#include <common.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
-#include <asm/arch/tegra20.h>
-#include <asm/arch/clk_rst.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h>
-#include <asm/arch/sys_proto.h>
-#include <asm/arch/uart.h>
+#include <asm/arch/tegra.h>
#include <asm/arch/usb.h>
+#include <usb/ulpi.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch-tegra/sys_proto.h>
+#include <asm/arch-tegra/uart.h>
#include <libfdt.h>
#include <fdtdec.h>
+#ifdef CONFIG_USB_ULPI
+ #ifndef CONFIG_USB_ULPI_VIEWPORT
+ #error "To use CONFIG_USB_ULPI on Tegra Boards you have to also \
+ define CONFIG_USB_ULPI_VIEWPORT"
+ #endif
+#endif
+
enum {
USB_PORTS_MAX = 4, /* Maximum ports we allow */
};
struct fdt_usb {
struct usb_ctlr *reg; /* address of registers in physical memory */
unsigned utmi:1; /* 1 if port has external tranceiver, else 0 */
+ unsigned ulpi:1; /* 1 if port has external ULPI transceiver */
unsigned enabled:1; /* 1 to enable, 0 to disable */
unsigned has_legacy_mode:1; /* 1 if this port has legacy mode */
enum dr_mode dr_mode; /* dual role mode */
enum periph_id periph_id;/* peripheral id */
struct fdt_gpio_state vbus_gpio; /* GPIO for vbus enable */
+ struct fdt_gpio_state phy_reset_gpio; /* GPIO to reset ULPI phy */
};
static struct fdt_usb port[USB_PORTS_MAX]; /* List of valid USB ports */
static unsigned port_count; /* Number of available ports */
-static int port_current; /* Current port (-1 = none) */
/*
* This table has USB timing parameters for each Oscillator frequency we
/* UTMIP High Speed Sync Start Delay */
static const u8 utmip_hs_sync_start_delay = 9;
-/* Put the port into host mode (this only works for OTG ports) */
+/* Put the port into host mode */
static void set_host_mode(struct fdt_usb *config)
{
- if (config->dr_mode == DR_MODE_OTG) {
- /* Check whether remote host from USB1 is driving VBus */
- if (readl(&config->reg->phy_vbus_sensors) & VBUS_VLD_STS)
- return;
-
- /*
- * If not driving, we set the GPIO to enable VBUS. We assume
- * that the pinmux is set up correctly for this.
- */
- if (fdt_gpio_isvalid(&config->vbus_gpio)) {
- fdtdec_setup_gpio(&config->vbus_gpio);
- gpio_direction_output(config->vbus_gpio.gpio, 1);
- debug("set_host_mode: GPIO %d high\n",
- config->vbus_gpio.gpio);
- }
+ /*
+ * If we are an OTG port, check if remote host is driving VBus and
+ * bail out in this case.
+ */
+ if (config->dr_mode == DR_MODE_OTG &&
+ (readl(&config->reg->phy_vbus_sensors) & VBUS_VLD_STS))
+ return;
+
+ /*
+ * If not driving, we set the GPIO to enable VBUS. We assume
+ * that the pinmux is set up correctly for this.
+ */
+ if (fdt_gpio_isvalid(&config->vbus_gpio)) {
+ fdtdec_setup_gpio(&config->vbus_gpio);
+ gpio_direction_output(config->vbus_gpio.gpio,
+ (config->vbus_gpio.flags & FDT_GPIO_ACTIVE_LOW) ?
+ 0 : 1);
+ debug("set_host_mode: GPIO %d %s\n", config->vbus_gpio.gpio,
+ (config->vbus_gpio.flags & FDT_GPIO_ACTIVE_LOW) ?
