From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>,
Boris Brezillon <boris.brezillon@collabora.com>,
Jassi Brar <jassisinghbrar@gmail.com>,
Chia-I Wu <olvaffe@gmail.com>, Chen-Yu Tsai <wenst@chromium.org>,
Steven Price <steven.price@arm.com>,
Liviu Dudau <liviu.dudau@arm.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>
Cc: kernel@collabora.com, dri-devel@lists.freedesktop.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
linux-hardening@vger.kernel.org, linux-pm@vger.kernel.org
Subject: Re: [PATCH v4 2/8] dt-bindings: power: Add MT8196 GPU frequency control binding
Date: Wed, 24 Sep 2025 13:30:41 +0200 [thread overview]
Message-ID: <4603e18e-e9c9-4f0e-9c0c-8cbad3567ea8@collabora.com> (raw)
In-Reply-To: <20250923-mt8196-gpufreq-v4-2-6cd63ade73d6@collabora.com>
Il 23/09/25 13:39, Nicolas Frattaroli ha scritto:
> On the MT8196 and MT6991 SoCs, the GPU power and frequency is controlled
> by some integration logic, referred to as "MFlexGraphics" by MediaTek,
> which comes in the form of an embedded controller running
> special-purpose firmware.
>
> This controller takes care of the regulators and PLL clock frequencies
> to squeeze the maximum amount of power out of the silicon.
>
> Add a binding which models it as a power domain.
>
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
> ---
> .../bindings/power/mediatek,mt8196-gpufreq.yaml | 117 +++++++++++++++++++++
> 1 file changed, 117 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/power/mediatek,mt8196-gpufreq.yaml b/Documentation/devicetree/bindings/power/mediatek,mt8196-gpufreq.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..03721244a737ce0914a89cc0aedd88fa3b6b2038
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/mediatek,mt8196-gpufreq.yaml
> @@ -0,0 +1,117 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/mediatek,mt8196-gpufreq.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek MFlexGraphics Power and Frequency Controller
> +
> +maintainers:
> + - Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
> +
> +description: |
This vertical bar is not needed. Please drop it.
Cheers,
Angelo
> + A special-purpose embedded MCU to control power and frequency of GPU devices
> + using MediaTek Flexible Graphics integration hardware.
> +
next prev parent reply other threads:[~2025-09-24 11:30 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 11:39 [PATCH v4 0/8] MT8196 GPU Frequency/Power Control Support Nicolas Frattaroli
2025-09-23 11:39 ` [PATCH v4 1/8] dt-bindings: gpu: mali-valhall-csf: add mediatek,mt8196-mali variant Nicolas Frattaroli
2025-09-23 11:39 ` [PATCH v4 2/8] dt-bindings: power: Add MT8196 GPU frequency control binding Nicolas Frattaroli
2025-09-24 11:30 ` AngeloGioacchino Del Regno [this message]
2025-09-23 11:39 ` [PATCH v4 3/8] dt-bindings: sram: Add compatible for mediatek,mt8196-gpufreq-sram Nicolas Frattaroli
2025-09-23 11:39 ` [PATCH v4 4/8] dt-bindings: mailbox: Add MT8196 GPUEB Mailbox Nicolas Frattaroli
2025-09-23 14:39 ` Rob Herring (Arm)
2025-09-23 11:39 ` [PATCH v4 5/8] mailbox: add MediaTek GPUEB IPI mailbox Nicolas Frattaroli
2025-09-24 11:35 ` AngeloGioacchino Del Regno
2025-09-23 11:39 ` [PATCH v4 6/8] drm/panthor: call into devfreq for current frequency Nicolas Frattaroli
2025-09-23 11:40 ` [PATCH v4 7/8] drm/panthor: Use existing OPP table if present Nicolas Frattaroli
2025-09-23 11:40 ` [PATCH v4 8/8] pmdomain: mediatek: Add support for MFlexGraphics Nicolas Frattaroli
2025-09-23 14:24 ` Ulf Hansson
2025-09-25 14:04 ` Nicolas Frattaroli
2025-09-29 9:58 ` Ulf Hansson
2025-09-23 16:25 ` AngeloGioacchino Del Regno
2025-09-24 19:11 ` Nicolas Frattaroli
2025-09-25 13:56 ` AngeloGioacchino Del Regno
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