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-rw-r--r--doc/README.fec_mxc9
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/README.fec_mxc b/doc/README.fec_mxc
index 72a1d595f5..30e05da574 100644
--- a/doc/README.fec_mxc
+++ b/doc/README.fec_mxc
@@ -1,7 +1,8 @@
U-boot config options used in fec_mxc.c
CONFIG_FEC_MXC
- Selects fec_mxc.c to be compiled into u-boot.
+ Selects fec_mxc.c to be compiled into u-boot. Can read out the
+ ethaddr from the SoC eFuses (see below).
CONFIG_MII
Must be defined if CONFIG_FEC_MXC is defined.
@@ -25,3 +26,9 @@ CONFIG_FEC_MXC_NO_ANEG
CONFIG_FEC_MXC_PHYADDR
Optional, selects the exact phy address that should be connected
and function fecmxc_initialize will try to initialize it.
+
+
+Reading the ethaddr from the SoC eFuses:
+if CONFIG_FEC_MXC is defined and the U-Boot environment does not contain the
+ethaddr variable, then its value gets read from the corresponding eFuses in
+the SoC. See the README files of the specific SoC for details.