omap3: cm-t3517: add USB support

[people/ms/u-boot.git] / board / compulab / cm_t3517 / cm_t3517.c

diff --git a/board/compulab/cm_t3517/cm_t3517.c b/board/compulab/cm_t3517/cm_t3517.c
index 056fc1581d179e555fc2a65edd981bd0e6510785..6abecc20afbbe1f3de6153905a2c37c05fd86d22 100644 (file)
--- a/board/compulab/cm_t3517/cm_t3517.c
+++ b/board/compulab/cm_t3517/cm_t3517.c
@@ -8,14 +8,19 @@
 
 #include <common.h>
 #include <status_led.h>
+#include <usb.h>
 #include <mmc.h>
 #include <linux/compiler.h>
+#include <linux/usb/musb.h>
 
 #include <asm/io.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/am35x_def.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/arch/musb.h>
+#include <asm/omap_musb.h>
+#include <asm/ehci-omap.h>
 
 #include "../common/common.h"
 
@@ -27,6 +32,53 @@ const omap3_sysinfo sysinfo = {
        "NAND 128/512M",
 };
 
+#ifdef CONFIG_USB_MUSB_AM35X
+static struct musb_hdrc_config cm_t3517_musb_config = {
+       .multipoint     = 1,
+       .dyn_fifo       = 1,
+       .num_eps        = 16,
+       .ram_bits       = 12,
+};
+
+static struct omap_musb_board_data cm_t3517_musb_board_data = {
+       .set_phy_power          = am35x_musb_phy_power,
+       .clear_irq              = am35x_musb_clear_irq,
+       .reset                  = am35x_musb_reset,
+};
+
+static struct musb_hdrc_platform_data cm_t3517_musb_pdata = {
+#if defined(CONFIG_MUSB_HOST)
+       .mode           = MUSB_HOST,
+#elif defined(CONFIG_MUSB_GADGET)
+       .mode           = MUSB_PERIPHERAL,
+#else
+#error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
+#endif
+       .config         = &cm_t3517_musb_config,
+       .power          = 250,
+       .platform_ops   = &am35x_ops,
+       .board_data     = &cm_t3517_musb_board_data,
+};
+
+static void cm_t3517_musb_init(void)
+{
+       /*
+        * Set up USB clock/mode in the DEVCONF2 register.
+        * USB2.0 PHY reference clock is 13 MHz
+        */
+       clrsetbits_le32(&am35x_scm_general_regs->devconf2,
+                       CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
+                       CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
+                       CONF2_VBDTCTEN | CONF2_DATPOL);
+
+       if (musb_register(&cm_t3517_musb_pdata, &cm_t3517_musb_board_data,
+                         (void *)AM35XX_IPSS_USBOTGSS_BASE))
+               printf("Failed initializing AM35x MUSB!\n");
+}
+#else
+static inline void am3517_evm_musb_init(void) {}
+#endif
+
 int board_init(void)
 {
        gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
@@ -38,6 +90,8 @@ int board_init(void)
        status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
 #endif
 
+       cm_t3517_musb_init();
+
        return 0;
 }
 
@@ -58,3 +112,31 @@ int board_mmc_init(bd_t *bis)
        return omap_mmc_init(0, 0, 0, SB_T35_CD_GPIO, SB_T35_WP_GPIO);
 }
 #endif
+
+#ifdef CONFIG_USB_EHCI_OMAP
+static struct omap_usbhs_board_data cm_t3517_usbhs_bdata = {
+       .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
+       .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
+       .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
+};
+
+#define CM_T3517_USB_HUB_RESET_GPIO    152
+#define SB_T35_USB_HUB_RESET_GPIO      98
+
+int ehci_hcd_init(int index, enum usb_init_type init,
+                       struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+       cl_usb_hub_init(CM_T3517_USB_HUB_RESET_GPIO, "cm-t3517 hub rst");
+       cl_usb_hub_init(SB_T35_USB_HUB_RESET_GPIO, "sb-t35 hub rst");
+
+       return omap_ehci_hcd_init(index, &cm_t3517_usbhs_bdata, hccr, hcor);
+}
+
+int ehci_hcd_stop(void)
+{
+       cl_usb_hub_deinit(CM_T3517_USB_HUB_RESET_GPIO);
+       cl_usb_hub_deinit(SB_T35_USB_HUB_RESET_GPIO);
+
+       return omap_ehci_hcd_stop();
+}
+#endif /* CONFIG_USB_EHCI_OMAP */