From: thomas.abraham@linaro.org (Thomas Abraham)
To: linux-arm-kernel@lists.infradead.org
Subject: USB host on s3c2416
Date: Mon, 22 Aug 2011 15:35:13 +0530 [thread overview]
Message-ID: <CAJuYYwS9s1i6MEE3-37AkWOCGnOkmJCSdW5OFT2EjQfE7Ern_w@mail.gmail.com> (raw)
In-Reply-To: <loom.20110822T110123-860@post.gmane.org>
Hi Gigin,
On 22 August 2011 14:47, GIGIN JOSE <gigin_jose@yahoo.co.in> wrote:
> Hi,
>
> I am working on samsung s3c2416 ARM based Soc on
> linux 2.6.21 kernel. By default, the Soc has one
> USB host and one USB device/host. My USB host is
> working fine. Since I need to use two USB host on my system,
> ?I need to enable the USB device/host as a USB host.
s3c2416 includes a USB 1.1 Host and USB 2.0 device controller. So
there is no second usb host controller on s3c2416.
Regards,
Thomas.
>
> The following are the changes I have made for the same:
>
> Register ?Address ? ? ? ?value
> -----------------------------
> PHYPWR ? ?0x4C00_0084 ? ?0x0
> PWRCFG ? ?0x4C00_0060 ? ?(1<<4)
> URSTCON ? 0x4C00_0088 ? ?(0<<2)|(1<<1)|(1<<0)
> URSTCON ? 0x4C00_0088 ? ?(0<<2)|(0<<1)|(0<<0)
> PHYCTRL ? 0x4C00_0080 ? ?(0<<3)|(0<<2)|(1<<1)|(1<<0)
> UCLKCON ? 0x4C00_008C ? ?0<<31)|(0<<2)|(1<<1)|(1<<0)
>
> Once I try to plug in a ?USB mass storage device (whose driver is present in
> kernel), I get the following error:
>
> usb 1-2: new full speed USB device using s3c2410-ohci and address 10
> usb 1-2: device descriptor read/64, error -62
> usb 1-2: device descriptor read/64, error -62
> usb 1-2: new full speed USB device using s3c2410-ohci and address 11
> usb 1-2: device descriptor read/64, error -62
> usb 1-2: device descriptor read/64, error -62
> usb 1-2: new full speed USB device using s3c2410-ohci and address 12
> usb 1-2: device not accepting address 12, error -62
> usb 1-2: new full speed USB device using s3c2410-ohci and address 13
> usb 1-2: device not accepting address 13, error -62
>
>
> Why is it throwing this error ? Is there any driver for USB hub missing in
> 2.6.21 kernel, or do I need to modify more on register settings.
>
> Please help.
>
> Thank You
> GIGIN
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
prev parent reply other threads:[~2011-08-22 10:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 9:17 USB host on s3c2416 GIGIN JOSE
2011-08-22 10:05 ` Thomas Abraham [this message]
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