+ "low" : "high");
}
}
*/
}
-/* set up the USB controller with the parameters provided */
-static int init_usb_controller(struct fdt_usb *config,
+/* set up the UTMI USB controller with the parameters provided */
+static int init_utmi_usb_controller(struct fdt_usb *config,
struct usb_ctlr *usbctlr, const u32 timing[])
{
u32 val;
if (!loop_count)
return -1;
- return 0;
-}
+ /* Disable ICUSB FS/LS transceiver */
+ clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
+
+ /* Select UTMI parallel interface */
+ clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK,
+ PTS_UTMI << PTS_SHIFT);
+ clrbits_le32(&usbctlr->port_sc1, STS);
-static void power_up_port(struct usb_ctlr *usbctlr)
-{
/* Deassert power down state */
clrbits_le32(&usbctlr->utmip_xcvr_cfg0, UTMIP_FORCE_PD_POWERDOWN |
UTMIP_FORCE_PD2_POWERDOWN | UTMIP_FORCE_PDZI_POWERDOWN);
clrbits_le32(&usbctlr->utmip_xcvr_cfg1, UTMIP_FORCE_PDDISC_POWERDOWN |
UTMIP_FORCE_PDCHRP_POWERDOWN | UTMIP_FORCE_PDDR_POWERDOWN);
+
+ return 0;
}
+#ifdef CONFIG_USB_ULPI
+/* if board file does not set a ULPI reference frequency we default to 24MHz */
+#ifndef CONFIG_ULPI_REF_CLK
+#define CONFIG_ULPI_REF_CLK 24000000
+#endif
+
+/* set up the ULPI USB controller with the parameters provided */
+static int init_ulpi_usb_controller(struct fdt_usb *config,
+ struct usb_ctlr *usbctlr)
+{
+ u32 val;
+ int loop_count;
+ struct ulpi_viewport ulpi_vp;
+
+ /* set up ULPI reference clock on pllp_out4 */
+ clock_enable(PERIPH_ID_DEV2_OUT);
+ clock_set_pllout(CLOCK_ID_PERIPH, PLL_OUT4, CONFIG_ULPI_REF_CLK);
+
+ /* reset ULPI phy */
+ if (fdt_gpio_isvalid(&config->phy_reset_gpio)) {
+ fdtdec_setup_gpio(&config->phy_reset_gpio);
+ gpio_direction_output(config->phy_reset_gpio.gpio, 0);
+ mdelay(5);
+ gpio_set_value(config->phy_reset_gpio.gpio, 1);
+ }
+
+ /* Reset the usb controller */
+ clock_enable(config->periph_id);
+ usbf_reset_controller(config, usbctlr);
+
+ /* enable pinmux bypass */
+ setbits_le32(&usbctlr->ulpi_timing_ctrl_0,
+ ULPI_CLKOUT_PINMUX_BYP | ULPI_OUTPUT_PINMUX_BYP);
+
+ /* Select ULPI parallel interface */
+ clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK, PTS_ULPI << PTS_SHIFT);
+
+ /* enable ULPI transceiver */
+ setbits_le32(&usbctlr->susp_ctrl, ULPI_PHY_ENB);
+
+ /* configure ULPI transceiver timings */
+ val = 0;
+ writel(val, &usbctlr->ulpi_timing_ctrl_1);
+
+ val |= ULPI_DATA_TRIMMER_SEL(4);
+ val |= ULPI_STPDIRNXT_TRIMMER_SEL(4);
+ val |= ULPI_DIR_TRIMMER_SEL(4);
+ writel(val, &usbctlr->ulpi_timing_ctrl_1);
+ udelay(10);
+
+ val |= ULPI_DATA_TRIMMER_LOAD;
+ val |= ULPI_STPDIRNXT_TRIMMER_LOAD;
+ val |= ULPI_DIR_TRIMMER_LOAD;
+ writel(val, &usbctlr->ulpi_timing_ctrl_1);
+
+ /* set up phy for host operation with external vbus supply */
+ ulpi_vp.port_num = 0;
+ ulpi_vp.viewport_addr = (u32)&usbctlr->ulpi_viewport;
+
+ if (ulpi_init(&ulpi_vp)) {
+ printf("Tegra ULPI viewport init failed\n");
+ return -1;
+ }
+
+ ulpi_set_vbus(&ulpi_vp, 1, 1);
+ ulpi_set_vbus_indicator(&ulpi_vp, 1, 1, 0);
+
+ /* enable wakeup events */
+ setbits_le32(&usbctlr->port_sc1, WKCN | WKDS | WKOC);
+
+ /* Enable and wait for the phy clock to become valid in 100 ms */
+ setbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
+ for (loop_count = 100000; loop_count != 0; loop_count--) {
