arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0

Enable PCIe Host controller channel 0 on R-Car S4-8 Spider board.

Since this board has an Oculink connector, CLKREQ# pin of PFC for PCIe
should not be used. So, using a GPIO is used to output the clock instead.
Otherwise the controller cannot detect a PCIe device.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230905012404.2915246-3-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: use capital "OR" for multiple licenses in SPDX

Documentation/process/license-rules.rst and checkpatch expect the SPDX
identifier syntax for multiple licenses to use capital "OR". Correct it
to keep consistent format and avoid copy-paste issues.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com> # Broadcom
Link: https://lore.kernel.org/r/20230823085146.113562-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arm64: dts: renesas: spider-cpu: Add GP LEDs

Describe the two General Purpose LEDs LED7 and LED8 on the Spider CPU
board, so they can be used as indicator LEDs.

Note that General Purpose LEDs LED9 to LED11 are not added, as they are
connected to GPIO block 4, which can only be accessed from the Control
Domain.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/fdaf6c700b624851039a60733c7f73a413c6d2c5.1690447094.git.geert+renesas@glider.be

arm64: dts: renesas: spider-cpu: Enable UFS device

Enable UFS device for R-Car S4-8 Spider CPU board.

Note that the conditions of RC21012 on the Spider are:
- OUT11 (for UFS30_REFCLK_V) is disabled as default.
- OUT11 is controlled by GPIO0 pin.
- The GPIO0 pin is inverted sense (low active) and pull-up enabled.

To output the clock, pin 4 of TCA9554 on the Spider board needs to
output low level so that using "gpio-gate-clock" for it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230113134639.338908-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: renesas: spider-cpu: Switch from SCIF3 to HSCIF0

Every loader before Linux utilizes HSCIF0 with a speed of 1843200 bps.
Make Linux behave the same.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220613131033.10053-2-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: renesas: spider-cpu: Add missing bootargs

This patch adds missing bootargs for R-Car S4 Spider board.

One note is that current Spider board doesn't have Ethernet
support yet, but this patch adds standard settings for it, too.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87leqo58ox.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: renesas: spider: Move aliases and chosen

The serial console and serial debug ports on Spider are located on the
CPU board. Hence move the aliases and chosen nodes containing serial
port configuration from the main Spider DTS file to the DTS file that
describes the CPU board.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/c03500bb10eae10caeb3f4f97bc979eeee6cce75.1663167551.git.geert+renesas@glider.be

arm64: dts: renesas: spider-cpu: Enable eMMC0

This enables the on-board eMMC on the Spider board. Switch SW3 has to be
in the default (neutral) position. Other settings will not be supported
upstream!

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20220711134656.277730-4-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: renesas: spider-cpu: Fix scif0/scif3 sort order

The scif0 nodes were accidentally inserted after the scif3 nodes,
breaking alphabetical sort order.

Fixes: 1614c8624a48b9c9 ("arm64: dts: renesas: spider-cpu: Enable SCIF0 on second connector")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/2fe0e782351c202ed009dcd658f4bceec8f3a56d.1656951240.git.geert+renesas@glider.be

arm64: dts: renesas: spider-cpu: Enable SCIF0 on second connector

The schematics label it as SCIF0 debug port.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220614193005.2652-1-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arm64: dts: renesas: spider-cpu: Add I2C4 and EEPROMs

Enable the I2C4 bus on the Falcon CPU board, and describe the I2C EEPROMs
present on the Spider CPU and BreakOut boards.

Extracted from a larger patch in the BSP by LUU HOAI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/6d8917e49f83b6a932970ca169100eb086d11f16.1643898884.git.geert+renesas@glider.be

arm64: dts: renesas: spider: Complete SCIF3 description

Complete the description of the serial console by adding RTS/CTS, the
external clock crystal, and pin control.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/8e5701ca2a5f5925918217ab79e8489535339e7b.1645458249.git.geert+renesas@glider.be

arm64: dts: renesas: spider-cpu: Enable watchdog timer

Enable the watchdog timer on the Spider board.

Extracted from a larger patch in the BSP by LUU HOAI.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/b36b2bb5770e10d906571721a3d73ca205b6f56e.1642525158.git.geert+renesas@glider.be

arm64: dts: renesas: Add Renesas Spider boards support

Initial support for the Renesas Spider CPU and BreakOut boards.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Takehito Nakamura <takehito.nakamura.nx@renesas.com>
Link: https://lore.kernel.org/r/20211201073308.1003945-14-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>