add a simple readme to introduce rockusb and tell people how to use it
Signed-off-by: Eddie Cai eddie.cai.linux@gmail.com --- doc/README.rockusb | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 doc/README.rockusb
diff --git a/doc/README.rockusb b/doc/README.rockusb new file mode 100644 index 0000000..13893d9 --- /dev/null +++ b/doc/README.rockusb @@ -0,0 +1,35 @@ +Rockusb (Rockchip USB protocol) +===================================================== + +Overview +-------- + +Rockusb protocol is widely used with Rockchip devices. +It can read/write info, image to/from devices. This +document briefly describes how to use Rockusb for upgrading +firmware (e.g. kernel, u-boot, rootfs, etc.). + +Tools +-------- +There are many tools can support Rockusb protocol. rkdeveloptool +is open source, It is maintained by Rockchip. + +Usage +-------- +The Usage of Rockusb command is +rockusb <USB_controller> [<devtype>] <devnum> +e.g. rockusb 0 mmc 0 +rockusb 0 usb 0 +On your U-Boot console, type this command to enter rockusb mode. +On your host PC. use lsusb command. you should see a usb device +using 0x2207 as its USB verdor id. Then use rkdeveloptool +sudo rkdeveloptool wl <BeginSec> <File> +to flash U-Boot image use command +sudo rkdeveloptool wl 64 <U-Boot binary> +There are plenty of Rockusb command. but wl(write lba) and +rd(reboot) command. These two command can let people flash +image to device. + +To do +----- +* Fully support Rockusb protocol