[U-Boot] [PATCH 09/11] omap3: cm-t3517: add USB support

Igor Grinberg
2014-11-03T09:32:25Z

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>
---
board/compulab/cm_t3517/cm_t3517.c | 82 ++++++++++++++++++++++++++++++++++++++
board/compulab/cm_t3517/mux.c | 38 ++++++++++++++++++
include/configs/cm_t3517.h | 17 ++++++++
3 files changed, 137 insertions(+)

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 @@ 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 f799d21..e1575a6 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 02ec932..1c2d1f4 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>

--
2.0.4