linux-kernel - Re: [PATCH 5/9] arm64: dts: rockchip: Enable the NPU on quartzpro64

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Date: Thu, 13 Jun 2024 23:48:45 +0200
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Tomeu Vizoso <tomeu@...euvizoso.net>
Cc: Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>, 
	Robin Murphy <robin.murphy@....com>, Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Oded Gabbay <ogabbay@...nel.org>, Tomeu Vizoso <tomeu.vizoso@...euvizoso.net>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, Philipp Zabel <p.zabel@...gutronix.de>, 
	Sumit Semwal <sumit.semwal@...aro.org>, Christian König <christian.koenig@....com>, 
	iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org, linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH 5/9] arm64: dts: rockchip: Enable the NPU on quartzpro64

Hi,

On Wed, Jun 12, 2024 at 03:52:58PM GMT, Tomeu Vizoso wrote:
> Enable the nodes added in a previous commit to the rk3588s device tree.
> 
> Signed-off-by: Tomeu Vizoso <tomeu@...euvizoso.net>
> ---

There is a separate regulator for the NPU. For QuartzPro64, which is
basically the same as EVB1, it should look like this (obviously the
"npu-supply" and "sram-supply" need to become part of the binding):

&rknn {
	npu-supply = <&vdd_npu_s0>;
	sram-supply = <&vdd_npu_mem_s0>;
};

Also the references are supposed to be done alphabetically in the
DT file (so &rknn should not be added before &i2c).

Greetings,

-- Sebastian

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