> On 8 January 2012 16:02, Marek Vasut <marek.va...@gmail.com> wrote: > >> Can you point me to some documentation? I looked at > >> http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf?fsrch= > >> 1&s r=7 (i.MX28 Applications Processor Reference Manual) and although it > >> has a number of UARTs none of them looked obviously like PL011s. > > > > That's it, look at DUART section and Memory map section. > > That doesn't document that it implements the ID registers at all :-)
Well ... can't be helped. > Does the hardware give the ID registers the same values as stock > PL011 or are the part number/designer/etc fields different? Slightly different, but compatible with Linux: 80075fe0: 00000011 00000010 00000024 00000000 ........$....... 80075ff0: 0000000d 000000f0 00000005 000000b1 ................ > > Anyway, the right approach to this is going to be to have either > (a) a qdev device with a different name [this is how we handle > the pl061 variant in the Stellaris Luminary, for instance] > (b) qdev properties > so you can get the mx28 right. This seems more correct/extensible approach. M > > -- PMM
