Issues with SD Card & USB Interfaces on i.MX233

[GopiNagaBharath]

Hello Every one,

We want to be able to achieve the following through the imx233 EVK at one time:-

1)      Access the USB mass storage device

2)      Connect the EVK to the PC and access it as a mass storage device

3)      Access the SDCard

4)      Access the NAND Flash

We have made the following changes to the kernel.

For SPI Access

CONFIG _SPI = Y

CONFIG_SPI_MXS = [y | m]

FOR MMC Configuration

CONFIG_MMC

CONFIG_MMC_BLOCK

CONFIG_MMC_MXS

CONFIG_MMC_UNSAFE_RESUME

For USB Mass Storage and File Storage

CONFIG_USB

CONFIG_USB_EHCI_HCD

CONFIG_USB_EHCI_ARC

CONFIG_USB_EHCI_ARC_OTG

CONFIG_USB_EHCI_ROOT_HUB_TT

CONFIG_USB_STORAGE

CONFIG_USB_HID

CONFIG_USB_GADGET

CONFIG_USB_GADGET_ARC

CONFIG_USB_GADGET_ARC_OTG

ONFIG_USB_OTG

CONFIG_USB_FILE_STORAGE

After generating the kernel and rootfs with the above options the .sb images are burned to the nandflash and booted.

The command line give to boot is

initrd console=ttyAM0,115200 ssp1=spi1 ssp2=mmc ubi.mtd=1 root=ubi0:rootfs0 rootfstype=ubifs rw gpmi

Once the system boots I don’t see any

/dev/mmcblk# nodes in the rootfs

Once I insert the USB EHCI driver

insmod ehci-hcd

I don’t see any nodes like below when I connect the USB stick

/dev/sd#

Could you please help in with

a)      How to access SDCard when I am booting from NANDFlash

b)      How to access USB stick driver

Attached is the bootup log.

Regards,

Gopi

Original Attachment has been moved to: dmesg.txt.zip

[nidalp]

dmesg says:

[   19.150000] ARC USBOTG Device Controller driver (1 August 2005)

[   19.150000] Can't find OTG driver!

maybe driver is missing? :smileygrin:

I was once trying to get mx233 on olinuxino-micro board to act as usb gadget (basically as usb device) but couldn't get it to work until I completely removed support for usb host from kernel. No matter what I did, usb host was initializing mx233 as host at bootup preventing connection to PC as a device. So at the end, it just had to go out from kernel :smileyhappy: (didn't need it anyway).

So, maybe there's some conflict in how host/device modes are set up in kernel, but can't really tell you anything more beyond that.