While the AR9331 has a gigabit MAC towards the internal switch, the
integrated PHYs however are only 100-base-tx capable. The existing code
however advertieses gigabit capability in the link status word. If you
attach such a PHY to a gigabit capable switch on the remote end, with
some probability it attempts to negotiate gigabit and fails, falling
baco to the AR9331 assuming a 10mbit half-duplex link. This has been
observed quite frequently with the Carambola2 and gigabit capable
switches.
In ath79_register_eth(), "pdata->has_gbit = 1;" is set unconditionally
for both AR9331 ethernet ports. This is most likely wrong. Despite the
two MAC IP cores being gigabit MACs, the MAC for eth1 is connected to a
100base-T PHY via MII. The has_gbit attribute is used in the ethernet
driver to determine the supported link modes.
So either pdata->has_gbit is not set to 1 anymore, or the ethernet
driver needs to be modified to determine the advertised link code word
on another criteria than pdata->has_gbit. This patch implements the
former solution.
Signed-off-by: Harald Welte <laforge@gnumonks.org>
SVN-Revision: 42432
I don't have access to the specs, so I'm not sure about every detail, but I
haven't seen any problems with my test system, a TL-WR841N v9. It looks pretty
much like a QCA955x without PCI, a little twist in the clock calculation and
a AR9331-compatible switch.
Features not yet supported:
* EHCI (my test system doesn't have USB)
* ? (I have no idea if the QCA953x has any other features I don't know about
that aren't used by the TL-WR841N v9)
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
SVN-Revision: 40399
The hardware supports large ethernet frames. Override
the maximum frame length and packet lenght mask in the
platform data to allow to use large MTU on the ethernet
interfaces.
Limit the feature to AR934x SoCs for now. It should work
on some other SoCs as well, but those has not been tested
yet.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 39149
This enables us to modify the ag71xx_mdio_platform_data from within the
board support files.
Signed-off-by: Felix Kaechele <heffer@fedoraproject.org>
Patchwork: http://patchwork.openwrt.org/patch/4613/
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 39126
Rename the function and extend it in order to make it
usable from board setup code.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 38085
