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>

3 files changed, 137 insertions, 0 deletions

diff --git a/board/compulab/cm_t3517/cm_t3517.c b/board/compulab/cm_t3517/cm_t3517.c
index 056fc1581d..6abecc20af 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 @@ 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 */
diff --git a/board/compulab/cm_t3517/mux.c b/board/compulab/cm_t3517/mux.c
index f799d211c4..e1575a61bd 100644
--- a/board/compulab/cm_t3517/mux.c
+++ b/board/compulab/cm_t3517/mux.c
@@ -104,6 +104,10 @@ void set_muxconf_regs(void)
 	MUX_VAL(CP(UART2_CTS),		(IEN  | PTU | EN  | M4)); /*GPIO_144*/
 	/* WIFI nRESET GPIO145 */
 	MUX_VAL(CP(UART2_RTS),		(IEN  | PTD | EN  | M4)); /*GPIO_145*/
+	/* USB1 PHY Reset GPIO 146 */
+	MUX_VAL(CP(UART2_TX),		(IEN  | PTD | EN  | M4)); /*GPIO_146*/
+	/* USB2 PHY Reset GPIO 147 */
+	MUX_VAL(CP(UART2_RX),		(IEN  | PTD | EN  | M4)); /*GPIO_147*/
 
 	/* MMC1 */
 	MUX_VAL(CP(MMC1_CLK),		(IDIS | PTU | EN  | M0));
@@ -119,12 +123,46 @@ void set_muxconf_regs(void)
 	MUX_VAL(CP(I2C3_SCL),		(IEN  | PTU | EN  | M0));
 	MUX_VAL(CP(I2C3_SDA),		(IEN  | PTU | EN  | M0));
 
+	/* SB-T35 USB HUB Reset GPIO98 */
+	MUX_VAL(CP(CCDC_WEN),		(IDIS | PTU | EN  | M4)); /*GPIO_98*/
+	/* CM-T3517 USB HUB Reset GPIO152 */
+	MUX_VAL(CP(MCBSP4_CLKX),	(IDIS | PTD | DIS | M4)); /*GPIO_152*/
+
 	/* Green LED GPIO186 */
 	MUX_VAL(CP(SYS_CLKOUT2),	(IDIS | PTU | DIS | M4)); /*GPIO_186*/
 
 	/* RTC V3020 CS Enable GPIO160 */
 	MUX_VAL(CP(MCBSP_CLKS),		(IEN  | PTD | EN  | M4)); /*GPIO_160*/
 
+	/* USB0 - mUSB */
+	MUX_VAL(CP(USB0_DRVBUS),	(IEN  | PTD | EN  | M0));
+	/* USB1 EHCI */
+	MUX_VAL(CP(ETK_D0_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT0*/
+	MUX_VAL(CP(ETK_D1_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT1*/
+	MUX_VAL(CP(ETK_D2_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT2*/
+	MUX_VAL(CP(ETK_D7_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT3*/
+	MUX_VAL(CP(ETK_D4_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT4*/
+	MUX_VAL(CP(ETK_D5_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT5*/
+	MUX_VAL(CP(ETK_D6_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT6*/
+	MUX_VAL(CP(ETK_D3_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DT7*/
+	MUX_VAL(CP(ETK_D8_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_DIR*/
+	MUX_VAL(CP(ETK_D9_ES2),		(IEN  | PTD | EN  | M3)); /*HSUSB1_NXT*/
+	MUX_VAL(CP(ETK_CTL_ES2),	(IDIS | PTD | DIS | M3)); /*HSUSB1_CLK*/
+	MUX_VAL(CP(ETK_CLK_ES2),	(IDIS | PTU | DIS | M3)); /*HSUSB1_STP*/
+	/* USB2 EHCI */
+	MUX_VAL(CP(ETK_D14_ES2),	(IEN  | PTD | EN  | M3)); /*HSUSB2_DT0*/
+	MUX_VAL(CP(ETK_D15_ES2),	(IEN  | PTD | EN  | M3)); /*HSUSB2_DT1*/
+	MUX_VAL(CP(MCSPI1_CS3),		(IEN  | PTD | EN  | M3)); /*HSUSB2_DT2*/
+	MUX_VAL(CP(MCSPI2_CS1),		(IEN  | PTD | EN  | M3)); /*HSUSB2_DT3*/
+	MUX_VAL(CP(MCSPI2_SIMO),	(IEN  | PTD | EN  | M3)); /*HSUSB2_DT4*/
+	MUX_VAL(CP(MCSPI2_SOMI),	(IEN  | PTD | EN  | M3)); /*HSUSB2_DT5*/
+	MUX_VAL(CP(MCSPI2_CS0),		(IEN  | PTD | EN  | M3)); /*HSUSB2_DT6*/
+	MUX_VAL(CP(MCSPI2_CLK),		(IEN  | PTD | EN  | M3)); /*HSUSB2_DT7*/
+	MUX_VAL(CP(ETK_D12_ES2),	(IEN  | PTD | EN  | M3)); /*HSUSB2_DIR*/
+	MUX_VAL(CP(ETK_D13_ES2),	(IEN  | PTD | EN  | M3)); /*HSUSB2_NXT*/
+	MUX_VAL(CP(ETK_D10_ES2),	(IDIS | PTD | DIS | M3)); /*HSUSB2_CLK*/
+	MUX_VAL(CP(ETK_D11_ES2),	(IDIS | PTU | DIS | M3)); /*HSUSB2_STP*/
+
 	/* SYS_BOOT */
 	MUX_VAL(CP(SYS_BOOT0),		(IEN  | PTU | DIS | M4)); /*GPIO_2*/
 	MUX_VAL(CP(SYS_BOOT1),		(IEN  | PTU | DIS | M4)); /*GPIO_3*/
diff --git a/include/configs/cm_t3517.h b/include/configs/cm_t3517.h
index d691b9fa50..046649db97 100644
--- a/include/configs/cm_t3517.h
+++ b/include/configs/cm_t3517.h
@@ -98,6 +98,23 @@
 #define CONFIG_OMAP_HSMMC
 #define CONFIG_DOS_PARTITION
 
+/* USB */
+#define CONFIG_USB_MUSB_AM35X
+
+#ifndef CONFIG_USB_MUSB_AM35X
+#define CONFIG_USB_OMAP3
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_OMAP
+#define CONFIG_OMAP_EHCI_PHY1_RESET_GPIO 146
+#define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 147
+#else /* !CONFIG_USB_MUSB_AM35X */
+#define CONFIG_MUSB_HOST
+#define CONFIG_MUSB_PIO_ONLY
+#endif /* CONFIG_USB_MUSB_AM35X */
+
+#define CONFIG_USB_STORAGE
+#define CONFIG_CMD_USB
+
 /* commands to include */
 #include <config_cmd_default.h>