diff options
| -rw-r--r-- | doc/README.fec_mxc | 9 | ||||
| -rw-r--r-- | doc/README.imx5 | 12 |
2 files changed, 20 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. diff --git a/doc/README.imx5 b/doc/README.imx5 index c5312b69d3..ea0e144ced 100644 --- a/doc/README.imx5 +++ b/doc/README.imx5 @@ -26,3 +26,15 @@ i.MX5x SoCs. 2.1 MAC Address: It is stored in the words 9 to 14 of fuse bank 1, using the natural MAC byte order (i.e. MSB first). + + This is an example how to program an example MAC address 01:23:45:67:89:ab + into the eFuses. Assure that the programming voltage is available and then + execute: + + => fuse prog -y 1 9 01 23 45 67 89 ab + + After programming a MAC address, consider locking the MAC fuses. This is + done by programming the MAC_ADDR_LOCK fuse, which is bit 4 of word 0 in + bank 1: + + => fuse prog -y 1 0 10 |