Commit 89ce376c6bdc (drivers/net: Use of_match_ptr() macro in smc91x.c)
added minimal device tree support to smc91x, but it's not working on
many platforms because of the lack of some key configuration bits.

Fix the issue by parsing the necessary configuration like the
smc911x driver is doing.

Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

If this looks OK, I'd like to merge this as a fix via arm-soc tree
along with the other patches in this series as my later patches
depend on patches in this series.

---
 .../devicetree/bindings/net/smsc-lan91c111.txt     |  4 ++
 drivers/net/ethernet/smsc/smc91x.c                 | 52 +++++++++++++++++-----
 2 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/smsc-lan91c111.txt b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt
index 953049b..53d69e3 100644
--- a/Documentation/devicetree/bindings/net/smsc-lan91c111.txt
+++ b/Documentation/devicetree/bindings/net/smsc-lan91c111.txt

@@ -8,3 +8,7 @@ Required properties:
 Optional properties:
 - phy-device : phandle to Ethernet phy
 - local-mac-address : Ethernet mac address to use
+- reg-io-width : Specify the size (in bytes) of the IO accesses that
+  should be performed on the device.  Valid value for SMSC LAN is
+  1, 2 or 4.  If it's omitted or invalid, the size would be 2.