linux-kernel - Re: [PATCH V2 3/5] ARM: DT: tegra114:add aliases and DMA requestor for serial controller

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Message-ID: <20130310224219.GG4743@avionic-0098.mockup.avionic-design.de>
Date:	Sun, 10 Mar 2013 23:42:19 +0100
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	swarren@...dotorg.org, linux-arm-kernel@...ts.infradead.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
	pdeschrijver@...dia.com
Subject: Re: [PATCH V2 3/5] ARM: DT: tegra114:add aliases and DMA requestor
 for serial controller

On Sat, Mar 09, 2013 at 11:41:16PM +0530, Laxman Dewangan wrote:
[...]
> diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
[...]
> @@ -99,38 +106,50 @@
>  		       0x70003000 0x40c>;	/* Mux registers */
>  	};
>  
> -	serial@...06000 {
> +	/*
> +	 * There are two serial driver i.e. 8250 based simple serial
> +	 * driver and APB DMA based serial driver for higher baudrate
> +	 * and performace. To enable the 8250 based driver, the compatible
> +	 * is "nvidia,tegra114-uart", "nvidia,tegra20-uart" and to enable
> +	 * the APB DMA based serial driver, the comptible is
> +	 * "nvidia,tegra114-hsuart", "nvidia,tegra30-hsuart".
> +	 */
> +	uarta: serial@...06000 {

I'm not sure if this is a good place for this comment. Perhaps it should
go into the binding documentation?

Thierry

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