kc1: MUSB USB controller and fastboot USB gadget support

This adds support for the MUSB USB dual-role controller in peripheral mode,
with configuration options for the fastboot USB gadget.

At this point, flashing the internal eMMC is support.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

board/amazon/kc1/kc1.c

@@ -8,6 +8,9 @@
 
 #include <config.h>
 #include <common.h>
+#include <linux/ctype.h>
+#include <linux/usb/musb.h>
+#include <asm/omap_musb.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/gpio.h>
@@ -21,6 +24,26 @@ const struct omap_sysinfo sysinfo = {
 	.board_string = "kc1"
 };
 
+static struct musb_hdrc_config musb_config = {
+	.multipoint = 1,
+	.dyn_fifo = 1,
+	.num_eps = 16,
+	.ram_bits = 12
+};
+
+static struct omap_musb_board_data musb_board_data = {
+	.interface_type	= MUSB_INTERFACE_UTMI,
+};
+
+static struct musb_hdrc_platform_data musb_platform_data = {
+	.mode = MUSB_PERIPHERAL,
+	.config = &musb_config,
+	.power = 100,
+	.platform_ops = &omap2430_ops,
+	.board_data = &musb_board_data,
+};
+
+
 void set_muxconf_regs(void)
 {
 	do_set_mux((*ctrl)->control_padconf_core_base, core_padconf_array,
@@ -66,6 +89,10 @@ int misc_init_r(void)
 
 	omap_die_id_serial();
 
+	/* MUSB */
+
+	musb_register(&musb_platform_data, &musb_board_data, (void *)MUSB_BASE);
+
 	return 0;
 }
 

board/amazon/kc1/kc1.h

@@ -87,6 +87,10 @@ const struct pad_conf_entry core_padconf_array[] = {
 	{ UNIPRO_RY1,		(IEN  | DIS | M3) }, /* gpio_178 */
 	{ UNIPRO_RX2,		(IDIS | DIS | M7) }, /* safe_mode */
 	{ UNIPRO_RY2,		(IDIS | DIS | M7) }, /* safe_mode */
+	/* USBA0_OTG */
+	{ USBA0_OTG_CE,		(IDIS | PTD | M0) }, /* usba0_otg_ce */
+	{ USBA0_OTG_DP,		(IEN  | DIS | M0) }, /* usba0_otg_dp */
+	{ USBA0_OTG_DM,		(IEN  | DIS | M0) }, /* usba0_otg_dm */
 };
 
 #endif

configs/kc1_defconfig

@@ -10,3 +10,5 @@ CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NFS is not set
 CONFIG_SYS_NS16550=y
+CONFIG_USB=y
+CONFIG_USB_MUSB_GADGET=y

include/configs/kc1.h

@@ -172,6 +172,41 @@
 					  115200 }
 
 /*
+ * USB gadget
+ */
+
+#define CONFIG_USB_MUSB_PIO_ONLY
+#define CONFIG_USB_MUSB_OMAP2PLUS
+
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_USB_GADGET_VBUS_DRAW	0
+
+/*
+ * Download
+ */
+
+#define CONFIG_USB_GADGET_DOWNLOAD
+
+#define CONFIG_G_DNL_VENDOR_NUM		0x0451
+#define CONFIG_G_DNL_PRODUCT_NUM	0xd022
+#define CONFIG_G_DNL_MANUFACTURER	"Texas Instruments"
+
+/*
+ * Fastboot
+ */
+
+#define CONFIG_USB_FUNCTION_FASTBOOT
+
+#define CONFIG_FASTBOOT_BUF_ADDR	CONFIG_SYS_LOAD_ADDR
+#define CONFIG_FASTBOOT_BUF_SIZE	0x2000000
+
+#define CONFIG_FASTBOOT_FLASH
+#define CONFIG_FASTBOOT_FLASH_MMC_DEV	0
+
+#define CONFIG_CMD_FASTBOOT
+
+/*
  * Environment
  */