Hi Fabio,

On 10/21/2011 02:54 PM, Fabio Estevam wrote:

Hi Stefano,

I am trying to add USBH2 support for MX31PDK and I am using qong code as reference.

When I add the USB related defines in mx31pdk.h (same as qong.h) :

/* USB */ #define CONFIG_CMD_USB #ifdef CONFIG_CMD_USB #define CONFIG_USB_EHCI /* Enable EHCI USB support */ #define CONFIG_USB_EHCI_MXC #define CONFIG_EHCI_HCD_INIT_AFTER_RESET #define CONFIG_MXC_USB_PORT 2 #define CONFIG_MXC_USB_PORTSC (MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT) #define CONFIG_MXC_USB_FLAGS MXC_EHCI_POWER_PINS_ENABLED #define CONFIG_EHCI_IS_TDI #define CONFIG_USB_STORAGE #define CONFIG_DOS_PARTITION #define CONFIG_SUPPORT_VFAT #define CONFIG_CMD_EXT2 #define CONFIG_CMD_FAT #endif /* CONFIG_CMD_USB */

, the mx31pdk board no longer boots.

I also took care of the USBH2 IOMUX, but even without the IOMUX the board does not boot.

Is the IOMUX setup correct?

Do you see anything obvious that I am missing here? Does qong board boot fine on your top of tree git?

The USB pins do need to be setup properly? Search for "usb" in qong.c and have a look to

http://lxr.linux.no/#linux+v3.0.4/arch/arm/mach-imx/mach-mx31_3ds.c

Hope it helps.

Wolfgang.