+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2011 The Chromium OS Authors.
- * Copyright (c) 2009-2013 NVIDIA Corporation
+ * Copyright (c) 2009-2015 NVIDIA Corporation
* Copyright (c) 2013 Lucas Stach
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
-#include <asm/errno.h>
+#include <dm.h>
+#include <linux/errno.h>
#include <asm/io.h>
#include <asm-generic/gpio.h>
#include <asm/arch/clock.h>
#include <asm/arch-tegra/clk_rst.h>
#include <usb.h>
#include <usb/ulpi.h>
-#include <libfdt.h>
-#include <fdtdec.h>
+#include <linux/libfdt.h>
#include "ehci.h"
#endif
#endif
-enum {
- USB_PORTS_MAX = 3, /* Maximum ports we allow */
-};
-
/* Parameters we need for USB */
enum {
PARAM_DIVN, /* PLL FEEDBACK DIVIDer */
USB_CTLR_T20,
USB_CTLR_T30,
USB_CTLR_T114,
+ USB_CTLR_T210,
USB_CTRL_COUNT,
};
/* Information about a USB port */
struct fdt_usb {
+ struct ehci_ctrl ehci;
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 */
- unsigned initialized:1; /* has this port already been initialized? */
enum usb_ctlr_type type;
enum usb_init_type init_type;
enum dr_mode dr_mode; /* dual role mode */
struct gpio_desc 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 */
-/* Port that needs to clear CSC after Port Reset */
-static u32 port_addr_clear_csc;
-
/*
* This table has USB timing parameters for each Oscillator frequency we
* support. There are four sets of values:
{ 0x3C0, 0x0D, 0x00, 0xC, 0, 0x02, 0x33, 0x05, 0x7F, 0x7EF4, 5 },
{ 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x06, 0xBB, 0xBB80, 7 },
{ 0x3C0, 0x0C, 0x00, 0xC, 0, 0x02, 0x2F, 0x04, 0x76, 0x7530, 5 },
- { 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 }
+ { 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
};
static const unsigned T30_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
{ 0x3C0, 0x0D, 0x00, 0xC, 1, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 5 },
{ 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 7 },
{ 0x3C0, 0x0C, 0x00, 0xC, 1, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
- { 0x3C0, 0x1A, 0x00, 0xC, 1, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 }
+ { 0x3C0, 0x1A, 0x00, 0xC, 1, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
};
static const unsigned T114_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
{ 0x3C0, 0x0D, 0x00, 0xC, 2, 0x02, 0x33, 0x09, 0x7F, 0x7EF4, 6 },
{ 0x0C8, 0x04, 0x00, 0x3, 2, 0x03, 0x4B, 0x0C, 0xBB, 0xBB80, 8 },
{ 0x3C0, 0x0C, 0x00, 0xC, 2, 0x02, 0x2F, 0x08, 0x76, 0x7530, 5 },
- { 0x3C0, 0x1A, 0x00, 0xC, 2, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 0xB }
+ { 0x3C0, 0x1A, 0x00, 0xC, 2, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 11 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 },
+ { 0x000, 0x00, 0x00, 0x0, 0, 0x00, 0x00, 0x00, 0x00, 0x0000, 0 }
+};
+
+/* NOTE: 13/26MHz settings are N/A for T210, so dupe 12MHz settings for now */
+static const unsigned T210_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
+ /* DivN, DivM, DivP, KCP, KVCO, Delays Debounce, Bias */
+ { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 32500, 5 },
+ { 0x019, 0x01, 0x01, 0x0, 0, 0x03, 0x4B, 0x0C, 0xBB, 48000, 8 },
+ { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 30000, 5 },
+ { 0x028, 0x01, 0x01, 0x0, 0, 0x02, 0x2F, 0x08, 0x76, 65000, 5 },
+ { 0x019, 0x02, 0x01, 0x0, 0, 0x05, 0x96, 0x18, 0x177, 96000, 15 },
+ { 0x028, 0x04, 0x01, 0x0, 0, 0x04, 0x66, 0x09, 0xFE, 120000, 20 }
};
/* UTMIP Idle Wait Delay */
static const u8 utmip_hs_sync_start_delay = 9;
struct fdt_usb_controller {
- int compat;
/* flag to determine whether controller supports hostpc register */
u32 has_hostpc:1;
const unsigned *pll_parameter;
static struct fdt_usb_controller fdt_usb_controllers[USB_CTRL_COUNT] = {
{
- .compat = COMPAT_NVIDIA_TEGRA20_USB,
.has_hostpc = 0,
.pll_parameter = (const unsigned *)T20_usb_pll,
},
{
- .compat = COMPAT_NVIDIA_TEGRA30_USB,
.has_hostpc = 1,
.pll_parameter = (const unsigned *)T30_usb_pll,
},
{
- .compat = COMPAT_NVIDIA_TEGRA114_USB,
.has_hostpc = 1,
.pll_parameter = (const unsigned *)T114_usb_pll,
},
+ {
+ .has_hostpc = 1,
+ .pll_parameter = (const unsigned *)T210_usb_pll,
+ },
};
/*
if (controller->has_hostpc)
*reg |= EHCI_PS_PE;
- if (((unsigned long)status_reg & TEGRA_USB_ADDR_MASK) != port_addr_clear_csc)
+ if (!config->has_legacy_mode)
return;
/* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
if (ehci_readl(status_reg) & EHCI_PS_CSC)
}
}
-void usbf_reset_controller(struct fdt_usb *config, struct usb_ctlr *usbctlr)
+static void usbf_reset_controller(struct fdt_usb *config,
+ struct usb_ctlr *usbctlr)
{
/* Reset the USB controller with 2us delay */
reset_periph(config->periph_id, 2);
UTMIP_DEBOUNCE_CFG0_MASK,
timing[PARAM_DEBOUNCE_A_TIME] << UTMIP_DEBOUNCE_CFG0_SHIFT);
+ if (timing[PARAM_DEBOUNCE_A_TIME] > 0xFFFF) {
+ clrsetbits_le32(&usbctlr->utmip_debounce_cfg0,
+ UTMIP_DEBOUNCE_CFG0_MASK,
+ (timing[PARAM_DEBOUNCE_A_TIME] >> 1)
+ << UTMIP_DEBOUNCE_CFG0_SHIFT);
+ clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
+ UTMIP_BIAS_DEBOUNCE_TIMESCALE_MASK,
+ 1 << UTMIP_BIAS_DEBOUNCE_TIMESCALE_SHIFT);
+ }
+
setbits_le32(&usbctlr->utmip_tx_cfg0, UTMIP_FS_PREAMBLE_J);
/* Disable battery charge enabling bit */
udelay(1);
}
if (!loop_count)
- return -1;
+ return -ETIMEDOUT;
/* Disable ICUSB FS/LS transceiver */
clrbits_le32(&usbctlr->icusb_ctrl, IC_ENB1);
int loop_count;
struct ulpi_viewport ulpi_vp;
struct usb_ctlr *usbctlr = config->reg;
+ int ret;
/* set up ULPI reference clock on pllp_out4 */
clock_enable(PERIPH_ID_DEV2_OUT);
/* reset ULPI phy */
if (dm_gpio_is_valid(&config->phy_reset_gpio)) {
- dm_gpio_set_value(&config->phy_reset_gpio, 0);
- mdelay(5);
+ /*
+ * This GPIO is typically active-low, and marked as such in
+ * device tree. dm_gpio_set_value() takes this into account
+ * and inverts the value we pass here if required. In other
+ * words, this first call logically asserts the reset signal,
+ * which typically results in driving the physical GPIO low,
+ * and the second call logically de-asserts the reset signal,
+ * which typically results in driver the GPIO high.
