On Thu, Sep 2, 2010 at 9:44 PM, Prabhu Chawandi <prabhu.chava...@gmail.com> wrote: > Hi, > > I want to know how the HC is reset @ the boot of the kernel.
perhaps u can look here: http://www.mail-archive.com/u-b...@lists.denx.de/msg34219.html Searching the text for "HC reset" reveal its occurrence in several places. And the kernel's version of the same file, drivers/usb/host/ohci-hcd.c has some info too: /* HC Reset requires max 10 us delay */ ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus); val = 30; /* ... allow extra time */ while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) { if (--val == 0) { spin_unlock_irq (&ohci->lock); ohci_err (ohci, "USB HC reset timed out!\n"); return -1; } udelay (1); } > > Thanks & Reagrs, > Prabhu > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecar...@nl.linux.org > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
