linux-kernel - Re: [PATCH 0/3] arm64: dts: rockchip: Enable the NPU on some rk3588 boards

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Message-ID: <CALWfF7KHyKmDcEL9=mYzfCRWc_cymNscoFdeXr8P2frJeww5vA@mail.gmail.com>
Date: Tue, 30 Dec 2025 20:58:28 -0600
From: Jimmy Hon <honyuenkwun@...il.com>
To: ricardo@...dini.net
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, devicetree@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, nicolas.frattaroli@...labora.com
Subject: Re: [PATCH 0/3] arm64: dts: rockchip: Enable the NPU on some rk3588 boards

On Tue, Dec 30, 2025 at 2:20 PM Ricardo Pardini via B4 Relay
<devnull+ricardo.pardini.net@...nel.org> wrote:
>
> This series enables the NPU on a few Rockchip rk3588 boards.
> In every case here, the required regulator was already described.
Now that the pd_npu has defined the dependency to the vdd_npu_s0,
shouldn't the regulator-always-on be removed from the regulator? When
the Rock5B enabled the NPU, it didn't define the regulator with always
on. [1]

More specifically, the commit message for the introduction of the
pd_npu label mentions how the regulator no longer needs to be always
on. [2]

[1] https://lore.kernel.org/linux-rockchip/20250721-6-10-rocket-v9-10-77ebd484941e@tomeuvizoso.net/
[2] https://lore.kernel.org/linux-rockchip/20250721-6-10-rocket-v9-7-77ebd484941e@tomeuvizoso.net/

Jimmy

>
> Signed-off-by: Ricardo Pardini <ricardo@...dini.net>
> ---
> Ricardo Pardini (3):
>       arm64: dts: rockchip: Enable the NPU on NanoPC T6/T6-LTS
>       arm64: dts: rockchip: Enable the NPU on FriendlyElec CM3588
>       arm64: dts: rockchip: Enable the NPU on Turing RK1
>
>  .../dts/rockchip/rk3588-friendlyelec-cm3588.dtsi   | 34 +++++++++++++++++++++
>  arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6.dtsi | 35 ++++++++++++++++++++++
>  .../arm64/boot/dts/rockchip/rk3588-turing-rk1.dtsi | 34 +++++++++++++++++++++
>  3 files changed, 103 insertions(+)
> ---
> base-commit: 9448598b22c50c8a5bb77a9103e2d49f134c9578
> change-id: 20251230-arm64-dts-rockchip-rk3588-npu-enablements-1e2830d2e7b0
>
> Best regards,
> --
> Ricardo Pardini <ricardo@...dini.net>
>
>
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip

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