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From: Lee Jones <lee@kernel.org>
To: "Otto Pflüger" <otto.pflueger@abscue.de>
Cc: Orson Zhai <orsonzhai@gmail.com>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	Sebastian Reichel <sre@kernel.org>, Rob Herring <robh@kernel.org>,
	linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
	linux-pm@vger.kernel.org
Subject: Re: [PATCH v2 1/3] mfd: sprd-sc27xx: Integrate power off and reboot support
Date: Wed, 26 Nov 2025 15:36:19 +0000	[thread overview]
Message-ID: <20251126153619.GH3070764@google.com> (raw)
In-Reply-To: <aSNFk7tZqcgBqYsI@abscue.de>

On Sun, 23 Nov 2025, Otto Pflüger wrote:

> On Thu, Nov 20, 2025 at 03:30:24PM +0000, Lee Jones wrote:
> > On Mon, 10 Nov 2025, Otto Pflüger wrote:
> > 
> > > The SC27xx PMICs allow restarting and powering off the device. Since
> > > this functionality is rather simple and not configurable in any way,
> > > make it part of the main PMIC driver.
> > 
> > This sounds like more of a drivers/power thing.
> 
> This was originally in drivers/power, but according to [1], it should
> not be a separate device tree node. Using a separate driver without a
> separate device tree node would still involve some code here that
> instantiates a platform device and selects the right platform data for
> it.
> 
> Registering the poweroff handler directly seemed less complex, and I
> assumed it was okay since some other MFD drivers (e.g. rk8xx) also
> implement the same functionality without a separate power driver.
> 
> Is it a good idea to use devm_mfd_add_devices here instead?
> 
> [1]: https://lore.kernel.org/all/20251002025344.GA2958334-robh@kernel.org/

Well that is quite the predicament.

Let me catch-up with Rob out-of-band and see if we can come up with a
solution.

-- 
Lee Jones [李琼斯]

  reply	other threads:[~2025-11-26 15:36 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-10 19:08 [PATCH v2 0/3] mfd: sprd-sc27xx: Move poweroff/reboot support to the parent MFD driver Otto Pflüger
2025-11-10 19:08 ` [PATCH v2 1/3] mfd: sprd-sc27xx: Integrate power off and reboot support Otto Pflüger
2025-11-20 15:30   ` Lee Jones
2025-11-23 17:34     ` Otto Pflüger
2025-11-26 15:36       ` Lee Jones [this message]
2025-11-10 19:08 ` [PATCH v2 2/3] spi: sprd-adi: Remove code for storing the reboot mode Otto Pflüger
2025-11-10 19:09 ` [PATCH v2 3/3] power: reset: sc27xx: Drop unused driver Otto Pflüger
2025-11-19  6:33 ` [PATCH v2 0/3] mfd: sprd-sc27xx: Move poweroff/reboot support to the parent MFD driver Baolin Wang
2025-11-21  2:29   ` Cixi Geng

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