From: Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>
To: Florian Fainelli <f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Mathieu Olivari <mathieu-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
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mark.rutland-5wv7dgnIgG8@public.gmane.org,
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davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org,
gang.chen.5i5j-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
jiri-rHqAuBHg3fBzbRFIqnYvSA@public.gmane.org,
leitec-z4FmpzNVuK5Wk0Htik3J/w@public.gmane.org,
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juhosg-p3rKhJxN3npAfugRpC6u6w@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 3/7] net: dsa: ar8xxx: add regmap support
Date: Fri, 29 May 2015 04:23:29 +0200 [thread overview]
Message-ID: <20150529022329.GH11260@lunn.ch> (raw)
In-Reply-To: <5567C7B6.5060905-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
On Thu, May 28, 2015 at 06:58:14PM -0700, Florian Fainelli wrote:
> Le 05/28/15 18:42, Mathieu Olivari a écrit :
> > All switch registers can now be dumped using regmap/debugfs.
> >
> > \# cat /sys/kernel/debug/regmap/<mdiobus>/registers
> > 0000: 00001302
> > 0004: ...
> > ...
>
> ethtool has a register dump command, which should already be supported
> by the current code in net/dsa/slave.c, is there a particular reason why
> you use debugfs here instead?
Hi Florian
ethtool -d allows you to dump the registers for a port which has a
slave device. It is sometimes useful to dump the cpu ports registers,
or DSA ports, i.e. inter switch ports. Marvell devices also have two
sets of global registers, not specific to any port.
For my debugging, i have code which allows you to read the registers
via debugfs.
Andrew
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next prev parent reply other threads:[~2015-05-29 2:23 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-29 1:42 [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support Mathieu Olivari
[not found] ` <1432863742-18427-1-git-send-email-mathieu-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 1:42 ` [PATCH 1/7] net: dsa: add new driver for ar8xxx family Mathieu Olivari
[not found] ` <1432863742-18427-2-git-send-email-mathieu-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 2:08 ` Andrew Lunn
2015-06-01 8:14 ` Paul Bolle
2015-05-29 1:42 ` [PATCH 2/7] net: dsa: ar8xxx: add ethtool hw statistics support Mathieu Olivari
2015-05-29 1:42 ` [PATCH 5/7] net: dsa: ar8xxx: enable QCA header support on AR8xxx Mathieu Olivari
2015-05-29 1:42 ` [PATCH 3/7] net: dsa: ar8xxx: add regmap support Mathieu Olivari
2015-05-29 1:58 ` Florian Fainelli
[not found] ` <5567C7B6.5060905-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-29 2:23 ` Andrew Lunn [this message]
[not found] ` <20150529022329.GH11260-g2DYL2Zd6BY@public.gmane.org>
2015-05-29 2:36 ` Florian Fainelli
[not found] ` <5567D0BA.5020409-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-29 2:44 ` Andrew Lunn
[not found] ` <20150529024425.GI11260-g2DYL2Zd6BY@public.gmane.org>
2015-05-29 17:36 ` Mathieu Olivari
2015-05-29 17:59 ` Andrew Lunn
2015-05-30 22:38 ` Sergey Ryazanov
2015-05-29 1:42 ` [PATCH 4/7] net: dsa: add QCA tag support Mathieu Olivari
2015-05-29 1:42 ` [PATCH 6/7] net: dsa: ar8xxx: add support for second xMII interfaces through DT Mathieu Olivari
2015-05-29 1:42 ` [PATCH 7/7] Documentation: devicetree: add ar8xxx binding Mathieu Olivari
[not found] ` <1432863742-18427-8-git-send-email-mathieu-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 2:04 ` Florian Fainelli
2015-05-29 2:00 ` [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support Andrew Lunn
2015-05-29 18:49 ` [PATCH 0/7] net: dsa: add QCA AR8xxx switch family support\ Mathieu Olivari
[not found] ` <20150529184951.GA2458-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 18:59 ` Andrew Lunn
2015-05-29 19:58 ` Florian Fainelli
[not found] ` <5568C4D4.7010701-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-05-29 19:59 ` Mathieu Olivari
[not found] ` <20150529195955.GA2884-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2015-05-29 20:01 ` Andrew Lunn
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