[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231003122137.GC34982@atomide.com>
Date: Tue, 3 Oct 2023 15:21:37 +0300
From: Tony Lindgren <tony@...mide.com>
To: Maximilian Luz <luzmaximilian@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Andy Shevchenko <andriy.shevchenko@...el.com>,
Dhruva Gole <d-gole@...com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
John Ogness <john.ogness@...utronix.de>,
Johan Hovold <johan@...nel.org>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Vignesh Raghavendra <vigneshr@...com>,
linux-omap@...r.kernel.org,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH v12 1/1] serial: core: Start managing serial controllers
to enable runtime PM
* Tony Lindgren <tony@...mide.com> [231003 12:15]:
> Hi,
>
> * Maximilian Luz <luzmaximilian@...il.com> [231003 11:57]:
> > A bad workaround is to disable runtime PM, e.g. via
> >
> > echo on > /sys/bus/serial-base/devices/dw-apb-uart.4:0/dw-apb-uart.4:0.0/power/control
>
> If the touchscreen controller driver(s) are using serdev they are
> children of the dw-apb-uart.4:0.0 and can use runtime PM calls to
> block the parent device from idling as necessary. The hierarchy
> unless changed using ignore_children.
Sorry about all the typos, I meant "the hierarchy works unless changed"
above. The rest of the typos are easier to decipher probably :)
Regards,
Tony
Powered by blists - more mailing lists