USB host on s3c2416

[Thomas Abraham]

Hi Gigin,

On 22 August 2011 14:47, GIGIN JOSE <gigin_jose at 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
>
>
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