linux-kernel - Re: [PATCH v3 1/3] tty: serial core: provide a method to search uart by phandle

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Date:	Fri, 16 Oct 2015 21:05:11 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	"H. Nikolaus Schaller" <hns@...delico.com>
Cc:	Jiri Slaby <jslaby@...e.cz>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Jonathan Corbet <corbet@....net>,
	Sergei Zviagintsev <sergei@...v.net>,
	Peter Hurley <peter@...leysoftware.com>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Sebastian Reichel <sre@...nel.org>,
	NeilBrown <neil@...wn.name>,
	Grant Likely <grant.likely@...aro.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-serial@...r.kernel.org, Marek Belisko <marek@...delico.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v3 1/3] tty: serial core: provide a method to search uart by phandle

On Friday 16 October 2015 20:08:33 H. Nikolaus Schaller wrote:
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/slaves.txt
> @@ -0,0 +1,16 @@
> +Device-Tree bindings for UART slave devices
> +
> +A node describing a slave device defines a phandle to reference the UART
> +the device is connected to. In the (unexpected) case of two or more UARTs
> +a list of phandles can be specified.
> +
> +properties:
> +       - uart: (list of) phandle(s) of UART(s) the device is connected to
> +
> +
> +example:
> +
> +       gps {
> +               compatible = "wi2wi,w2sg0004";
> +               uart = <&uart1>;
> +       };
> 


I would have expected the gps device here to be a child node of the
uart in DT. Can you explain why you chose differently?

	Arnd
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