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? -- With best regards, Matwey V. Kornilov http://blog.matwey.name xmpp://0x2207@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
