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Date: Thu, 9 Oct 2014 07:11:23 +0000 From: "luwei.zhou@...escale.com" <luwei.zhou@...escale.com> To: Richard Cochran <richardcochran@...il.com> CC: "davem@...emloft.net" <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "shawn.guo@...aro.org" <shawn.guo@...aro.org>, "bhutchings@...arflare.com" <bhutchings@...arflare.com>, "Fabio.Estevam@...escale.com" <Fabio.Estevam@...escale.com>, "fugang.duan@...escale.com" <fugang.duan@...escale.com>, "Frank.Li@...escale.com" <Frank.Li@...escale.com>, "stephen@...workplumber.org" <stephen@...workplumber.org> Subject: RE: [PATCH v1 4/4] ARM: Documentation: Update fec dts binding doc On Thu, Oct 09, 2014 at 02:53:00PM +8000, Richard Cochran wrote: > -----Original Message----- > From: Richard Cochran [mailto:richardcochran@...il.com] > Sent: Thursday, October 09, 2014 2:53 PM > To: Zhou Luwei-B45643 > Cc: davem@...emloft.net; netdev@...r.kernel.org; shawn.guo@...aro.org; > bhutchings@...arflare.com; Estevam Fabio-R49496; Duan Fugang-B38611; Li > Frank-B20596; stephen@...workplumber.org > Subject: Re: [PATCH v1 4/4] ARM: Documentation: Update fec dts binding > doc > > On Thu, Oct 09, 2014 at 02:19:07AM +0000, luwei.zhou@...escale.com wrote: > > Since there are 4 channels in the PTP timer IP and none of 4 channels > > Is now used by now. We can use hardcode to define the default PPS > > output channel not DT such as "#define PPS_COUTPUT_CHANNEL > FEC_TIMER_CHANNEL0". > > I prefer this to a random new DT property, but how can you be sure that > nothing else in the kernel is using FEC_TIMER_CHANNELx? > > Thanks, > Richard The channel related registers in PTP timers are not defined in the Ethernet driver. Current Code just use ptp timer timestamp function to support linux ptp. So I conclude that we can Choose one channel as default. Thanks Luwei -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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