On Thu, May 28, 2015 at 06:58:14PM -0700, Florian Fainelli wrote:

Le 05/28/15 18:42, Mathieu Olivari a écrit :

quoted

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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