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PXA USB OHCI: "usb stop" implementation.

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Some USB keys need to be switched off before loading the kernel
otherwise they can remain in an undefined status which prevents them
to be correctly recognized by the kernel.

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Markus Klotzbuecher <mk@denx.de>
This commit is contained in:
Rodolfo Giometti 2007-10-15 11:59:17 +02:00 • committed by Markus Klotzbuecher
parent d78791ae91
commit 85ac988e86
1 changed files with 16 additions and 0 deletions
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16
cpu/pxa/usb.c
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@ -89,6 +89,22 @@ int usb_cpu_stop(void)
int usb_cpu_init_fail(void)
{
UHCHR |= UHCHR_FHR;
udelay(11);
UHCHR &= ~UHCHR_FHR;
UHCCOMS |= 1;
udelay(10);
#if defined(CONFIG_CPU_MONAHANS)
UHCHR |= UHCHR_SSEP0;
#endif
#if defined(CONFIG_PXA27X)
UHCHR |= UHCHR_SSEP2;
#endif
UHCHR |= UHCHR_SSEP1;
UHCHR |= UHCHR_SSE;
return 0;
}