From: Drew Fustini <fustini@kernel.org>
To: Tomasz Jeznach <tomasz.jeznach@linux.dev>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>
Cc: iommu@lists.linux.dev, linux-riscv@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Joel Stanley <joel@jms.id.au>,
Joerg Roedel <joerg.roedel@amd.com>,
Nicholas Piggin <npiggin@gmail.com>
Subject: Re: [PATCH v4] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU
Date: Mon, 25 May 2026 00:06:02 -0700 [thread overview]
Message-ID: <ahP02vU6WTN_etDb@gen8> (raw)
In-Reply-To: <20260521170652.1880662-2-fustini@kernel.org>
On Thu, May 21, 2026 at 10:06:33AM -0700, Drew Fustini wrote:
> From: Nicholas Piggin <npiggin@gmail.com>
>
> Extend the binding to cover details specific to the Tenstorrent RISC-V
> IOMMU. In particular, a second register range is added which contains
> M-privileged registers, e.g., PMAs and PMPs.
>
> The RISC-V spec S-privileged registers remain in the first register
> range and are compatible with "riscv,iommu" so the Linux driver does not
> notice any difference, but the binding will be used by OpenSBI and
> potentially other M-mode software.
>
> Reviewed-by: Joel Stanley <joel@jms.id.au>
> Acked-by: Joerg Roedel <joerg.roedel@amd.com>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> [fustini: fix dt_binding_check errors]
> Signed-off-by: Drew Fustini <fustini@kernel.org>
This has been applied to tenstorrent-dt-for-next.
https://git.kernel.org/pub/scm/linux/kernel/git/tenstorrent/linux.git/commit/?id=33583baeb1ba7d328e6a9775d889036900b74cdb
Drew
prev parent reply other threads:[~2026-05-25 7:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-21 17:06 [PATCH v4] dt-bindings: iommu: riscv: Add bindings for Tenstorrent RISC-V IOMMU Drew Fustini
2026-05-21 20:08 ` Conor Dooley
2026-05-25 7:06 ` Drew Fustini [this message]
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