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

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Message-ID: <2026011620-clause-gecko-2cb0@gregkh>
Date: Fri, 16 Jan 2026 14:16:59 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Kendall Willis <k-willis@...com>
Cc: Jiri Slaby <jirislaby@...nel.org>, d-gole@...com, vishalm@...com,
	sebin.francis@...com, msp@...libre.com, khilman@...libre.com,
	a-kaur@...com, s-kochidanadu@...com, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org
Subject: Re: [PATCH] serial: 8250: omap: set out-of-band wakeup if wakeup
 pinctrl exists

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@...com>
> ---
> 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.

thanks,

greg k-h