linux-kernel - Re: [PATCH v3 2/3] firmware: add exynos ACPM protocol driver

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Message-ID: <vxqi23hxw7bmtfs5wk3u7szganpv5aa74b26xrvpmbehkltodw@dpum7zrxdz44>
Date: Fri, 6 Dec 2024 14:28:11 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>, robh@...nel.org, 
	krzk+dt@...nel.org, conor+dt@...nel.org, alim.akhtar@...sung.com, 
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, andre.draszik@...aro.org, kernel-team@...roid.com, 
	willmcvicker@...gle.com, peter.griffin@...aro.org, javierm@...hat.com, 
	tzimmermann@...e.de, vincent.guittot@...aro.org, ulf.hansson@...aro.org, 
	arnd@...db.de
Subject: Re: [PATCH v3 2/3] firmware: add exynos ACPM protocol driver

On Fri, Dec 06, 2024 at 12:39:56AM +0100, Daniel Lezcano wrote:
> > +# SPDX-License-Identifier: GPL-2.0-only
> > +
> > +config EXYNOS_ACPM_PROTOCOL
> > +	tristate "Exynos Alive Clock and Power Manager (ACPM) Message Protocol"
> 
> Given the importance of this driver where a lot of PM services rely on, does
> it really make sense to allow it as a module ?
> 
> Some PM services may be needed very early in the boot process
> 

If it works as module e.g. on Android, it is beneficial. I think the
platform was booting fine without it, at least to some shell, so I can
imagine this can be loaded a bit later.

Best regards,
Krzysztof