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-omapw=2r=1s=Craneboard%3A+Add+USB+EHCI+supportq=t
Signed-off-by: Srinath srin...@mistralsolutions.com
---
arch/arm/mach-omap2/board-am3517crane.c | 53 +++
1 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/board-am3517crane.c
b/arch/arm/mach-omap2/board-am3517crane.c
index 8ba4047..1a80175 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_NRESET38
+
/* Board initialization */
static struct omap_board_config_kernel am3517_crane_config[] __initdata = {
@@ -51,10 +58,56 @@ 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 cofigure 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 cofigure 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(Cannot request GPIO %d\n, GPIO_USB_POWER);
+ return;
+ }
+
+ ret = gpio_direction_output(GPIO_USB_POWER, 1);
+ if (ret 0)
+ goto err;
+
+
+ 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
--
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