+ */
dm_gpio_set_value(&config->phy_reset_gpio, 1);
+ mdelay(5);
+ dm_gpio_set_value(&config->phy_reset_gpio, 0);
}
/* Reset the usb controller */
ulpi_vp.port_num = 0;
ulpi_vp.viewport_addr = (u32)&usbctlr->ulpi_viewport;
- if (ulpi_init(&ulpi_vp)) {
+ ret = ulpi_init(&ulpi_vp);
+ if (ret) {
printf("Tegra ULPI viewport init failed\n");
- return -1;
+ return ret;
}
ulpi_set_vbus(&ulpi_vp, 1, 1);
udelay(1);
}
if (!loop_count)
- return -1;
+ return -ETIMEDOUT;
clrbits_le32(&usbctlr->susp_ctrl, USB_SUSP_CLR);
return 0;
{
printf("No code to set up ULPI controller, please enable"
"CONFIG_USB_ULPI and CONFIG_USB_ULPI_VIEWPORT");
- return -1;
+ return -ENOSYS;
}
#endif
static void config_clock(const u32 timing[])
{
+ debug("%s: DIVM = %d, DIVN = %d, DIVP = %d, cpcon/lfcon = %d/%d\n",
+ __func__, timing[PARAM_DIVM], timing[PARAM_DIVN],
+ timing[PARAM_DIVP], timing[PARAM_CPCON], timing[PARAM_LFCON]);
+
clock_start_pll(CLOCK_ID_USB,
timing[PARAM_DIVM], timing[PARAM_DIVN], timing[PARAM_DIVP],
timing[PARAM_CPCON], timing[PARAM_LFCON]);
}
-static int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config)
+static int fdt_decode_usb(struct udevice *dev, struct fdt_usb *config)
{
const char *phy, *mode;
- config->reg = (struct usb_ctlr *)fdtdec_get_addr(blob, node, "reg");
- mode = fdt_getprop(blob, node, "dr_mode", NULL);
+ config->reg = (struct usb_ctlr *)dev_read_addr(dev);
+ debug("reg=%p\n", config->reg);
+ mode = dev_read_string(dev, "dr_mode");
if (mode) {
if (0 == strcmp(mode, "host"))
config->dr_mode = DR_MODE_HOST;
else {
debug("%s: Cannot decode dr_mode '%s'\n", __func__,
mode);
- return -FDT_ERR_NOTFOUND;
+ return -EINVAL;
}
} else {
config->dr_mode = DR_MODE_HOST;
}
- phy = fdt_getprop(blob, node, "phy_type", NULL);
+ phy = dev_read_string(dev, "phy_type");
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");
- if (config->has_legacy_mode)
- port_addr_clear_csc = (unsigned long)config->reg;
- config->periph_id = clock_decode_periph_id(blob, node);
+ config->has_legacy_mode = dev_read_bool(dev, "nvidia,has-legacy-mode");
+ config->periph_id = clock_decode_periph_id(dev);
if (config->periph_id == PERIPH_ID_NONE) {
debug("%s: Missing/invalid peripheral ID\n", __func__);
- return -FDT_ERR_NOTFOUND;
+ return -EINVAL;
}
- gpio_request_by_name_nodev(blob, node, "nvidia,vbus-gpio", 0,
- &config->vbus_gpio, GPIOD_IS_OUT);
- gpio_request_by_name_nodev(blob, node, "nvidia,phy-reset-gpio", 0,
- &config->phy_reset_gpio, GPIOD_IS_OUT);
- 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,
- gpio_get_number(&config->vbus_gpio),
- gpio_get_number(&config->phy_reset_gpio), config->dr_mode);
+ gpio_request_by_name(dev, "nvidia,vbus-gpio", 0, &config->vbus_gpio,
+ GPIOD_IS_OUT);
+ gpio_request_by_name(dev, "nvidia,phy-reset-gpio", 0,
+ &config->phy_reset_gpio, GPIOD_IS_OUT);
+ debug("legacy_mode=%d, utmi=%d, ulpi=%d, periph_id=%d, vbus=%d, phy_reset=%d, dr_mode=%d, reg=%p\n",
+ config->has_legacy_mode, config->utmi, config->ulpi,
+ config->periph_id, gpio_get_number(&config->vbus_gpio),
+ gpio_get_number(&config->phy_reset_gpio), config->dr_mode,
+ config->reg);
return 0;
}
-static const struct ehci_ops tegra_ehci_ops = {
- .set_usb_mode = tegra_ehci_set_usbmode,
- .get_port_speed = tegra_ehci_get_port_speed,
- .powerup_fixup = tegra_ehci_powerup_fixup,
-};
-
-/*
- * process_usb_nodes() - Process a list of USB nodes, adding them to our list
- * of USB ports.
