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authorDaniel Mack <daniel@caiaq.de>2009-11-19 12:02:09 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2009-11-19 17:11:01 +0100
commita050c8e9b70b90a3e3b808a12d985a31e19c2f95 (patch)
treed8f3136c438d16c858726e7a3baac45ad1157cd3 /arch/arm/mach-mx3
parent84677d114a7bcba11981a76ee60498a1b41d9d94 (diff)
downloadop-kernel-dev-a050c8e9b70b90a3e3b808a12d985a31e19c2f95.zip
op-kernel-dev-a050c8e9b70b90a3e3b808a12d985a31e19c2f95.tar.gz
ARM: MX3: add USB functions for mx31litekit
Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx3')
-rw-r--r--arch/arm/mach-mx3/mx31lite.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c
index 03762a3..4651e23 100644
--- a/arch/arm/mach-mx3/mx31lite.c
+++ b/arch/arm/mach-mx3/mx31lite.c
@@ -28,6 +28,8 @@
#include <linux/smsc911x.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@@ -44,6 +46,8 @@
#include <mach/irqs.h>
#include <mach/mxc_nand.h>
#include <mach/spi.h>
+#include <mach/mxc_ehci.h>
+#include <mach/ulpi.h>
#include "devices.h"
@@ -127,6 +131,56 @@ static struct spi_board_info mc13783_spi_dev __initdata = {
};
/*
+ * USB
+ */
+
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+ PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+static int usbh2_init(struct platform_device *pdev)
+{
+ int pins[] = {
+ MX31_PIN_USBH2_DATA0__USBH2_DATA0,
+ MX31_PIN_USBH2_DATA1__USBH2_DATA1,
+ MX31_PIN_USBH2_CLK__USBH2_CLK,
+ MX31_PIN_USBH2_DIR__USBH2_DIR,
+ MX31_PIN_USBH2_NXT__USBH2_NXT,
+ MX31_PIN_USBH2_STP__USBH2_STP,
+ };
+
+ mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
+
+ mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
+
+ mxc_iomux_set_gpr(MUX_PGP_UH2, true);
+
+ /* chip select */
+ mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
+ "USBH2_CS");
+ gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
+ gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
+
+ return 0;
+}
+
+static struct mxc_usbh_platform_data usbh2_pdata = {
+ .init = usbh2_init,
+ .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
+ .flags = MXC_EHCI_POWER_PINS_ENABLED,
+};
+
+/*
* This structure defines the MX31 memory map.
*/
static struct map_desc mx31lite_io_desc[] __initdata = {
@@ -177,6 +231,12 @@ static void __init mxc_board_init(void)
mxc_register_device(&mxc_spi_device1, &spi1_pdata);
spi_register_board_info(&mc13783_spi_dev, 1);
+ /* USB */
+ usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+ USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
+
+ mxc_register_device(&mxc_usbh2, &usbh2_pdata);
+
/* SMSC9117 IRQ pin */
ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
if (ret)
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