[PATCH v2 7/7] riscv: dts: tenstorrent: Add Atlantis platform

[Conor Dooley]

On Fri, Jun 05, 2026 at 12:09:53AM +0930, Joel Stanley wrote:
> Add initial support for the Tenstorrent Atlantis platform, based on the
> Atlantis SoC featuring 8x RVA23-compliant Tenstorrent Ascalon-XG cores.
> 
> The evb machine represents an internal bringup vehicle with just the
> interrupt controllers and a UART. This will be replaced in time with a
> full featured machine once details are available.
> 
> Co-developed-by: Drew Fustini <fustini at kernel.org>
> Signed-off-by: Drew Fustini <fustini at kernel.org>
> Signed-off-by: Joel Stanley <joel at jms.id.au>
> ---
> v2:
>  - Update mtimer compatible
>  - Add Drew's co-developed-by
>  - Correct aplic num-sources count
> ---
>  arch/riscv/boot/dts/tenstorrent/Makefile      |   1 +
>  .../boot/dts/tenstorrent/atlantis-evb.dts     |  33 ++
>  .../boot/dts/tenstorrent/atlantis-soc.dtsi    | 471 ++++++++++++++++++
>  3 files changed, 505 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/tenstorrent/atlantis-evb.dts
>  create mode 100644 arch/riscv/boot/dts/tenstorrent/atlantis-soc.dtsi
> 
> diff --git a/arch/riscv/boot/dts/tenstorrent/Makefile b/arch/riscv/boot/dts/tenstorrent/Makefile
> index 2c81faaba462..92d8bb1a683f 100644
> --- a/arch/riscv/boot/dts/tenstorrent/Makefile
> +++ b/arch/riscv/boot/dts/tenstorrent/Makefile
> @@ -1,2 +1,3 @@
>  # SPDX-License-Identifier: GPL-2.0
>  dtb-$(CONFIG_ARCH_TENSTORRENT) += blackhole-card.dtb
> +dtb-$(CONFIG_ARCH_TENSTORRENT) += atlantis-evb.dtb
> diff --git a/arch/riscv/boot/dts/tenstorrent/atlantis-evb.dts b/arch/riscv/boot/dts/tenstorrent/atlantis-evb.dts
> new file mode 100644
> index 000000000000..06259cca8357
> --- /dev/null
> +++ b/arch/riscv/boot/dts/tenstorrent/atlantis-evb.dts
> @@ -0,0 +1,33 @@
> +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> +/dts-v1/;
> +
> +#include "atlantis-soc.dtsi"
> +
> +/ {
> +	model = "Tenstorrent Atlantis development platform";
> +	compatible = "tenstorrent,atlantis-evb", "tenstorrent,atlantis";
> +
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	memory at 0 {
> +		device_type = "memory";
> +		reg = <0x0 0x00000000 0x0 0x80000000>,
> +		      <0x1 0x80000000 0x0 0x80000000>;
> +	};
> +
> +	aliases {
> +		serial0 = &uart1;
> +	};
> +
> +	chosen {
> +		bootargs = "earlycon console=ttyS0";

FYI, this should not be in here.

> +		stdout-path = "serial0";
> +	};
> +};
> +
> +&uart1 {
> +	/delete-property/ clocks;

Why are you doing this? Looks kinda suspect!

> +	clock-frequency = <5000000>;
> +	status = "okay";
> +};
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