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

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Message-Id: <50CC05D3-CCF5-44AA-9E8A-71DA8733B78E@collabora.com>
Date: Wed, 10 Sep 2025 11:43:54 -0300
From: Daniel Almeida <daniel.almeida@...labora.com>
To: Danilo Krummrich <dakr@...nel.org>
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 10 Sep 2025, at 11:04, Danilo Krummrich <dakr@...nel.org> wrote:
> 
> 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.


Fair enough, perhaps a quick v4 then?

— Daniel