Re: [PATCH] serial: 8250: omap: set out-of-band wakeup if wakeup pinctrl exists

[Kendall Willis]

On 1/16/26 07:16, Greg Kroah-Hartman wrote:
> On Tue, Dec 30, 2025 at 03:24:51PM -0600, Kendall Willis wrote:
> > In TI K3 SoCs, I/O daisy chaining is used to allow wakeup from UART when
> > the UART controller is off. Set UART device as wakeup capable using
> > out-of-band wakeup if the 'wakeup' pinctrl state exists and the device may
> > wakeup.
> >
> > Signed-off-by: Kendall Willis <k-willis@xxxxxx>
> > ---
> > Implementation
> > --------------
> > This patch is intended to be implemented along with the following
> > series. This patch has no dependencies on any of the other series:
> >
> > 1. "pmdomain: ti_sci: handle wakeup constraint for out-of-band wakeup":
> >     Skips setting constraints for wakeup sources that have out-of-band
> >     wakeup capability.
> >     https://github.com/kwillis01/linux/commits/v6.19/uart-daisy-chain/pmdomain
> >
> > 2. "serial: 8250: omap: set out-of-band wakeup if wakeup pinctrl exists"
> >     (this patch): Implements out-of-band wakeup from the UARTs for TI K3
> >     SoCs
> >     https://github.com/kwillis01/linux/tree/v6.19/uart-daisy-chain/uart-wakeup
> >
> > 3. "arm64: dts: ti: k3-am62: Support Main UART wakeup": Implements the
> >     functionality to wakeup the system from the Main UART
> >     https://github.com/kwillis01/linux/tree/b4/uart-daisy-chain-dts
>
> How am I to pull any of this into the mainline kernel tree?  If this is
> dependant on those out-of-tree stuff, there's no need for me to take
> this now, please submit this all together properly.

This patch has no dependencies on the listed series. I listed them so 
that there was a full picture of the feature implementation. The 
"pmdomain: ti_sci: handle wakeup constraint for out-of-band wakeup" 
patch has been merged already [1]. The "arm64: dts: ti: k3-am62: Support 
Main UART wakeup" series is posted [2] and has a dependency on this 
patch. Sorry for the confusion with the GitHub links, in the future I 
either won't add them or will add lore links instead.

[1] https://lore.kernel.org/all/20251230-pmdomain-v1-1-3a009d1ff72e@xxxxxx/
[2] 
https://lore.kernel.org/all/20260106-b4-uart-daisy-chain-dts-v3-0-398a66258f2c@xxxxxx/

Best,
Kendall Willis <k-willis@xxxxxx>

> thanks,
>
> greg k-h