[U-Boot-Users] [PATCH] PXA USB OHCI: "usb stop" implementation.

[U-Boot-Users] [PATCH] PXA USB OHCI: "usb stop" implementation.

[Rodolfo Giometti]

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>
---
 cpu/pxa/usb.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/cpu/pxa/usb.c b/cpu/pxa/usb.c
index 65f457f..3c11d4d 100644
--- a/cpu/pxa/usb.c
+++ b/cpu/pxa/usb.c
@@ -67,6 +67,22 @@ int usb_cpu_init()
 
 int usb_cpu_stop()
 {
+	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;
 }
 
-- 
1.5.2.5


-- 

GNU/Linux Solutions                  e-mail:    giometti at enneenne.com
Linux Device Driver                             giometti at gnudd.com
Embedded Systems                     		giometti at linux.it
UNIX programming                     phone:     +39 349 2432127

[U-Boot-Users] [PATCH] PXA USB OHCI: "usb stop" implementation.

[Wolfgang Denk]

In message <20071015095916.GA19514@enneenne.com> you wrote:
> 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>

After discussing this with Markus (USB custodian) I merged this.

Thanks!

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
The amount of time between slipping on the peel and  landing  on  the
pavement is precisely 1 bananosecond.

[U-Boot-Users] [PATCH] PXA USB OHCI: "usb stop" implementation.

[Markus Klotzbücher]

Rodolfo Giometti <giometti@enneenne.com> writes:

> 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>

Thanks, added to USB custodian repo.

Best regards

Markus Klotzbuecher

--
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de