm9g supplies 3.3V to its SDHI0 and SDHI2 interfaces. Specifying 2.8V
prevents some (e.g. certain SDIO) cards from working. This patch fixes the
voltage and removes redundant OCR masks from platform data.
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add SDHI0 and SDHI2 interfaces to kzm9g-reference. With no pinctrl DT
support we cannot use GPIO card-detection and regulator switching.
Also update the MMCIF DT node to use all 8 data lines and avoid
redundant information in DT.

Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com
Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
[ horms+renesas@verge.net.au: Updated for pinmux changes by Laurent Pinchart ]
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Provide alternate board code for the kzm9g to demonstrate
how DT may be used given the current state of driver
device tree support. This is intended to act as a reference
for mach-shmobile developers.

Some notes:

* Brings up the GIC interrupt handler using device tree
* Brings up the following device using device tree:
  - MMCIF (MMC)
* Does not bring up the INTC interrupt controller at all,
  thus external devices may not be used. In particular,
  the SMSC ethernet device may not be used and thus
  NFS root may not be used.
* Uses existing C code and not device tree to initialise the following,
  which are needed for a working board:
  - SCIF (Serial)
  - CMT (Clock)
  - PFC (GPIO)

To use this alternate board code instead of the normal board code,
CONFIG_MACH_KZM9G_REFERENCE should be selected in the kernel config.
And the sh73a0-kzm9g-reference.dtb flattened device tree blob should be used.

Includes fix by Thierry Reding to no longer use gic_handle_irq()

Includes fixes by Guennadi Liakhovetski for recent pinmux changes.

Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

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

* Enable ARM_APPENDED_DTB

  Typically the bootloader of a kzm9g board does not support DT
  so this option is useful.

* Use voltage regulators by default

* Move command line to dts

  This brings us one small step closer to sharing defconfig
  between kzm9g and other boards
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

I got build errors with the new version now because machine_is_kzm9g is no longer
defined:

arch/arm/mach-shmobile/platsmp.c: In function 'shmobile_smp_get_core_count':
arch/arm/mach-shmobile/platsmp.c:29:2: error: implicit declaration of function 'of_machine_is_compatible'

Replace the missing function with a call to of_machine_is_compatible.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: N"Rafael J. Wysocki" <rjw@sisk.pl>
Acked-by: NMagnus Damm <magnus.damm@gmail.com>

Use DT_MACHINE_START() on the sh73a0 based KZM9G board.

Also include a tiny DTS file to describe the board and
update the Kconfig dependencies to select CONFIG_USE_OF.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>

Add generic DT board support for the sh7372 SoC V2.

SCIF serial ports and timers are kept as regular
platform devices. Other on-chip and on-board devices
should be configured via the device tree.

Tested on the mackerel board via kexec using a zImage
kernel with an appended dtb.

At this point there is no interrupt controller support
in place but such code will be added over time when
proper IRQ domain support has been added to INTC.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>