Re: [PATCH v7 0/3] PCI: Add support for PCIe WAKE# interrupt

Chen-Yu Tsai
2026-02-24T08:13:46Z

On Wed, Feb 18, 2026 at 11:01:23AM +0100, Bartosz Golaszewski wrote:
> On Wed, Feb 18, 2026 at 9:12 AM Krishna Chaitanya Chundru
> <krishna.chundru@oss.qualcomm.com> wrote:
> >
> > PCIe WAKE# interrupt is needed for bringing back PCIe device state from
> > D3cold to D0.
> >
> > This is pending from long time, there was two attempts done previously to
> > add WAKE# support[1], [2]. Those series tried to add support for legacy
> > interrupts along with WAKE#. Legacy interrupts are already available in
> > the latest kernel and we can ignore them. For the wake IRQ the series is
> > trying to use interrupts property define in the device tree.
> >
> > This series is using gpio property instead of interrupts, from
> > gpio desc driver will allocate the dedicate IRQ.
> >
> > WAKE# is added in dts schema and merged based on this patch.
> > https://lore.kernel.org/all/20250515090517.3506772-1-krishna.chundru@oss.qualcomm.com/
> >
> > [1]: https://lore.kernel.org/all/b2b91240-95fe-145d-502c-d52225497a34@nvidia.com/T/
> > [2]: https://lore.kernel.org/all/20171226023646.17722-1-jeffy.chen@rock-chips.com/
> >
> > Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
> > ---
>
> This spans three subsystems, how do you want to get it upstream?

FWIW, I'm interested in using fwnode_gpiod_get() in the net subsystem
for the same reasons as the author. I could just use
fwnode_gpiod_get_index() and convert later though.

ChenYu

> Bartosz