linux-kernel - [GIT PULL] RISC-V Tenstorrent Devicetree for v6.19

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Message-ID: <aPUemXdOFZEdkayE@x1>
Date: Sun, 19 Oct 2025 10:23:37 -0700
From: Drew Fustini <fustini@...nel.org>
To: soc@...nel.org
Cc: Arnd Bergmann <arnd@...db.de>, Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Alexandre Ghiti <alex@...ti.fr>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Samuel Holland <samuel.holland@...ive.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Anup Patel <anup@...infault.org>, Joel Stanley <joel@....id.au>,
	Joel Stanley <jms@....tenstorrent.com>,
	Nicholas Piggin <npiggin@....tenstorrent.com>,
	Michael Neuling <mikey@...ling.org>,
	Michael Ellerman <mpe@...nel.org>, Andy Gross <agross@...nel.org>,
	Anirudh Srinivasan <asrinivasan@....tenstorrent.com>,
	Paul Walmsley <pjw@...nel.org>,
	Drew Fustini <dfustini@....tenstorrent.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org
Subject: [GIT PULL] RISC-V Tenstorrent Devicetree for v6.19

Hi Arnd,

Please pull these changes which add Tenstorrent as a vendor and enable
support for Blackhole. It adds the appropriate entries in MAINTAINERS.
The changes all come from a single series [1] posted by myself. Joel
Stanley has reviewed and tested all the patches. Rob acked or reviewed
all the bindings patches. W=1 dtbs_check and dt_binding_check produce
no warnings.

[1] https://lore.kernel.org/linux-riscv/20251013-tt-bh-dts-v3-0-9f058d4bbbda@oss.tenstorrent.com/

Thanks,
Drew

The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:

  Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)

are available in the Git repository at:

  git@...hub.com:tenstorrent/linux.git tags/tenstorrent-dt-for-v6.19

for you to fetch changes up to a71e6e8eea8ae2d624f097911f43357bba06d2a5:

  riscv: defconfig: Enable Tenstorrent SoCs (2025-10-18 10:44:15 -0700)

----------------------------------------------------------------
Tenstorrent device tree for v6.19

Add Tenstorrent as a vendor and enable support for the Blackhole SoC
in Blackhole P100 and P150 PCIe cards. The SoC contains four RISC-V
CPU tiles consisting of 4x SiFive X280 cores.

There is a virtual UART implemented in OpenSBI firmware that allows a
console program on the PCIe host to communicate through shared memory
with Linux running on the Blackhole card.

Link: https://github.com/tenstorrent/tt-bh-linux
Link: https://github.com/tenstorrent/opensbi/
Signed-off-by: Drew Fustini <fustini@...nel.org>

----------------------------------------------------------------
Drew Fustini (8):
      dt-bindings: vendor-prefixes: Add Tenstorrent AI ULC
      dt-bindings: riscv: Add Tenstorrent Blackhole compatible
      dt-bindings: riscv: cpus: Add SiFive X280 compatible
      dt-bindings: timers: Add Tenstorrent Blackhole compatible
      dt-bindings: interrupt-controller: Add Tenstorrent Blackhole compatible
      riscv: dts: Add Tenstorrent Blackhole SoC PCIe cards
      riscv: Kconfig.socs: Add ARCH_TENSTORRENT for Tenstorrent SoCs
      riscv: defconfig: Enable Tenstorrent SoCs

 .../interrupt-controller/sifive,plic-1.0.0.yaml    |   1 +
 Documentation/devicetree/bindings/riscv/cpus.yaml  |   1 +
 .../devicetree/bindings/riscv/tenstorrent.yaml     |  28 ++++++
 .../devicetree/bindings/timer/sifive,clint.yaml    |   1 +
 .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
 MAINTAINERS                                        |   9 ++
 arch/riscv/Kconfig.socs                            |   8 ++
 arch/riscv/boot/dts/Makefile                       |   1 +
 arch/riscv/boot/dts/tenstorrent/Makefile           |   2 +
 arch/riscv/boot/dts/tenstorrent/blackhole-card.dts |  14 +++
 arch/riscv/boot/dts/tenstorrent/blackhole.dtsi     | 108 +++++++++++++++++++++
 arch/riscv/configs/defconfig                       |   1 +
 12 files changed, 176 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/riscv/tenstorrent.yaml
 create mode 100644 arch/riscv/boot/dts/tenstorrent/Makefile
 create mode 100644 arch/riscv/boot/dts/tenstorrent/blackhole-card.dts
 create mode 100644 arch/riscv/boot/dts/tenstorrent/blackhole.dtsi