MPC5XXX, Motion-PRO: Fix PHY initialization problem.

After being reset in mpc5xxx_fec_init_phy(), PHY goes into FX mode, in which
networking does not function. This commit switches PHY to TX mode by clearing
the FX_SEL bit of Mode Control Register. It also reverses commit
008861a2f3, i.e., a temporary workaround.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Acked-by: Bartlomiej Sieka <tur@semihalf.com>

board/motionpro/motionpro.c

@@ -28,7 +28,7 @@
 
 #include <common.h>
 #include <mpc5xxx.h>
-
+#include <miiphy.h>
 #if defined(CONFIG_OF_FLAT_TREE)
 #include <ft_build.h>
 #endif
@@ -82,6 +82,22 @@ int board_early_init_r(void)
 }
 
 
+/*
+ * Additional PHY intialization. After being reset in mpc5xxx_fec_init_phy(),
+ * PHY goes into FX mode.  To take it out of the FX mode and switch into
+ * desired TX operation, one needs to clear the FX_SEL bit of Mode Control
+ * Register.
+ */
+void reset_phy(void)
+{
+	unsigned short mode_control;
+
+	miiphy_read("FEC ETHERNET", CONFIG_PHY_ADDR, 0x15, &mode_control);
+	miiphy_write("FEC ETHERNET", CONFIG_PHY_ADDR, 0x15,
+			mode_control & 0xfffe);
+	return;
+}
+
 #ifndef CFG_RAMBOOT
 /*
  * Helper function to initialize SDRAM controller.