[U-Boot] No power on USB host of IMX25 PDK

[Fabio Estevam]

Hi Hugo,

2011/11/4 Hugo Holgersson <hugoh at student.chalmers.se>:

> 2) Do I need to set the mux's SW_PAD_CTL for the D9 pins?
> 3) Are there any pins I have forgot to mux?

I looked at the IOMUX configuration for USBH2 on the Freescale Linux
BSP and the code is below:

int gpio_usbh2_active(void)
{
	if (mxc_request_iomux(MX25_PIN_D9, MUX_CONFIG_ALT6)  ||	/* PWR */
	    mxc_request_iomux(MX25_PIN_D8, MUX_CONFIG_ALT6)  ||	/* OC */
	    mxc_request_iomux(MX25_PIN_A21, MUX_CONFIG_ALT5)) {	/* BT_USB_CS */
		return -EINVAL;
	}

	/*
	 * This pin controls the mux that switches between
	 * the J18 connector and the on-board bluetooth module.
	 *  dir: 0 = out
	 *  pin: 0 = J18, 1 = BT
	 */
	gpio_request(IOMUX_TO_GPIO(MX25_PIN_A21), "a21");
	gpio_direction_output(IOMUX_TO_GPIO(MX25_PIN_A21), 0);
	gpio_set_value(IOMUX_TO_GPIO(MX25_PIN_A21), 0);

	return 0;
}

,so please make sure you control MX25_PIN_A21 correctly for USB operation.

Regards,

Fabio Estevam