Please ignore this patchset. V4 was missed in subject, I will add V4 and resend. Thanks, Peng. > Subject: [PATCH 0/5] pmdomain: core: Introduce > device_set_out_band_wakeup and use it in usb > > To i.MX95, USB2 and USB3 are in HSIOMIX domain, but there is always > on logic to make USB2 and USB3 has wakeup capability when HSIOMIX > power domain is in off state. So when in system-suspend state, > USB2/USB3 could wakeup the system even the USB2/USB3 HSIOMIX > power domain is turned off. This means USB2/USB3 has out-of-band > wakeup capability to wakeup system from suspended state. > > Without this patchset, if USB2/USB3 are configured with wakeup > enabled, the HSIOMIX power domain will not be turned off. This leads > to more power consumed in system suspend state. > > This patchset introduces device_set_out_band_wakeup and > device_out_band_wakeup two APIs to set out-of-band and query the > flag. > In genpd_finish_suspend, there is a check, if out-of-band is set, it will > continue to turn off the power domain. In genpd resume flow, there is > a similar check to turn on the power domain. > > Patch 1,2 introduces device_set_out_band_wakeup and > device_out_band_wakeup Patch 3 and 4 are drivers changes to use > device_out_band_wakeup > > More old discussions: > https://lore.kernel.org/linux-pm/20250311083239.3336439-1- > peng.fan@xxxxxxxxxxx/ > > This is pick up of [1] > This V2 patchset > - includes usb driver changes to give people a full picture on how it is > used. > - Rebased next-20250729 to resolve conflicts > > [1]https://lore.kernel.org/linux-pm/20250311083239.3336439-1- > peng.fan@xxxxxxxxxxx/ > > To: Rafael J. Wysocki <rafael@xxxxxxxxxx> > To: Pavel Machek <pavel@xxxxxxxxxx> > To: Len Brown <lenb@xxxxxxxxxx> > To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > To: Danilo Krummrich <dakr@xxxxxxxxxx> > To: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > To: Peter Chen <peter.chen@xxxxxxxxxx> > To: Shawn Guo <shawnguo@xxxxxxxxxx> > To: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> > To: Pengutronix Kernel Team <kernel@xxxxxxxxxxxxxx> > To: Fabio Estevam <festevam@xxxxxxxxx> > To: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx> > Cc: linux-pm@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Cc: linux-usb@xxxxxxxxxxxxxxx > Cc: imx@xxxxxxxxxxxxxxx > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> > > Changes in v4: > - Split device_set_out_band_wakeup API and pmdomain changes into > patch 1 > and 2 and clear the flag in device_prepare (from Ulf) > - Add R-b in patch 2 > - Move the call of device_set_out_band_wakeup to system suspend > callback in patch 3 and 4. (from Ulf) > - For patch 3,4, I still keep the Tags, since compared with V3, it is quite > small changes. > - Link to v3: https://lore.kernel.org/r/20250902-pm-v3-0- > ffadbb454cdc@xxxxxxx > > Changes in v3: > - Add a new patch from Xu Yang to detach power domain for ci hdrc > - Add A-b for patch 4 > - Link to v2: https://lore.kernel.org/r/20250801-pm-v2-0- > 97c8fb2a433c@xxxxxxx > > --- > Peng Fan (4): > PM: wakeup: Add out-of-band system wakeup support for devices > PM: domains: Allow power-off for out-of-band wakeup-capable > devices > usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95 > usb: dwc3: imx8mp: Set out of band wakeup for i.MX95 > > Xu Yang (1): > usb: chipidea: core: detach power domain for ci_hdrc platform > device > > drivers/base/power/main.c | 1 + > drivers/pmdomain/core.c | 6 ++++-- > drivers/usb/chipidea/ci_hdrc_imx.c | 11 ++++++++++- > drivers/usb/chipidea/core.c | 3 +++ > drivers/usb/dwc3/dwc3-imx8mp.c | 9 +++++++-- > include/linux/pm.h | 1 + > include/linux/pm_wakeup.h | 17 +++++++++++++++++ > include/linux/usb/chipidea.h | 1 + > 8 files changed, 44 insertions(+), 5 deletions(-) > --- > base-commit: 8f7f8b1b3f4c613dd886f53f768f82816b41eaa3 > change-id: 20250919-pm-v4-1879568de500 > > Best regards, > -- > Peng Fan <peng.fan@xxxxxxx>