+ if (readl(&usbctlr->susp_ctrl) & USB_PHY_CLK_VALID)
+ break;
+ udelay(1);
+ }
+ if (!loop_count)
+ return -1;
+ clrbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
+
+ return 0;
+}
+#else
+static int init_ulpi_usb_controller(struct fdt_usb *config,
+ struct usb_ctlr *usbctlr)
+{
+ printf("No code to set up ULPI controller, please enable"
+ "CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT");
+ return -1;
+}
+#endif
+
static void config_clock(const u32 timing[])
{
clock_start_pll(CLOCK_ID_USB,
struct usb_ctlr *usbctlr = config->reg;
if (port_count == USB_PORTS_MAX) {
- debug("tegrausb: Cannot register more than %d ports\n",
+ printf("tegrausb: Cannot register more than %d ports\n",
USB_PORTS_MAX);
return -1;
}
- if (init_usb_controller(config, usbctlr, timing)) {
- debug("tegrausb: Cannot init port\n");
+
+ if (config->utmi && init_utmi_usb_controller(config, usbctlr, timing)) {
+ printf("tegrausb: Cannot init port\n");
return -1;
}
- if (config->utmi) {
- /* Disable ICUSB FS/LS transceiver */
- clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
-
- /* Select UTMI parallel interface */
- clrsetbits_le32(&usbctlr->port_sc1, PTS_MASK,
- PTS_UTMI << PTS_SHIFT);
- clrbits_le32(&usbctlr->port_sc1, STS);
- power_up_port(usbctlr);
+
+ if (config->ulpi && init_ulpi_usb_controller(config, usbctlr)) {
+ printf("tegrausb: Cannot init port\n");
+ return -1;
}
+
port[port_count++] = *config;
return 0;
}
-int tegrausb_start_port(unsigned portnum, u32 *hccr, u32 *hcor)
+int tegrausb_start_port(int portnum, u32 *hccr, u32 *hcor)
{
struct usb_ctlr *usbctlr;
if (portnum >= port_count)
return -1;
- tegrausb_stop_port();
set_host_mode(&port[portnum]);
usbctlr = port[portnum].reg;
*hccr = (u32)&usbctlr->cap_length;
*hcor = (u32)&usbctlr->usb_cmd;
- port_current = portnum;
return 0;
}
-int tegrausb_stop_port(void)
+int tegrausb_stop_port(int portnum)
{
struct usb_ctlr *usbctlr;
- if (port_current == -1)
- return -1;
-
- usbctlr = port[port_current].reg;
+ usbctlr = port[portnum].reg;
/* Stop controller */
writel(0, &usbctlr->usb_cmd);
/* Initiate controller reset */
writel(2, &usbctlr->usb_cmd);
udelay(1000);
- port_current = -1;
+
return 0;
}
phy = fdt_getprop(blob, node, "phy_type", NULL);
config->utmi = phy && 0 == strcmp("utmi", phy);
+ config->ulpi = phy && 0 == strcmp("ulpi", phy);
config->enabled = fdtdec_get_is_enabled(blob, node);
config->has_legacy_mode = fdtdec_get_bool(blob, node,
"nvidia,has-legacy-mode");
return -FDT_ERR_NOTFOUND;
}
fdtdec_decode_gpio(blob, node, "nvidia,vbus-gpio", &config->vbus_gpio);
- debug("enabled=%d, legacy_mode=%d, utmi=%d, periph_id=%d, vbus=%d, "
- "dr_mode=%d\n", config->enabled, config->has_legacy_mode,
- config->utmi, config->periph_id, config->vbus_gpio.gpio,
- config->dr_mode);
+ fdtdec_decode_gpio(blob, node, "nvidia,phy-reset-gpio",
+ &config->phy_reset_gpio);
+ debug("enabled=%d, legacy_mode=%d, utmi=%d, ulpi=%d, periph_id=%d, "
+ "vbus=%d, phy_reset=%d, dr_mode=%d\n",
+ config->enabled, config->has_legacy_mode, config->utmi,
+ config->ulpi, config->periph_id, config->vbus_gpio.gpio,
+ config->phy_reset_gpio.gpio, config->dr_mode);
return 0;
}
return -1;
set_host_mode(&config);
}
- port_current = -1;
return 0;
}
projects / karo-tx-uboot.git / blobdiff