linux-kernel - Re: [PATCH v7 5/5] pmdomain: mediatek: Add support for MFlexGraphics

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Message-ID: <da324c96-2cba-46cf-af69-c9eaf7ea697f@collabora.com>
Date: Wed, 15 Oct 2025 10:59:22 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 Boris Brezillon <boris.brezillon@...labora.com>,
 Jassi Brar <jassisinghbrar@...il.com>, Chia-I Wu <olvaffe@...il.com>,
 Chen-Yu Tsai <wenst@...omium.org>, 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>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
 <matthias.bgg@...il.com>, Kees Cook <kees@...nel.org>,
 "Gustavo A. R. Silva" <gustavoars@...nel.org>,
 Ulf Hansson <ulf.hansson@...aro.org>
Cc: kernel@...labora.com, dri-devel@...ts.freedesktop.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org,
 linux-hardening@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v7 5/5] pmdomain: mediatek: Add support for MFlexGraphics

Il 15/10/25 10:50, Nicolas Frattaroli ha scritto:
> Various MediaTek SoCs use GPU integration silicon named "MFlexGraphics"
> by MediaTek. On the MT8196 and MT6991 SoCs, interacting with this
> integration silicon is required to power on the GPU.
> 
> This glue silicon is in the form of an embedded microcontroller running
> special-purpose firmware, which autonomously adjusts clocks and
> regulators.
> 
> Implement a driver, modelled as a pmdomain driver with a
> set_performance_state operation, to support these SoCs.
> 
> The driver also exposes the actual achieved clock rate, as read back
> from the MCU, as common clock framework clocks, by acting as a clock
> provider as well.
> 
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>