usb, davinci: usb 2.0 problem on an am1808 based board

[Manjunathappa, Prakash]

Hi Sergei,

On Fri, May 18, 2012 at 16:57:41, Sergei Shtylyov wrote:
> Hello.
> 
> On 18-05-2012 14:07, Manjunathappa, Prakash wrote:
> 
> > I do not know how putting delay helped MSC device detection.
> > Can you please check if MUSB is coming up in "b_idle" state(by
> > $cat /sys/devices/platform/musb-da8xx/musb-hdrc/mode)?
> > State should move to b_peripheral on connecting gadget cable.
> > If you connect MSC device via mini-A connector, state should change to "a_host".
> > OTG timer is responsible for above state changes, can you please check if below
> > changes are present?
> > diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 4da7492..a1a692e 100644
> > --- a/drivers/usb/musb/da8xx.c
> > +++ b/drivers/usb/musb/da8xx.c
> > @@ -76,6 +76,7 @@
> >   #define DA8XX_INTR_TX_SHIFT    0
> >   #define DA8XX_INTR_TX_MASK     (DA8XX_USB_TX_EP_MASK<<  DA8XX_INTR_TX_SHIFT)
> >
> > +#define A_WAIT_BCON_TIMEOUT     1100            /* in ms */
> >   #define DA8XX_MENTOR_CORE_OFFSET 0x400
> >
> >   #define CFGCHIP2       IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG)
> > @@ -443,6 +444,7 @@ static int da8xx_musb_init(struct musb *musb)
> >                   rev, __raw_readl(CFGCHIP2),
> >                   musb_readb(reg_base, DA8XX_USB_CTRL_REG));
> >
> > +       musb->a_wait_bcon = A_WAIT_BCON_TIMEOUT;
> >          musb->isr = da8xx_musb_interrupt;
> >          return 0;
> >   fail:
> 
>     This change shouldn't be needed as musb->a_wait_bcon is set in 
> musb_core.c::allocate_instance().
> 

Yes, It worked even without above change.

Thanks,
Prakash