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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-01-19 13:58:39 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-01-20 10:32:24 +0100 |
| commit | 67292676434827f9978f61710aadc820b2a5f833 (patch) | |
| tree | f3e690afcf1fe18a5c85df8d000517960d51b016 | |
| parent | 6e7c00feb1d650c99eaeaa65bf47db175c285580 (diff) | |
| download | barebox-67292676434827f9978f61710aadc820b2a5f833.tar.gz barebox-67292676434827f9978f61710aadc820b2a5f833.tar.xz | |
ARM Chumby: Add USB support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/boards/chumby_falconwing/falconwing.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/arch/arm/boards/chumby_falconwing/falconwing.c b/arch/arm/boards/chumby_falconwing/falconwing.c index 76ff9068ff..2887f8cf91 100644 --- a/arch/arm/boards/chumby_falconwing/falconwing.c +++ b/arch/arm/boards/chumby_falconwing/falconwing.c @@ -22,6 +22,7 @@ #include <environment.h> #include <errno.h> #include <mci.h> +#include <usb/ehci.h> #include <asm/armlinux.h> #include <asm/io.h> #include <generated/mach-types.h> @@ -29,6 +30,7 @@ #include <mach/clock.h> #include <mach/mci.h> #include <mach/fb.h> +#include <mach/usb.h> static struct memory_platform_data ram_pdata = { .name = "ram0", @@ -197,10 +199,10 @@ static const uint32_t pad_setup[] = { /* backlight control, to be controled by PWM, here we only want to disable it */ PWM2_GPIO | GPIO_OUT | GPIO_VALUE(0), /* 1 enables, 0 disables the backlight */ - /* send a reset signal to the USB hub */ + /* USB hub reset (active low) */ AUART1_TX_GPIO | GPIO_OUT | GPIO_VALUE(0), - /* USB power disable (FIXME what level to be switched off) */ + /* USB power (active high) */ AUART1_CTS_GPIO | GPIO_OUT | GPIO_VALUE(0), /* Detecting if a display is connected (0 = display attached) (external pull up) */ @@ -298,6 +300,35 @@ static int register_persistant_environment(void) return devfs_add_partition("disk0.1", 0, cdev->size, DEVFS_PARTITION_FIXED, "env0"); } +static struct ehci_platform_data chumby_usb_pdata = { + .flags = EHCI_HAS_TT, + .hccr_offset = 0x100, + .hcor_offset = 0x140, +}; + +static struct device_d usb_dev = { + .name = "ehci", + .id = -1, + .map_base = IMX_USB_BASE, + .size = 0x200, + .platform_data = &chumby_usb_pdata, +}; + +#define GPIO_USB_HUB_RESET 29 +#define GPIO_USB_HUB_POWER 26 + +static void falconwing_init_usb(void) +{ + /* power USB hub */ + gpio_direction_output(GPIO_USB_HUB_POWER, 1); + mdelay(1); + /* bring USB hub out of reset */ + gpio_direction_output(GPIO_USB_HUB_RESET, 1); + + imx_usb_phy_enable(); + register_device(&usb_dev); +} + static int falconwing_devices_init(void) { int i, rc; @@ -313,6 +344,8 @@ static int falconwing_devices_init(void) register_device(&mci_dev); register_device(&ldcif_dev); + falconwing_init_usb(); + armlinux_add_dram(&sdram_dev); armlinux_set_bootparams((void*)(sdram_dev.map_base + 0x100)); armlinux_set_architecture(MACH_TYPE_CHUMBY); |