mx5: Add USB device definitions for Freescale MX51 Babbage HW

This patch is part of enabling USB for Freescale MX51 Babbage HW. This
patch adds device structures for USB Host1 and OTG port, and adds
clocking information for USB HW.

This patch applies to 2.6.34-rc6.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx5/clock-mx51.c

@@ -761,6 +761,10 @@ DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
 DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET,
 	NULL,  NULL, &ipg_clk, NULL);
 
+/* USB */
+DEFINE_CLOCK(usboh3_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG14_OFFSET,
+	NULL, NULL, &pll3_sw_clk, NULL);
+
 /* FEC */
 DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET,
 	NULL,  NULL, &ipg_clk, NULL);
@@ -778,6 +782,10 @@ static struct clk_lookup lookups[] = {
 	_REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
 	_REGISTER_CLOCK(NULL, "gpt", gpt_clk)
 	_REGISTER_CLOCK("fec.0", NULL, fec_clk)
+	_REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk)
+	_REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk)
+	_REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk)
+	_REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", ahb_clk)
 };
 
 static void clk_tree_init(void)

arch/arm/mach-mx5/devices.c

@@ -11,6 +11,7 @@
  */
 
 #include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
 #include <linux/gpio.h>
 #include <mach/hardware.h>
 #include <mach/imx-uart.h>
@@ -92,6 +93,54 @@ struct platform_device mxc_fec_device = {
 	.resource = mxc_fec_resources,
 };
 
+static u64 usb_dma_mask = DMA_BIT_MASK(32);
+
+static struct resource usbotg_resources[] = {
+	{
+		.start = MX51_OTG_BASE_ADDR,
+		.end = MX51_OTG_BASE_ADDR + 0x1ff,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MX51_MXC_INT_USB_OTG,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mxc_usbdr_host_device = {
+	.name = "mxc-ehci",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(usbotg_resources),
+	.resource = usbotg_resources,
+	.dev = {
+		.dma_mask = &usb_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+};
+
+static struct resource usbh1_resources[] = {
+	{
+		.start = MX51_OTG_BASE_ADDR + 0x200,
+		.end = MX51_OTG_BASE_ADDR + 0x200 + 0x1ff,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MX51_MXC_INT_USB_H1,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mxc_usbh1_device = {
+	.name = "mxc-ehci",
+	.id = 1,
+	.num_resources = ARRAY_SIZE(usbh1_resources),
+	.resource = usbh1_resources,
+	.dev = {
+		.dma_mask = &usb_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+};
+
 static struct mxc_gpio_port mxc_gpio_ports[] = {
 	{
 		.chip.label = "gpio-0",

arch/arm/mach-mx5/devices.h

@@ -2,3 +2,5 @@ extern struct platform_device mxc_uart_device0;
 extern struct platform_device mxc_uart_device1;
 extern struct platform_device mxc_uart_device2;
 extern struct platform_device mxc_fec_device;
+extern struct platform_device mxc_usbdr_host_device;
+extern struct platform_device mxc_usbh1_device;