colibri_imx6: fix video stdout in default environment

[oweals/u-boot.git] / doc / README.update

diff --git a/doc/README.update b/doc/README.update
index 48f03b7802fcf946561974648b0bba3d03355894..d37f2c4d4a575bc473e5a608d6c01bb2b54c35d0 100644 (file)
--- a/doc/README.update
+++ b/doc/README.update
@@ -51,6 +51,11 @@ the mkimage tool. dtc tool with support for binary includes, e.g. in version
 to be prepared. Refer to the doc/uImage.FIT/ directory for more details on FIT
 images.
 
+This mechanism can be also triggered by the command "fitupd".
+If an optional, non-zero address is provided as argument, the TFTP transfer
+is skipped and the image at this address is used.
+The fitupd command is enabled by CONFIG_CMD_FITUPD.
+
 
 Example .its files
 ------------------
@@ -88,3 +93,10 @@ Example .its files
   An example containing three updates. It can be used to update Linux kernel,
   ramdisk and FDT blob stored in Flash. The procedure for preparing the update
   file is similar to the example above.
+
+TFTP update via DFU
+-------------------
+
+- It is now possible to update firmware (bootloader, kernel, rootfs, etc.) via
+  TFTP by using DFU (Device Firmware Upgrade). More information can be found in
+  ./doc/README.dfutftp documentation entry.