- * @blob: fdt blob
- * @node_list: list of nodes to process (any <=0 are ignored)
- * @count: number of nodes to process
- * @id: controller type (enum usb_ctlr_type)
- *
- * Return: 0 - ok, -1 - error
- */
-static int process_usb_nodes(const void *blob, int node_list[], int count,
- enum usb_ctlr_type id)
+int usb_common_init(struct fdt_usb *config, enum usb_init_type init)
{
- struct fdt_usb config;
- int node, i;
- int clk_done = 0;
-
- port_count = 0;
- for (i = 0; i < count; i++) {
- if (port_count == USB_PORTS_MAX) {
- printf("tegrausb: Cannot register more than %d ports\n",
- USB_PORTS_MAX);
- return -1;
- }
-
- debug("USB %d: ", i);
- node = node_list[i];
- if (!node)
- continue;
- if (fdt_decode_usb(blob, node, &config)) {
- debug("Cannot decode USB node %s\n",
- fdt_get_name(blob, node, NULL));
- return -1;
- }
- if (!clk_done) {
- config_clock(get_pll_timing(
- &fdt_usb_controllers[id]));
- clk_done = 1;
- }
- config.type = id;
- config.initialized = 0;
-
- /* add new USB port to the list of available ports */
- port[port_count++] = config;
- }
-
- return 0;
-}
-
-int usb_process_devicetree(const void *blob)
-{
- int node_list[USB_PORTS_MAX];
- int count, err = 0;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(fdt_usb_controllers); i++) {
- count = fdtdec_find_aliases_for_id(blob, "usb",
- fdt_usb_controllers[i].compat, node_list,
- USB_PORTS_MAX);
- if (count) {
- err = process_usb_nodes(blob, node_list, count, i);
- if (err)
- printf("%s: Error processing USB node!\n",
- __func__);
- return err;
- }
- }
-
- return err;
-}
-
-/**
- * Start up the given port number (ports are numbered from 0 on each board).
- * This returns values for the appropriate hccr and hcor addresses to use for
- * USB EHCI operations.
