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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Phil Reid <preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
Cc: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	pawel.moll-5wv7dgnIgG8@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
	galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
	peppe.cavallaro-qxv4g6HH51o@public.gmane.org,
	davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2 4/5] stmmac: Add ptp debugfs entry.
Date: Mon, 07 Dec 2015 15:37:20 +0100	[thread overview]
Message-ID: <3249879.RWnkoF3UVT@wuerfel> (raw)
In-Reply-To: <56658BB0.10700-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>

On Monday 07 December 2015 21:37:52 Phil Reid wrote:
> On 7/12/2015 5:03 PM, Arnd Bergmann wrote:
> > On Monday 07 December 2015 09:38:43 Phil Reid wrote:
> >> This adds a debugfs entry to view the current status of the ptp
> >> registers.
> >>
> >> Signed-off-by: Phil Reid <preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
> >>
> >
> > Your description should explain what this is good for. Why do you
> > need to look at this through debugfs?
> >
> 
> Happy to drop this one. I found it helpful when debugging the ptp
> behaviour. Allowing quick access to monitor the register updates
> by the ptp driver. Is there an alternative method that is preferred?

For tracing what the driver does, I'd add a trace event, which also
lets you see when any updates happen.

	Arnd
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  parent reply	other threads:[~2015-12-07 14:37 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-07  1:38 [PATCH v2 0/5] stmmac: Fixed Phy & PTP fixes Phil Reid
2015-12-07  1:38 ` [PATCH v2 1/5] stmmac: create of compatible mdio bus for stmacc driver Phil Reid
2015-12-07  1:38 ` [PATCH 1/1] stmmac: socfpga: Provide dt node to config ptp clk source Phil Reid
2015-12-07  4:04   ` David Miller
     [not found]   ` <1449452324-53858-3-git-send-email-preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2015-12-07 11:57     ` Sergei Shtylyov
2015-12-07  1:38 ` [PATCH v2 2/5] stmmac: Correct documentation on stmmac clocks Phil Reid
2015-12-07  1:38 ` [PATCH v2 3/5] stmmac: Fix calculations for ptp counters when clock input = 50Mhz Phil Reid
2015-12-07  1:38 ` [PATCH v2 4/5] stmmac: Add ptp debugfs entry Phil Reid
     [not found]   ` <1449452324-53858-6-git-send-email-preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2015-12-07  9:03     ` Arnd Bergmann
2015-12-07 13:37       ` Phil Reid
     [not found]         ` <56658BB0.10700-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2015-12-07 14:37           ` Arnd Bergmann [this message]
     [not found] ` <1449452324-53858-1-git-send-email-preid-qgqNFa1JUf/o2iN0hyhwsIdd74u8MsAO@public.gmane.org>
2015-12-07  1:38   ` [PATCH v2 5/5] stmmac: socfpga: Provide dt node to config ptp clk source Phil Reid
2015-12-07  9:05     ` Arnd Bergmann
2015-12-07 13:34       ` Phil Reid
2015-12-07 14:37         ` Arnd Bergmann
2015-12-07 11:59     ` Sergei Shtylyov
2015-12-07 13:31       ` Phil Reid

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