net: Add MDIO bus driver for the Allwinner EMAC

This patch adds a separate driver for the MDIO interface of the
Allwinner ethernet controllers.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 1e11f2bfd9ce..3a316b30089f 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -144,6 +144,16 @@ config MDIO_OCTEON
 
           If in doubt, say Y.
 
+config MDIO_SUN4I
+        tristate "Allwinner sun4i MDIO interface support"
+        depends on ARCH_SUNXI
+        select REGULATOR
+        select REGULATOR_FIXED_VOLTAGE
+        help
+          This driver supports the MDIO interface found in the network
+          interface units of the Allwinner SoC that have an EMAC (A10,
+          A12, A10s, etc.)
+
 config MDIO_BUS_MUX
         tristate
         depends on OF_MDIO