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From: Kevin Hilman <khilman@baylibre.com>
To: "shunzhou.jiang@amlogic.com" <shunzhou.jiang@amlogic.com>,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-amlogic <linux-amlogic@lists.infradead.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>,
	jbrunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	"jianxin.pan" <jianxin.pan@amlogic.com>
Subject: Re: Re: [PATCH 2/2] soc: s4: Add support for power domains controller
Date: Fri, 11 Feb 2022 10:52:41 -0800	[thread overview]
Message-ID: <7hwni1me12.fsf@baylibre.com> (raw)
In-Reply-To: <2022021117375354230910@amlogic.com>

Hi Shunzhou,

"shunzhou.jiang@amlogic.com" <shunzhou.jiang@amlogic.com> writes:

> Hi Kevin:
> Thanks your kindly reply

You're welcome.  For future reference, please avoid top-posting.  See:
https://www.kernel.org/doc/html/latest/process/2.Process.html?highlight=top-posting#mailing-lists

> For those domains,  default is active, we hope not close when in use or not in use, in our case, 
> only runtime PM (include suspend) control this, so set always on flag to avoid domain shutdown,

my question remains: why do want to keep these powered on even when they
are not in use?

The goal of the power-domain framework + runtime PM is to be able to
save power by turnin off power domains when they are not in use.

> if you also have concern, we can control this not in kernel, but this not our expect.

My strong preference is that this is controlled by the kernel.

Kevin

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  parent reply	other threads:[~2022-02-11 18:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-26  6:10 [PATCH 0/2] Power: meson-s4: add s4 power domain driver Shunzhou Jiang
2022-01-26  6:10 ` [PATCH 1/2] dt-bindings: power: add Amlogic s4 power domains bindings Shunzhou Jiang
2022-01-26  6:10 ` [PATCH 2/2] soc: s4: Add support for power domains controller Shunzhou Jiang
2022-02-01 19:52   ` Kevin Hilman
     [not found]     ` <202202091001287547451@amlogic.com>
2022-02-09 20:30       ` Kevin Hilman
     [not found]         ` <2022021117375354230910@amlogic.com>
2022-02-11 18:52           ` Kevin Hilman [this message]
     [not found]             ` <2022021510112070486315@amlogic.com>
2022-02-19  0:32               ` Kevin Hilman

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