Name the Pin Function Controller subnode for SCIF2 after its device
name, instead of using some arbitrary name that looks like a serial port
alias, but differs from the actual alias.

This avoids conflicts when enabling support for more serial ports later,
either here or in a DT overlay.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Since 16ccaf5b ("pinctrl: sh-pfc: Accept standard function, pins and
groups properties") renesas pfc drivers accept generic "function", "pins"
and "groups" properties.

This patch updates the alt device tree to use the generic properties.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>

Add and enable the external crystal for the SCIF_CLK and its pinctrl, to
be used by the Baud Rate Generator for External Clock (BRG) on (H)SCIF.

This increases the range and accuracy of supported baud rates.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Enable the QSPI controller in the alt device tree.

Based similar work for the silk board by by Vladimir Barinov and
Sergei Shtylyov.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>

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

22b16071 ("ARM: shmobile: alt: Add pfc pins to DT") introduced pfc pins
to the alt device tree but did not reference them. This patch fixes ether
pfc by:

* Referencing ether pins
* Adding and referencing phy1 pins
* Removing ether b pins. These are not used in the configuration
  of the alt board used for testing and empirically their presence
  prevents ethernet from functioning correctly in that environment.
Reported-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

22b16071 ("ARM: shmobile: alt: Add pfc pins to DT") introduced pfc pins
to the alt device tree but did not reference them. This patch fixes scif2
pfc by adding references to the scif2 pins.
Reported-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Tie in r8a7794 PFC DU support to the VGA port on the
r8a7794 ALT board.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Adds the device board-dependent part of the VIN0 device and its ADV7180
video decoder on I2C1, and the interconnection between them.

Based on silk patch by Sergei Shtylyov.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Defines the board-dependent part of the I2C1 device.
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

PFC is already enabled on the r8a7794.
This adds pins for devices already enabled in DT on
the r8a7794 based alt board.

Based on work by Mitsuhiro Kimura and Hisashi Nakamura.

Cc: Mitsuhiro Kimura <mitsuhiro.kimura.kc@renesas.com>
Cc: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>

Enable the DU device and the VGA port available on the r8a7794
ALT board. The VGA portion of the ALT board is somewhat similar
to the Lager board but in case of ALT the DU1 pins are used
and the X2 clock has a reduced frequency.

This patch does not include any pinctrl (PFC) settings due to lack
of PFC DT integration on r8a7794. At this point the default state
of the boot loader is enough to keep the VGA port working without
changing any pinctrl settings.
Signed-off-by: NMagnus Damm <damm+renesas@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

The PHY IRQ line is connected to external IRQ8, not IRQ0. Fix DT
accordingly.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Enable the ethernet controller for the Alt board. Pin muxing entries are
currently left out as r8a7794 pin control support isn't available yet.
We thus rely on the boot loader to configure ethernet pins for now.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

While the DT parsing code recognizes "ok" as a valid value for the
"status" property, ePAPR v1.1 doesn't mention it in the list of valid
values.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Alt is booted from DT, so chosen/stdout-path is
always used, and we can drop the "console=" parameter from chosen/bootargs.

This change has a side-effect of changing the console speed from 38400
to 115200. This is intentional as 115200 is consistently used on
all other shmobile boards.
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Add a stdout-path property so that automatic console selection works
in the absence of a "console=" parameter on the kernel command line.

Note that we have to keep the "console=ttySC0,38400" parameter in
chosen/bootargs, else the console will use the default setting of 115200
baud.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

Signed-off-by: NHisashi Nakamura <hisashi.nakamura.ak@renesas.com>
[uli: reduced to minimum, added cmt, enabled scif2, split off from SoC]
Signed-off-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>