[U-Boot] davinci, dm365, usb: timeoutvalue

[Heiko Schocher]

Hello Thomas,

I just debugging some usb issues on an dm365 based board. I noticed
that if no usb device is connected to the board, the "usb start"
command does have a long timeout (also have access to an dm365evm
board, same behaviour). Found the reason for this big timeout here:

./drivers/usb/musb/musb_hcd.c usb_lowlevel_init():
	timeout = musb_cfg.timeout;
        while (timeout--)
                if (readb(&musbr->devctl) & MUSB_DEVCTL_HM)
                        break;


with ./drivers/usb/musb/davinci.:
/* MUSB platform configuration */
struct musb_config musb_cfg = {
        .regs           = (struct musb_regs *)MENTOR_USB0_BASE,
        .timeout        = DAVINCI_USB_TIMEOUT,
        .musb_speed     = 0,
};

and ./drivers/usb/musb/davinci.h:

#define DAVINCI_USB_TIMEOUT 0x3FFFFFF

Why is this DAVINCI_USB_TIMEOUT value so high? This could be shorter,
or are there some reasons for such a long timeout?

Thanks!

bye,
Heiko
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