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From: Beleswar Padhi <b-padhi@ti.com>
To: <gregkh@linuxfoundation.org>, <rafael@kernel.org>,
	<dakr@kernel.org>, <johan@kernel.org>, <pavel@kernel.org>,
	<lenb@kernel.org>, <ulfh@kernel.org>
Cc: <sid9.karanam@gmail.com>, <afd@ti.com>, <nm@ti.com>,
	<vigneshr@ti.com>, <u-kumar1@ti.com>, <b-padhi@ti.com>,
	<driver-core@lists.linux.dev>, <linux-kernel@vger.kernel.org>,
	<linux-pm@vger.kernel.org>
Subject: [RFC PATCH 0/2] Allow platform drivers to skip PM domain power-on at probe
Date: Tue, 27 Oct 2026 19:37:49 +0530	[thread overview]
Message-ID: <20261027140751.2465743-1-b-padhi@ti.com> (raw)

Some devices must be configured before their PM domain is powered on,
but on DT based platforms platform_probe() always powers it on first.
This series lets a platform driver opt out.

The user will be the TI K3 DSP/M4 remoteproc drivers which need to put
those remote cores in reset before powering on the pmdomain. A patch has
been posted to add "power-domains" DT property to these devices[0] which
is the motivation of this series as well.

[0]: https://lore.kernel.org/all/8cb23b44-027d-4d81-b342-7eaca0248f63@ti.com/

Please provide your comments.

Thanks,
Beleswar

Beleswar Padhi (2):
  PM: domains: Honour PD_FLAG_ATTACH_POWER_ON for genpd
  driver core: platform: Allow drivers to skip PM domain power-on at
    probe

 drivers/base/platform.c         | 7 +++++--
 drivers/base/power/common.c     | 5 +++--
 drivers/pmdomain/core.c         | 5 +++--
 include/linux/platform_device.h | 8 ++++++++
 include/linux/pm_domain.h       | 4 ++--
 5 files changed, 21 insertions(+), 8 deletions(-)

-- 
2.34.1


             reply	other threads:[~2026-10-27 14:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-27 14:07 Beleswar Padhi [this message]
2026-10-27 14:07 ` [RFC PATCH 1/2] PM: domains: Honour PD_FLAG_ATTACH_POWER_ON for genpd Beleswar Padhi
2026-10-27 14:07 ` [RFC PATCH 2/2] driver core: platform: Allow drivers to skip PM domain power-on at probe Beleswar Padhi

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