linux-kernel - Re: [PATCH v3 1/4] dt-bindings: cpufreq: Add mediatek,mt8196-cpufreq-hw binding

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Message-ID: <175312673842.1140849.10630028189155435330.robh@kernel.org>
Date: Mon, 21 Jul 2025 14:38:58 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>, kernel@...labora.com,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-kernel@...r.kernel.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-pm@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v3 1/4] dt-bindings: cpufreq: Add
 mediatek,mt8196-cpufreq-hw binding


On Wed, 16 Jul 2025 19:51:22 +0200, Nicolas Frattaroli wrote:
> The MediaTek MT8196 SoC has new cpufreq hardware, with added memory
> register ranges to control Dynamic-Voltage-Frequency-Scaling.
> 
> The DVFS hardware is controlled through a set of registers referred to
> as "FDVFS". They set the target frequency the DVFS hardware should aim
> for for each performance domain.
> 
> Instead of working around the old binding and its already established
> meanings for the reg items, add a new binding. The FDVFS register memory
> region is at the beginning, which allows us to easily expand this
> binding for future SoCs which may have more than 3 performance domains.
> 
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
> ---
>  .../cpufreq/mediatek,mt8196-cpufreq-hw.yaml        | 82 ++++++++++++++++++++++
>  1 file changed, 82 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>