net/designware - switch driver to phylib usage

With this change driver will benefit from existing phylib and thus
custom phy functionality implemented in the driver will go away:
 * Instantiation of the driver is now much shorter - 2 parameters
instead of 4.
 * Simplified phy management/functoinality in driver is replaced with
rich functionality of phylib.
 * Support of custom phy initialization is now done with existing
"board_phy_config".

Note that after this change some previously used config options
(driver-specific PHY configuration) will be obsolete and they are simply
substituted with similar options of phylib.

For example:
 * CONFIG_DW_AUTONEG - no need in this one. Autonegotiation is enabled
by default.
 * CONFIG_DW_SEARCH_PHY - if one wants to specify attached phy
explicitly CONFIG_PHY_ADDR board config option has to be used, otherwise
automatically the first discovered on MDIO bus phy will be used

I believe there's no need now in "doc/README.designware_eth" because
user only needs to instantiate the driver with "designware_initialize"
whose prototype exists in "include/netdev.h".

Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Vipin Kumar <vipin.kumar@st.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Mischa Jonker <mjonker@synopsys.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Amit Virdi <amit.virdi@st.com>
Cc: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

1 files changed, 0 insertions, 25 deletions

diff --git a/doc/README.designware_eth b/doc/README.designware_eth
deleted file mode 100644
index 25ec6bd969..0000000000
--- a/doc/README.designware_eth
+++ /dev/null
@@ -1,25 +0,0 @@
-This driver supports Designware Ethernet Controller provided by Synopsis.
-
-The driver is enabled by CONFIG_DESIGNWARE_ETH.
-
-The driver has been developed and tested on SPEAr platforms. By default, the
-MDIO interface works at 100/Full. #defining the below options in board
-configuration file changes this behavior.
-
-Call an subroutine from respective board/.../board.c
-designware_initialize(u32 id, ulong base_addr, u32 phy_addr);
-
-The various options suported by the driver are
-1. CONFIG_DW_ALTDESCRIPTOR
-	Define this to use the Alternate/Enhanced Descriptor configurations.
-1. CONFIG_DW_AUTONEG
-	Define this to autonegotiate with the host before proceeding with mac
-	level configuration. This obviates the definitions of CONFIG_DW_SPEED10M
-	and CONFIG_DW_DUPLEXHALF.
-2. CONFIG_DW_SPEED10M
-	Define this to change the default behavior from 100Mbps to 10Mbps.
-3. CONFIG_DW_DUPLEXHALF
-	Define this to change the default behavior from Full Duplex to Half.
-4. CONFIG_DW_SEARCH_PHY
-	Define this to search the phy address. This would overwrite the value
-	passed as 3rd arg from designware_initialize routine.