[U-Boot] [PATCH] usb: imx: Allow multiple USB ports to be used at the same time on mx5

[Marek Vasut <marex@denx.de>]

On Thursday, May 21, 2015 at 11:02:55 PM, Matthew Starr wrote:
> CONFIG_MXC_USB_PORT was used to define which USB port was to be
> initialized.  If CONFIG_USB_MAX_CONTROLLER_COUNT > 1, then the
> port specified by CONFIG_MXC_USB_PORT would be duplicated
> CONFIG_USB_MAX_CONTROLLER_COUNT times including duplicating all
> devices connected to the ports.  None of the other USB ports would
> be available for use.
> 
> The fix is to remove all instances of CONFIG_MXC_USB_PORT from the
> imx53 ehci driver since it was only allowing the port specified by
> CONFIG_MXC_USB_PORT to be populated.  Then use
> CONFIG_USB_MAX_CONTROLLER_COUNT to specifiy which USB ports should be
> enabled, starting with port 0.  If port 1 is needed, then set
> CONFIG_USB_MAX_CONTROLLER_COUNT to 2 so 2 ports get populated (port 0
> and port 1) even though port 0 will not be used.
> 
> Configurations for all boards affected are updated.
> 
> Signed-off-by: Matthew Starr <mstarr@hedonline.com>

Hi! Why don't you just define a list of controllers which should be
initialized instead ?

#define CONTROLLERS_TO_INIT { USB1, USB3 }

Where USB1 and USB3 is the address of the controller. Note that these
addresses are defined in arch/arm/include/ headers.

Best regards,
Marek Vasut