linux-kernel - Re: [PATCH] arm64: dts: allwinner: pine64: Add remaining UART aliases

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Message-ID: <20170418053522.ebkimevucq57y2km@lukather>
Date:   Tue, 18 Apr 2017 07:35:22 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Andreas Färber <afaerber@...e.de>
Cc:     linux-arm-kernel@...ts.infradead.org, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: allwinner: pine64: Add remaining UART aliases

On Fri, Apr 14, 2017 at 09:08:04PM +0200, Andreas Färber wrote:
> Enabling uart2 node currently leads to a /dev/ttyS1 device, with ttyS0..4
> always present, causing confusion on the user's part.
> 
> dtc cannot resolve an overlay's &uart2 reference for strings, only for
> phandles, so it would need to hardcode the full node path.
> 
> Avoid this and enforce reliable numbering by adding serialX aliases for:
> 
> UART1 - on Wifi/BT connector
> UART2 - on Pi-2 connector
> UART3 - on Euler connector
> UART4 - on Euler connector
> 
> Signed-off-by: Andreas Färber <afaerber@...e.de>

Applied, thanks

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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