linux-kernel - [PATCH v2 0/3] pmdomain: core: Introduce device_set/get_out_band

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Message-Id: <20250801-pm-v2-0-97c8fb2a433c@nxp.com>
Date: Fri, 01 Aug 2025 12:34:21 +0800
From: Peng Fan <peng.fan@....com>
To: Ulf Hansson <ulf.hansson@...aro.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
 Pavel Machek <pavel@...nel.org>, Peter Chen <peter.chen@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>, 
 Vincent Guittot <vincent.guittot@...aro.org>, Xu Yang <xu.yang_2@....com>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-usb@...r.kernel.org, imx@...ts.linux.dev, arm-scmi@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, Peng Fan <peng.fan@....com>
Subject: [PATCH v2 0/3] pmdomain: core: Introduce
 device_set/get_out_band_wakeup

This is pick up of [1] which does not have response in about 5 months.
This V2 patchset
- includes usb driver changes(patch 2,3) to give people a full picture on how it is used.
- Rebased next-20250729 to resolve conflicts

To i.MX95, USB2 and USB3 are in HSIOMIX, but there is always on logic
to make USB2 and USB3 has wakeup capability when HSIOMIX power domain
is in off state. Otherwise the HSIOMIX will be kept on when
USB2 and USB3 are configured to be wakeup source and Linux suspended.
With this patchset, HSIOMIX could be powered off and Linux could still
be woke up by USB hotplug event.

Patch 1 introduces device_set/get_out_band_wakeup
Patch 2 and 3 are drivers changes to use device_set_out_band_wakeup

[1]https://lore.kernel.org/linux-pm/20250311083239.3336439-1-peng.fan@oss.nxp.com/

More old discussions:
https://lore.kernel.org/linux-pm/20250311083239.3336439-1-peng.fan@oss.nxp.com/

Signed-off-by: Peng Fan <peng.fan@....com>
---
Peng Fan (3):
      pmdomain: core: Introduce device_set/get_out_band_wakeup()
      usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95
      usb: dwc3: imx8mp: Set out of band wakeup for i.MX95

 drivers/pmdomain/core.c            |  6 ++++--
 drivers/usb/chipidea/ci_hdrc_imx.c |  8 ++++++++
 drivers/usb/dwc3/dwc3-imx8mp.c     |  4 ++++
 include/linux/pm.h                 |  1 +
 include/linux/pm_wakeup.h          | 17 +++++++++++++++++
 include/linux/usb/chipidea.h       |  1 +
 6 files changed, 35 insertions(+), 2 deletions(-)
---
base-commit: 54efec8782214652b331c50646013f8526570e8d
change-id: 20250729-pm-243ff7097e44

Best regards,
-- 
Peng Fan <peng.fan@....com>