On Wed, Sep 17, 2014 at 10:46:57AM +0400, Matwey V. Kornilov wrote: > 2014-09-16 22:39 GMT+04:00 Felipe Balbi <balbi@xxxxxx>: > > Hi, > > > > (man, talk about trimming... leave some context ;-) > > > > On Tue, Sep 16, 2014 at 10:06:33PM +0400, Matwey V. Kornilov wrote: > >> Ok. What is about musb_io.h? What does it mean "TUSB6010 doesn't allow > >> 8-bit access; 16-bit access is the minimum."? > > > > it means that readb() won't work. > > > >> I think __raw_readb is kind of return *(u8_t*)(addr), but this is CPU > >> stuff as far as I understand. > > > > tusb6010 is a discrete device connected through GPMC (general purpose > > memory controller). Basically, this tells you that tusb6010 cannot > > understand 8-bit accesses through gpmc. > > > > So, I checked the stuff in musb_io.h and it doesn't work properly for > my BBB. I don't know why. With this tusb6010-custom > musb_readb/musb_writeb functions I am not able to mount USB flash > drive (the device is being reset constantly, at the same time the > webcam works fine). With __raw functions, it is fine. > > Do you have an idea how this could be refactored? can't think of a solution off the top of my head. -- balbi
Attachment:
signature.asc
Description: Digital signature
