diff options
| author | Srinath | 2010-12-23 12:17:48 -0800 |
|---|---|---|
| committer | Tony Lindgren | 2010-12-23 12:17:48 -0800 |
| commit | 840b929680c0d79f5248724d1b6b6d3f2ca3159e (patch) | |
| tree | bfbca26e9ad82018e99585a898c652188b333424 /arch/arm | |
| parent | 0b50c691f93a973136dc821ef11372ffdfae9646 (diff) | |
arm: omap: craneboard: Add USB EHCI support
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%253A%2BAdd%2BUSB%2BEHCI%2Bsupport&q=b
Signed-off-by: Srinath <srinath@mistralsolutions.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/board-am3517crane.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-am3517crane.c b/arch/arm/mach-omap2/board-am3517crane.c index 781ed2558e12..71acb5ab281c 100644 --- a/arch/arm/mach-omap2/board-am3517crane.c +++ b/arch/arm/mach-omap2/board-am3517crane.c @@ -19,6 +19,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/gpio.h> #include <mach/hardware.h> #include <asm/mach-types.h> @@ -27,8 +28,14 @@ #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 = { @@ -52,10 +59,51 @@ static void __init am3517_crane_init_irq(void) omap_init_irq(); } +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 */ + if (omap_mux_init_gpio(GPIO_USB_NRESET, OMAP_PIN_OUTPUT)) { + pr_err("Can not configure mux for GPIO_USB_NRESET %d\n", + GPIO_USB_NRESET); + return; + } + + if (omap_mux_init_gpio(GPIO_USB_POWER, OMAP_PIN_OUTPUT)) { + pr_err("Can not configure mux for GPIO_USB_POWER %d\n", + GPIO_USB_POWER); + return; + } + + ret = gpio_request(GPIO_USB_POWER, "usb_ehci_enable"); + if (ret < 0) { + pr_err("Can not request GPIO %d\n", GPIO_USB_POWER); + return; + } + + ret = gpio_direction_output(GPIO_USB_POWER, 1); + if (ret < 0) { + gpio_free(GPIO_USB_POWER); + pr_err("Unable to initialize EHCI power\n"); + return; + } + + usb_ehci_init(&ehci_pdata); } MACHINE_START(CRANEBOARD, "AM3517/05 CRANEBOARD") |