[PATCH v4 0/4] Add Laguna/Tensor G5 SoC and Frankel, Blazer & Mustang boards

Hi folks,

This series adds initial basic support for Laguna (Tensor G5 SoC)
found in Frankel (Pixel 10), Blazer (Pixel 10 Pro) and Mustang (Pixel
10 Pro XL) phones.

Whilst Tensor G1 to G4 SoCs (found in Pixel 6 to Pixel 9 and Pixel
10a) were offshoots from the Samsung Exynos family. Laguna is an
entirely in-house Google designed SoC.

Currently this series adds very basic DT capable of booting to a
initramfs busybox shell and is a v3 of Dougs original v1 submission
with the contentious DT overlay parts removed.

Whilst there is still interest in resolving the DT overlay topic (as
I believe many vendors use this approach). I would like to decouple
merging initial Laguna / Pixel 10  support from resolving that
particular issue. I believe Doug intends to revisit the topic again at
Linux Plumbers in Prague later this year.

In v2 I've updated to use the usual upstream approach of having
individual board files e.g. lga-frankel.dtb, lga-blazer.dtb,
lga-mustang.dtb  the same as gs101-oriole.dtb and gs101-raven.dtb.

It is worth noting, that with what is currently supported upstream there
aren't any known differences versus pre mass production boards yet. So
lga-blazer.dtb boots fine on my EVT 1.1 board with A0 silicon.

At the point where differences do arise, we may need to either add A0
silicon cut and other board variants upstream, or keep upstream as
purely MP/B0 silicon and maintain a separate out of tree DT that uses
overlays for Googlers needing to use pre MP devices. So far at least
with Pixel 6 that wasn't necessary.

Folks interested in trying this out and booting a pure upstream kernel
on their own Pixel 10 device may wish to use the build system and docs
found here:

https://gitlab.com/LinaroLtd/googlelt/pixelscripts

Example commands:

make RUNTARGET=frankel flash
make RUNTARGET=blazer flash

Also in v2 I've added support for ramoops reserved-memory carveout and
tested with `console=pstore` kernel argument. Additionally carveouts
for the ABL bootloader are added (which is used when doing a debug
boot (e.g. after a watchdog timeout). This allows for the extraction
of various logs via fastboot oem commands (bootloader / kernel
logs). The bootloader log can also be quite useful as it contains some
amount of on device debug parsing which can provide some hints after a
crash.

Note: In v3 the ufs0 alias has been removed but the bootloader will
consider a missing ufs0 alias a fatal error. Whilst we wait for a new
bootloader release that changes that behaviour (kudos to Doug) the
pixelscripts Makefile [1] will apply the node so that upstream DTBs
are kept clean but things still boot on the device (see [1]).

regards,

Peter

[1] https://gitlab.com/LinaroLtd/googlelt/pixelscripts/-/commit/156bd361b39c55303cb4de33cd66ace9b1f610f2

Changes in v4:
- Fix one remaining dt-check-style in lga-frankel (Peter)
- Fix one remaining dt-check-style in lga-pixel-common (Peter)
- Link to v3: https://lore.kernel.org/r/20260918-contrib-pg-pixel10-initial-dts-v3-0-c94e51140509@linaro.org (local)

Changes in v3:
- Rebase on next-20260918
- Collect up Reviewed-by / Tested-by tags
- Use 0x0 instead of 0 consistently for new code (Krysztof)
- Remove 'ranges' from gic-v3 as no msi child node with unit address (Krysztof)
- Remove ufs0 alias and ufs placeholder node (Krysztof)
- Remove memory node from lga.dtsi (Krysztof)
  It turns out bootloader adds the memory node anyway
- Use standard '/ {' not overlay style (Krysztof)
- Update alias to point at label (Brian)
- Remove GIC_CPU_MASK_SIMPLE for gicv3 interrupt controller (Shashiko)
- Fix dt-check-style --mode=strict warnings (Peter)
- Link to v2: https://lore.kernel.org/r/20260722-contrib-pg-pixel10-initial-dts-v2-0-3abae9717feb@linaro.org/ (local)

Changes in v2:
- Enable CONFIG_ARCH_GOOGLE in arm64 defconfig
- Remove all the pre-production dt binding support (EVT, DVT, a0)
- Remove dtbo overlays and add individual board dts
- Update to lga-pixel-common naming like gs101-pixel-common
- Reorder nodes alpha-numerically by the node name
- Add ramoops reserved-memory (tested with console=pstore)
- Add reserved-memory for bootloader & gsa logs
- Add reserved-memory for Android BootLoader ABL (used on Watchdog
  reset to extract boolotader logs / parse breadcrumbs / ramdump etc).
- Add osc 38.4Mhz fixed-clock
- Link to v1: https://lore.kernel.org/lkml/20251111192422.4180216-1-dianders@chromium.org/ (local)

To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: André Draszik <andre.draszik@linaro.org>
To: Tudor Ambarus <tudor.ambarus@linaro.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jiri Slaby <jirislaby@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
To: Will Deacon <will@kernel.org>
To: Arnd Bergmann <arnd@arndb.de>
To: Krzysztof Kozlowski <krzk@kernel.org>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Linus Walleij <linusw@kernel.org>
To: Drew Fustini <fustini@kernel.org>
To: Kees Cook <kees@kernel.org>
To: Tony Luck <tony.luck@intel.com>
To: Guilherme G. Piccoli <gpiccoli@igalia.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Juan Yescas <redacted>
Cc: RD Babiera <redacted>
Cc: Brian Norris <redacted>
Cc: William McVicker <redacted>
Cc: devicetree@vger.kernel.org
Cc: kernel-team@android.com
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Cc: soc@lists.linux.dev

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
---
Douglas Anderson (2):
      arm64: dts: google: Add dts directory for Google-designed silicon
      arm64: dts: google: Add initial dts for frankel/blazer/mustang

Peter Griffin (2):
      dt-bindings: arm: google: Add dt bindings for frankel/blazer/mustang
      arm64: defconfig: enable Tensor G5 SoC family

 Documentation/devicetree/bindings/arm/google.yaml |  48 ++-
 MAINTAINERS                                       |   1 +
 arch/arm64/Kconfig.platforms                      |   8 +
 arch/arm64/boot/dts/Makefile                      |   1 +
 arch/arm64/boot/dts/google/Makefile               |   6 +
 arch/arm64/boot/dts/google/lga-blazer.dts         |  15 +
 arch/arm64/boot/dts/google/lga-frankel.dts        |  15 +
 arch/arm64/boot/dts/google/lga-mustang.dts        |  15 +
 arch/arm64/boot/dts/google/lga-pixel-common.dtsi  |  22 ++
 arch/arm64/boot/dts/google/lga.dtsi               | 413 ++++++++++++++++++++++
 arch/arm64/configs/defconfig                      |   1 +
 11 files changed, 526 insertions(+), 19 deletions(-)
---
base-commit: 3f2425f5b5bbbdd991ca9cdfd5502e68d8895998
change-id: 20260710-contrib-pg-pixel10-initial-dts-49f5ec657b66

Best regards,
-- 
Peter Griffin [off-list ref]