From: Srinath <srin...@mistralsolutions.com> AM3517/05 Craneboard has one EHCI interface on board using port1.
GPIO35 is used as power enable. GPIO38 is used as port1 PHY reset. History: http://marc.info/?l=linux-omap&w=2&r=1&s=Craneboard%3A+Add+USB+EHCI+support&q=t Signed-off-by: Srinath <srin...@mistralsolutions.com> --- arch/arm/mach-omap2/board-am3517crane.c | 40 +++++++++++++++++++++++++++++++ 1 files changed, 40 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/board-am3517crane.c b/arch/arm/mach-omap2/board-am3517crane.c index 13ead33..6fd5dfe 100644 --- a/arch/arm/mach-omap2/board-am3517crane.c +++ b/arch/arm/mach-omap2/board-am3517crane.c @@ -28,8 +28,13 @@ #include <plat/board.h> #include <plat/common.h> +#include <plat/usb.h> #include "mux.h" +#include "control.h" + +#define GPIO_USB_POWER 35 +#define GPIO_USB_NRESET 38 /* Board initialization */ static struct omap_board_config_kernel am3517_crane_config[] __initdata = { @@ -53,10 +58,45 @@ static void __init am3517_crane_init_irq(void) omap_gpio_init(); } +static struct ehci_hcd_omap_platform_data ehci_pdata __initdata = { + .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY, + .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN, + .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN, + + .phy_reset = true, + .reset_gpio_port[0] = GPIO_USB_NRESET, + .reset_gpio_port[1] = -EINVAL, + .reset_gpio_port[2] = -EINVAL +}; + static void __init am3517_crane_init(void) { + int ret; + omap3_mux_init(board_mux, OMAP_PACKAGE_CBB); omap_serial_init(); + + /* Configure GPIO for EHCI port */ + omap_mux_init_gpio(GPIO_USB_POWER, OMAP_PIN_OUTPUT); + + ret = gpio_request(GPIO_USB_POWER, "usb_ehci_enable"); + if (ret < 0) { + pr_err("Cannot request GPIO %d\n", GPIO_USB_POWER); + return; + } + + ret = gpio_direction_output(GPIO_USB_POWER, 1); + if (ret < 0) + goto err; + + omap_mux_init_gpio(GPIO_USB_NRESET, OMAP_PIN_OUTPUT); + usb_ehci_init(&ehci_pdata); + return; + +err: + gpio_free(GPIO_USB_POWER); + pr_err("Unable to initialize EHCI power\n"); + return; } MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD") -- 1.7.1.226.g770c5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
