arm64: dts: mediatek: mt6795: Add support for display blocks and DPI/DSI

Introduce all nodes for all of the display blocks in the MediaTek Helio
X10 MT6795 SoC, including the DSI PHY and DSI/DPI interfaces: those are
left disabled as usage is board specific.

Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230721082822.680010-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add PMIC Wrapper node

Add the pwrap node: this is used to communicate with the PMIC(s).

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-22-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add support for IOMMU and LARBs

Add nodes for the multimedia IOMMU and its LARBs: this includes all but
the MJC LARB, which cannot currently be used and will be added later.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-19-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add MMSYS node for multimedia clocks

Add the MultiMedia System node, providing clocks for the multimedia
hardware blocks and their IOMMU/SMIs.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-18-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add support for the CMDQ/GCE mailbox

In preparation for adding multimedia blocks, add the CMDQ/GCE mailbox.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-17-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add tertiary PWM node

The PWM at 0x11006000 is the tertiary PWM; unlike PWM0, PWM1, this is
not display specific and can be used as a generic PWM controller.

This node is left disabled as usage is board-specific.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230412112739.160376-21-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add VDECSYS and VENCSYS clocks

In prepration for adding the IOMMUs and LARBs of this SoC, add the
VDECSYS and VENCSYS clock controller nodes, providing clocks for the
vcodec stateful decoder and stateful decoder hardware.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230327083647.22017-11-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add SoC power domains

Add power domain tree for various hardware blocks on MT6795.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230327083647.22017-7-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add nodes for I2C controllers

Add all four I2C controller nodes but keep them in disabled state as
usage is board-dependant.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230327083647.22017-6-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add apmixedsys syscon node

Add the APMIXEDSYS node, providing a syscon to the APMIXED iospace and
also providing PLLs.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230327083647.22017-3-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add Frequency Hopping Controller node

Add FHCTL node but keep it disabled as the PLL clocks that should be
handled through FHCTL and the Spread Spectrum Clocking parameters are
board specific.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230327083647.22017-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mt6795: Add complete CPU caches information

This SoC's AP subsystem has 8x Cortex-A53 CPUs, specifically,
four CPUs per cluster, with two CPU clusters.

Each CPU has:
- A 32KB I-cache, 2-way set associative;
- A 32KB D-cache, 4-way set associative.

Each cluster has a unified 1MB L2 cache, 16-way set associative.

With that in mind, add the appropriate properties needed to specify the
caches information for this SoC, which will now be correctly exported
to sysfs.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221206112330.78431-6-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add support for eMMC/SD/SDIO controllers

Add the mmc nodes to support all of the four controllers, used for
eMMC, SD/MicroSD and SDIO storage.
All of these controller nodes are left disabled by default, as
usage is board dependent.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221027095504.37432-5-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add support for APDMA and wire up UART DMAs

This SoC has a DMA controller with tx/rx channels for all of the
UART controller IPs: add the apdma node and wire up the DMAs on
all controllers.
When one of the UART controllers is used as a serial console,
the DMA will be automatically ignored.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221027095504.37432-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Replace UART dummy clocks with pericfg

The UART nodes had a dummy clock for early bringup, as it is
expected that these are left on by the bootloader: now that
the pericfg clock controller is supported, we can replace
them with the real clocks.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221027095504.37432-3-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add topckgen, infra, peri clocks/resets

Add nodes for topckgen, infracfg and pericfg, providing various
clocks and resets and needed to support basic IPs of this SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221027095504.37432-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add CPUX system timer node

Add a node for mt6795-systimer: this is necessary to start the
System Timer(s) for all cores, finally making CNTVCT_EL0 usable.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220729093536.27623-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_133.RULE

Based on the normalized pattern:

this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license version 2 as
published by the free software foundation this program is distributed
in the hope that it will be useful merchantability or fitness for a
particular purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference.

Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arm64: dts: mediatek: mt6795: Specify interrupts for vGIC

Add the maintenance interrupt for GIC-400.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-11-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add pinctrl controller node

Add a node for the pinctrl controller found on MT6795 but without
configuration for any pin, as that's expected to be done in the
machine-specific devicetrees.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-10-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add ARM CCI-400 node and assign to CPUs

This SoC features an ARM CCI-400 IP: add the required node and
assign the cci control ports to the CPU cores.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-9-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add general purpose timer node

Add the timer node, enabling two GPTs, of which one will be used as
sched_clock.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-8-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Remove incorrect fixed-clocks

Remove the RTC and UART fixed clocks, as these were introduced to
temporarily provide a dummy clock to devices: since the two 26M/32K
fixed oscillators clocks (which do really exist in the SoC) have
been added, there's no reason to keep the aforementioned (and now
redundant) dummies in this devicetree.

In order to remove the uart dummy clock, it was necessary to also
reassign the clock of all UART nodes to clk26m.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-7-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add fixed clocks for 32kHz and 26MHz XOs

Add the 32kHz and 26MHz oscillators as fixed clocks in devicetree to
provide a good initial clock spec, since this SoC features two always
on oscillators running at the aforementioned frequencies.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-6-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add watchdog node to avoid timeouts

At least on commercial devices like some smartphones, the bootloader
will initialize the SoC watchdog and set it to reboot the board when
it times out. The last pet that this watchdog is getting is right
before booting the kernel and left it enabled as a protection against
boot failure: this means that Linux is expected to initialize this
device and pet as soon as possible, or it will bark and reset the AP.

In order to prevent that, add the required watchdog node as default
enabled: this will have no side effects on boards that are not
performing the aforementioned watchdog setup before booting Linux.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-5-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add Cortex A53 PMU nodes

Add the required nodes to enable the PMU on this SoC.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Add cpu-map and L2 cache

This SoC is HMP and has two clusters with four Cortex-A53 cores each:
declare a cpu map and, while at it, also add the next-level-cache
properties.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-3-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: mt6795: Create soc bus node and move mmio devices

MMIO devices should be inside of a soc bus node, as it's done for the
vast majority of ARM64 devicetrees, and for almost all MTK devicetrees.
Create a simple-bus soc node and move all devices with a MMIO address
space in there.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220609112303.117928-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

ARM64: dts: mt6795: enable basic SMP bringup for MT6795

This patch adds support SMP on MediaTek MT6795 Cortex-A53 Octa-core SoC.

Signed-off-by: Scott Shu <scott.shu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arm64: dts: mediatek: add mt6795 support

This adds basic chip support for MT6795 SoC

Signed-off-by: Mars Cheng <mars.cheng@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>