- *
- * @param index port number to start
- * @param hccr returns start address of EHCI HCCR registers
- * @param hcor returns start address of EHCI HCOR registers
- * @return 0 if ok, -1 on error (generally invalid port number)
- */
-int ehci_hcd_init(int index, enum usb_init_type init,
- struct ehci_hccr **hccr, struct ehci_hcor **hcor)
-{
- struct fdt_usb *config;
- struct usb_ctlr *usbctlr;
-
- if (index >= port_count)
- return -1;
-
- config = &port[index];
- ehci_set_controller_priv(index, config, &tegra_ehci_ops);
+ int ret = 0;
switch (init) {
case USB_INIT_HOST:
return -1;
}
- /* skip init, if the port is already initialized */
- if (config->initialized && config->init_type == init)
- goto success;
-
- if (config->utmi && init_utmi_usb_controller(config, init)) {
- printf("tegrausb: Cannot init port %d\n", index);
- return -1;
- }
-
- if (config->ulpi && init_ulpi_usb_controller(config, init)) {
- printf("tegrausb: Cannot init port %d\n", index);
- return -1;
- }
+ debug("%d, %d\n", config->utmi, config->ulpi);
+ if (config->utmi)
+ ret = init_utmi_usb_controller(config, init);
+ else if (config->ulpi)
+ ret = init_ulpi_usb_controller(config, init);
+ if (ret)
+ return ret;
set_up_vbus(config, init);
- config->initialized = 1;
config->init_type = init;
-success:
- usbctlr = config->reg;
- *hccr = (struct ehci_hccr *)&usbctlr->cap_length;
- *hcor = (struct ehci_hcor *)&usbctlr->usb_cmd;
-
return 0;
}
-/*
- * Bring down the specified USB controller
- */
-int ehci_hcd_stop(int index)
+void usb_common_uninit(struct fdt_usb *priv)
{
struct usb_ctlr *usbctlr;
- usbctlr = port[index].reg;
+ usbctlr = priv->reg;
/* Stop controller */
writel(0, &usbctlr->usb_cmd);
/* Initiate controller reset */
writel(2, &usbctlr->usb_cmd);
udelay(1000);
+}
+
+static const struct ehci_ops tegra_ehci_ops = {
+ .set_usb_mode = tegra_ehci_set_usbmode,
+ .get_port_speed = tegra_ehci_get_port_speed,
+ .powerup_fixup = tegra_ehci_powerup_fixup,
+};
+
+static int ehci_usb_ofdata_to_platdata(struct udevice *dev)
+{
+ struct fdt_usb *priv = dev_get_priv(dev);
+ int ret;
- port[index].initialized = 0;
+ ret = fdt_decode_usb(dev, priv);
+ if (ret)
+ return ret;
+
+ priv->type = dev_get_driver_data(dev);
return 0;
}
+
+static int ehci_usb_probe(struct udevice *dev)
+{
+ struct usb_platdata *plat = dev_get_platdata(dev);
+ struct fdt_usb *priv = dev_get_priv(dev);
+ struct ehci_hccr *hccr;
+ struct ehci_hcor *hcor;
+ static bool clk_done;
+ int ret;
+
+ ret = usb_common_init(priv, plat->init_type);
+ if (ret)
+ return ret;
+ hccr = (struct ehci_hccr *)&priv->reg->cap_length;
+ hcor = (struct ehci_hcor *)&priv->reg->usb_cmd;
+ if (!clk_done) {
+ config_clock(get_pll_timing(&fdt_usb_controllers[priv->type]));
+ clk_done = true;
+ }
+
+ return ehci_register(dev, hccr, hcor, &tegra_ehci_ops, 0,
+ plat->init_type);
+}
+
+static const struct udevice_id ehci_usb_ids[] = {
+ { .compatible = "nvidia,tegra20-ehci", .data = USB_CTLR_T20 },
+ { .compatible = "nvidia,tegra30-ehci", .data = USB_CTLR_T30 },
+ { .compatible = "nvidia,tegra114-ehci", .data = USB_CTLR_T114 },
+ { .compatible = "nvidia,tegra210-ehci", .data = USB_CTLR_T210 },
+ { }
+};
+
+U_BOOT_DRIVER(usb_ehci) = {
+ .name = "ehci_tegra",
+ .id = UCLASS_USB,
+ .of_match = ehci_usb_ids,
+ .ofdata_to_platdata = ehci_usb_ofdata_to_platdata,
+ .probe = ehci_usb_probe,
+ .remove = ehci_deregister,
+ .ops = &ehci_usb_ops,
+ .platdata_auto_alloc_size = sizeof(struct usb_platdata),
+ .priv_auto_alloc_size = sizeof(struct fdt_usb),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
projects / u-boot / blobdiff