On Fri, Sep 28, 2012 at 02:23:32PM +0200, Maxime Ripard wrote: > Le 28/09/2012 14:08, Maxime Ripard a écrit : > > Hi everyone, > > > > I'm trying to write down some data to the /dev/ocotp file, which is > > basically a one time programming chip containing four bytes. > > > > Using the command mw -b -d /dev/ocotp 0-3 0x01020304 writes down only > > "4" to the first byte of the OCOTP, which is not quite what I was > > expecting. What's the correct syntax for the mw command? > > Ok, just found out, it should be > mw -l -d /dev/ocotp 0-3 0x01020304 Not quite. 0-3 is wrong, though appearantly happens to work. It should be: mw -d /dev/ocotp 0 0x01020304 (-l can be skipped, as 32bit accesses are default). If you want to write multiple words you can do a: mw -d /dev/ocotp 0 0xdeadbeef 0x12345678 0x11223344 The 0-3 notation is only for 'md' Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
