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From: Pavel Machek <pavel@ucw.cz>
To: Johan Hovold <johan@kernel.org>
Cc: Rob Herring <robh@kernel.org>, Tony Lindgren <tony@atomide.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
	Lee Jones <lee.jones@linaro.org>, Jiri Slaby <jslaby@suse.cz>,
	Merlijn Wajer <merlijn@wizzup.org>,
	Peter Hurley <peter@hurleysoftware.com>,
	Sebastian Reichel <sre@kernel.org>,
	linux-serial@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org
Subject: Re: [PATCH 3/6] dt-bindings: serdev: ngsm: Add binding for GNSS child node
Date: Fri, 5 Mar 2021 11:46:35 +0100	[thread overview]
Message-ID: <20210305104635.GA16695@duo.ucw.cz> (raw)
In-Reply-To: <20200528095151.GE10358@localhost>

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Hi!

> > > For motorola modem case, we may have a GNSS device on channel 4.
> > > Let's add that to the binding and example.
> > > 
> > > Signed-off-by: Tony Lindgren <tony@atomide.com>
> > > ---
> > >  .../devicetree/bindings/serdev/serdev-ngsm.yaml          | 9 +++++++++
> > >  1 file changed, 9 insertions(+)

> 
> And since we're describing a mux, I think you need nodes for the virtual
> ports rather than a reg property in what should be a serial client. That
> is something like
> 
> 	serial@nnn {
> 		modem {
> 			compatible = "etsi,ts27001-mux";
> 
> 			serial@4 {
> 				compatible = "etsi,ts27001-serial";
> 				reg = <4>;
> 
> 				gnss {
> 					compatible = "motorola,motmdm-gnss";
> 				};
> 			};
> 		};
> 	};
> 
> This way you can actually use serdev for the client drivers (e.g. for
> gnss), and those drivers also be used for non-muxed ports if needed
> (e.g. over USB).

I have done changes you requested, and then hit "serdev is busy
because it can have at most one child" limit in the code. You have
pretty clean driver in your inbox, and no reply. No help with serdev
core limitations, either. Can you start to communicate?

Best regards,
								Pavel

-- 
http://www.livejournal.com/~pavelmachek

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  reply	other threads:[~2021-03-05 10:47 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-12 21:47 [PATCHv8 0/6] n_gsm serdev support and GNSS driver for droid4 Tony Lindgren
2020-05-12 21:47 ` [PATCH 1/6] tty: n_gsm: Add support for serdev drivers Tony Lindgren
2020-05-13 19:24   ` Pavel Machek
2020-05-28  9:31   ` Johan Hovold
2020-11-29 20:51     ` Pavel Machek
2020-05-12 21:47 ` [PATCH 2/6] dt-bindings: serdev: ngsm: Add binding for serdev-ngsm Tony Lindgren
2020-05-28  9:38   ` Johan Hovold
2020-05-12 21:47 ` [PATCH 3/6] dt-bindings: serdev: ngsm: Add binding for GNSS child node Tony Lindgren
2020-05-13 19:26   ` Pavel Machek
2020-05-27 19:28   ` Rob Herring
2020-05-28  9:51     ` Johan Hovold
2021-03-05 10:46       ` Pavel Machek [this message]
2021-03-05 10:52         ` Johan Hovold
2021-03-24  1:09           ` Pavel Machek
2021-04-01  9:43         ` Johan Hovold
2020-05-12 21:47 ` [PATCH 4/6] serdev: ngsm: Add generic serdev-ngsm driver Tony Lindgren
2020-05-28 12:43   ` Johan Hovold
2020-05-12 21:47 ` [PATCH 5/6] gnss: motmdm: Add support for Motorola Mapphone MDM6600 modem Tony Lindgren
2020-05-28 13:06   ` Johan Hovold
2020-05-28 23:38     ` Tony Lindgren
2020-05-12 21:47 ` [PATCH 6/6] ARM: dts: omap4-droid4: Configure modem for serdev-ngsm Tony Lindgren
2020-05-13 19:27   ` Pavel Machek
2020-05-13 19:09 ` [PATCHv8 0/6] n_gsm serdev support and GNSS driver for droid4 Pavel Machek
2020-05-14 17:31   ` Tony Lindgren
2020-05-22  9:17 ` Greg Kroah-Hartman
2020-05-25  7:44   ` Johan Hovold
2020-05-28  8:39 ` Johan Hovold
2020-05-28 12:57   ` Pavel Machek
2020-07-26  8:25   ` Pavel Machek
2020-07-28  8:36     ` Tony Lindgren
2020-12-16 22:56   ` Pavel Machek

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