omap3: cm-t3517: add USB support
Add both host and mUSB support.
Currently, the selection between host USB and mUSB is done through the
config file.
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Reviewed-by: Tom Rini <trini@ti.com>
diff --git a/board/compulab/cm_t3517/cm_t3517.c b/board/compulab/cm_t3517/cm_t3517.c
index 056fc15..6abecc2 100644
--- 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 @@
"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 @@
status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
#endif
+ cm_t3517_musb_init();
+
return 0;
}
@@ -58,3 +112,31 @@
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 */