linux-kernel - Re: [PATCH v2 04/10] arm64: dts: imx8mn: Add access-controller references

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Message-ID: <20250207120213.GD14860@localhost.localdomain>
Date: Fri, 7 Feb 2025 20:02:13 +0800
From: Peng Fan <peng.fan@....nxp.com>
To: Alexander Stein <alexander.stein@...tq-group.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 04/10] arm64: dts: imx8mn: Add access-controller
 references

On Fri, Feb 07, 2025 at 09:36:09AM +0100, Alexander Stein wrote:
>Mark ocotp as a access-controller and add references on peripherals
>which can be disabled (fused).

I am not sure whether gpcv2 changes should be included in this patchset
or not. Just add access-controller for fused IP will not work.

i.MX8M BLK-CTRL/GPC will hang if the related power domain is still touched
by kernel. The pgc can't power up/down because clock is gated. 

This comment also apply to i.MX8MM/P.

Regards
Peng