imx: Document fuse assignments for MAC addresses
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
diff --git a/doc/README.imx25 b/doc/README.imx25
new file mode 100644
index 0000000..0ca21b6
--- /dev/null
+++ b/doc/README.imx25
@@ -0,0 +1,10 @@
+U-Boot for Freescale i.MX25
+
+This file contains information for the port of U-Boot to the Freescale i.MX25
+SoC.
+
+1. CONVENTIONS FOR FUSE ASSIGNMENTS
+-----------------------------------
+
+1.1 MAC Address: It is stored in the words 26 to 31 of fuse bank 0, using the
+ natural MAC byte order (i.e. MSB first).
diff --git a/doc/README.imx27 b/doc/README.imx27
new file mode 100644
index 0000000..6f92cb4
--- /dev/null
+++ b/doc/README.imx27
@@ -0,0 +1,10 @@
+U-Boot for Freescale i.MX27
+
+This file contains information for the port of U-Boot to the Freescale i.MX27
+SoC.
+
+1. CONVENTIONS FOR FUSE ASSIGNMENTS
+-----------------------------------
+
+1.1 MAC Address: It is stored in the words 4 to 9 of fuse bank 0, using the
+ reversed MAC byte order (i.e. LSB first).
diff --git a/doc/README.imx5 b/doc/README.imx5
index e08941e..c5312b6 100644
--- a/doc/README.imx5
+++ b/doc/README.imx5
@@ -20,3 +20,9 @@
This option should be enabled for boards having a SYS_ON_OFF_CTL signal
connected to GPIO1[23] and triggering the MAIN_PWR_ON signal like in the
reference designs.
+
+2. CONVENTIONS FOR FUSE ASSIGNMENTS
+-----------------------------------
+
+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).
diff --git a/doc/README.imx6 b/doc/README.imx6
new file mode 100644
index 0000000..513a06e
--- /dev/null
+++ b/doc/README.imx6
@@ -0,0 +1,10 @@
+U-Boot for Freescale i.MX6
+
+This file contains information for the port of U-Boot to the Freescale i.MX6
+SoC.
+
+1. CONVENTIONS FOR FUSE ASSIGNMENTS
+-----------------------------------
+
+1.1 MAC Address: It is stored in fuse bank 4, with the 32 lsbs in word 2 and the
+ 16 msbs in word 3.