On 11/04/2011 05:24 PM, Fabio Estevam wrote:
On Fri, Nov 4, 2011 at 2:06 PM, Hugo Holgersson hugoh@student.chalmers.se wrote:
Thanks for the input!
Putting the mux code to generic.c, as it was done for the UART's pins, did not change anything...
I write MXC_EHCI_MODE_SERIAL to&ehci->portsc. Exactly the same behavior. Same log.
But the question (1) remains; which is the register (the address) of where mxc_set_usbcontrol() is supposed to write to? I understand Linux use http://lxr.linux.no/#linux+v3.1/arch/arm/mach-imx/ehci-imx25.c uses the IMX_USB_BASE + 0x600 address... But, to me this is outside the usb_ehci-struct, so I cannot figure out what register that is located at that address.
Guessing, what about the following possible candidates inside the usb_echi-struct? usb_ehci->usbgenctrl usb_ehci->hwgeneral usb_ehci->control usb_ehci->isiphyctrl
I need to find some docs on the controller's registers to understand that.
You need to check MX25RM (Reference Manual) available at http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX257&n...
Regards,
Fabio Estevam
#define USBCTRL_OTGBASE_OFFSET 0x600 should maybe be called just USB_CTRL_OFFSET.
According to the reference manual, it is a "USBOH"-register. Concerning both of the two, independent cores (OTG and "Host") of the chip. (Page 1747)
So, it is indeed outside the usb_ehci struct! Sorry!
Best regards,
Hugo Holgersson