netdev - Re: [PATCH] powerpc/83xx: gianfar_ptp: select 1588 clock source through dts file

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Date:	Tue, 24 Sep 2013 19:14:10 +0200
From:	Richard Cochran <richardcochran@...il.com>
To:	Aida Mynzhasova <aida.mynzhasova@...tlab.ru>
Cc:	linuxppc-dev@...ts.ozlabs.org, devicetree@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] powerpc/83xx: gianfar_ptp: select 1588 clock source
 through dts file

On Tue, Sep 24, 2013 at 11:39:57AM +0400, Aida Mynzhasova wrote:
> Currently IEEE 1588 timer reference clock source is determined through
> hard-coded value in gianfar_ptp driver. This patch allows to select ptp
> clock source by means of device tree file node.
> 
> For instance:
> 
> 	fsl,cksel = <0>;
> 
> for using external (TSEC_TMR_CLK input) high precision timer
> reference clock.
> 
> Other acceptable values:
> 
> 	<1> : eTSEC system clock
> 	<2> : eTSEC1 transmit clock
> 	<3> : RTC clock input

I think it would be useful to have this table in the binding document
as well.

Thanks,
Richard
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