X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=doc%2FREADME.fec_mxc;h=9ca6ac2fb59d13253af6fdd742e3b36a508d0a39;hb=85ab0452fefc8c48b0b4f35200cb2590b4693ab3;hp=ed7e47d728581a3691654b5b7e6f20cad3fa96fb;hpb=9ef2835f26652092a61b0cb0551ef4f36be27946;p=u-boot

diff --git a/doc/README.fec_mxc b/doc/README.fec_mxc
index ed7e47d728..9ca6ac2fb5 100644
--- a/doc/README.fec_mxc
+++ b/doc/README.fec_mxc
@@ -27,6 +27,11 @@ CONFIG_FEC_MXC_PHYADDR
 	Optional, selects the exact phy address that should be connected
 	and function fecmxc_initialize will try to initialize it.
 
+CONFIG_FEC_FIXED_SPEED
+	Optional, selects a fixed speed on the MAC interface without asking some
+	phy. This is usefull if there is a direct MAC <-> MAC connection, for
+	example if the CPU is connected directly via the RGMII interface to a
+	ethernet-switch.
 
 Reading the ethaddr from the SoC eFuses:
 if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the