Dear Benoît Thébaudeau, > Dear Marek Vasut, > > On Friday, May 3, 2013 4:59:13 PM, Benoît Thébaudeau wrote: > > Dear Marek Vasut, > > > > On Thursday, April 25, 2013 10:16:03 PM, Marek Vasut wrote: > > > Add basic support for the DENX M53EVK board. Currently supported is: > > > MMC (incl. booting) > > > NAND (incl. booting) > > > Ethernet, I2C, USB, SATA, RTC. > > > > > > Signed-off-by: Marek Vasut <ma...@denx.de> > > > > [...] > > > > > diff --git a/board/denx/m53evk/m53evk.c b/board/denx/m53evk/m53evk.c > > > new file mode 100644 > > > index 0000000..3289f28 > > > --- /dev/null > > > +++ b/board/denx/m53evk/m53evk.c > > > @@ -0,0 +1,408 @@ > > > > [...] > > > > > +#ifdef CONFIG_USB_EHCI_MX5 > > > +int board_ehci_hcd_init(int port) > > > +{ > > > + if (port == 0) { > > > + /* USB OTG PWRON */ > > > + mxc_request_iomux(MX53_PIN_GPIO_4, IOMUX_CONFIG_ALT1); > > > + mxc_iomux_set_pad(MX53_PIN_GPIO_4, > > > + PAD_CTL_PKE_ENABLE | > > > + PAD_CTL_100K_PD | > > > + PAD_CTL_DRV_HIGH > > > + ); > > > + gpio_direction_output(IOMUX_TO_GPIO(MX53_PIN_GPIO_4), 0); > > > + > > > + /* USB OTG Over Current */ > > > + mxc_request_iomux(MX53_PIN_GPIO_18, IOMUX_CONFIG_ALT1); > > > + mxc_iomux_set_input(MX53_USBOH3_IPP_IND_OTG_OC_SELECT_INPUT, 1); > > > > It looks like there is something wrong here: The last line connects > > OTG.OC to EIM_D21.ALT6, but the line before sets GPIO_18 as GPIO7[13] > > instead of setting > > EIM_D21 as OTG.OC. > > According to http://www.denx-cs.de/doku/?q=m53pinout , USB_OTG_OC is on > ball D7 (i.e. GPIO_18), and ball V3 (i.e. EIM_D21) is not on the SoM > connector. > > So can you clarify what's going on with this signal? Is it handled by > software as a GPIO, and EIM_D21 is just tied high or low on the SoM to > make the hardware controller not complain about a false OC detection?
Yes, the OTG OC is handled by GPIO. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot