linux-kernel - Re: [PATCH v3] rust: drm: Introduce the Tyr driver for Arm Mali GPUs

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Message-ID: <b44ca395-102e-4780-949d-9d656ba18ec0@kernel.org>
Date: Wed, 10 Sep 2025 16:04:35 +0200
From: Danilo Krummrich <dakr@...nel.org>
To: Daniel Almeida <daniel.almeida@...labora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>,
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>,
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
 Daniel Stone <daniels@...labora.com>, Rob Herring <robh@...nel.org>,
 Beata Michalska <beata.michalska@....com>,
 Carsten Haitzler <carsten.haitzler@...s.arm.com>,
 Boris Brezillon <boris.brezillon@...labora.com>,
 Ashley Smith <ashley.smith@...labora.com>,
 Steven Price <steven.price@....com>, Jeffrey Vander Stoep
 <jeffv@...gle.com>, Sumit Semwal <sumit.semwal@...aro.org>,
 Christian König <christian.koenig@....com>,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 rust-for-linux@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCH v3] rust: drm: Introduce the Tyr driver for Arm Mali GPUs

On 9/10/25 3:51 PM, Daniel Almeida wrote:
> diff --git a/drivers/gpu/drm/tyr/Kconfig b/drivers/gpu/drm/tyr/Kconfig
> new file mode 100644
> index 0000000000000000000000000000000000000000..de910b2cba3a48e0b238eb0f66279758c02dfb6f
> --- /dev/null
> +++ b/drivers/gpu/drm/tyr/Kconfig
> @@ -0,0 +1,17 @@
> +# SPDX-License-Identifier: GPL-2.0 or MIT
> +
> +config DRM_TYR
> +	tristate "Tyr (Rust DRM support for ARM Mali CSF-based GPUs)"
> +	depends on DRM=y
> +	depends on RUST
> +	depends on ARM || ARM64 || COMPILE_TEST
> +	depends on !GENERIC_ATOMIC64  # for IOMMU_IO_PGTABLE_LPAE

For the Nova drivers I did add

	default n

as long as the driver is work in progress.

> +	help
> +	  Rust DRM driver for ARM Mali CSF-based GPUs.
> +
> +	  This driver is for Mali (or Immortalis) Valhall Gxxx GPUs.
> +
> +	  Note that the Mali-G68 and Mali-G78, while Valhall architecture, will
> +	  be supported with the panfrost driver as they are not CSF GPUs.
> +
> +	  if M is selected, the module will be called tyr.

I also did add

	This driver is work in progress and may not be functional.

to make it clear what people will get.