linux-kernel - Re: [RFC PATCH 3/5] dt-bindings: gpu: Add protected heap name to Mali Valhall CSF binding

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Message-ID: <7234f25c-a2aa-4834-931b-aeeb7a49dfa7@kernel.org>
Date: Thu, 30 Jan 2025 14:25:16 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Florent Tomasin <florent.tomasin@....com>, Vinod Koul <vkoul@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Boris Brezillon <boris.brezillon@...labora.com>,
 Steven Price <steven.price@....com>, Liviu Dudau <liviu.dudau@....com>,
 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>,
 Sumit Semwal <sumit.semwal@...aro.org>,
 Benjamin Gaignard <benjamin.gaignard@...labora.com>,
 Brian Starkey <Brian.Starkey@....com>, John Stultz <jstultz@...gle.com>,
 "T . J . Mercier" <tjmercier@...gle.com>,
 Christian König <christian.koenig@....com>,
 Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Yong Wu <yong.wu@...iatek.com>
Cc: dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linux-media@...r.kernel.org, linaro-mm-sig@...ts.linaro.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 nd@....com, Akash Goel <akash.goel@....com>
Subject: Re: [RFC PATCH 3/5] dt-bindings: gpu: Add protected heap name to Mali
 Valhall CSF binding

On 30/01/2025 14:08, Florent Tomasin wrote:
> Allow mali-valhall-csf driver to retrieve a protected
> heap at probe time by passing the name of the heap
> as attribute to the device tree GPU node.

Please wrap commit message according to Linux coding style / submission
process (neither too early nor over the limit):
https://elixir.bootlin.com/linux/v6.4-rc1/source/Documentation/process/submitting-patches.rst#L597

Why this cannot be passed by phandle, just like all reserved regions?

>From where do you take these protected heaps? Firmware? This would
explain why no relation is here (no probe ordering, no device links,
nothing connecting separate devices).

Best regards,
Krzysztof