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-rw-r--r--drivers/usb/host/ehci-tegra.c304
1 files changed, 268 insertions, 36 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 554145a250..a9603bc104 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -1,6 +1,6 @@
/*
* Copyright (c) 2011 The Chromium OS Authors.
- * Copyright (c) 2009-2012 NVIDIA Corporation
+ * Copyright (c) 2009-2013 NVIDIA Corporation
* Copyright (c) 2013 Lucas Stach
*
* See file CREDITS for list of people who contributed to this
@@ -28,6 +28,8 @@
#include <asm-generic/gpio.h>
#include <asm/arch/clock.h>
#include <asm/arch-tegra/usb.h>
+#include <asm/arch-tegra/clk_rst.h>
+#include <asm/arch/usb.h>
#include <usb.h>
#include <usb/ulpi.h>
#include <libfdt.h>
@@ -35,6 +37,11 @@
#include "ehci.h"
+#define USB1_ADDR_MASK 0xFFFF0000
+
+#define HOSTPC1_DEVLC 0x84
+#define HOSTPC1_PSPD(x) (((x) >> 25) & 0x3)
+
#ifdef CONFIG_USB_ULPI
#ifndef CONFIG_USB_ULPI_VIEWPORT
#error "To use CONFIG_USB_ULPI on Tegra Boards you have to also \
@@ -87,6 +94,8 @@ struct fdt_usb {
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
@@ -129,7 +138,7 @@ static unsigned port_count; /* Number of available ports */
*
* 4. The 20 microsecond delay after bias cell operation.
*/
-static const unsigned usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
+static const unsigned T20_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
/* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
{ 0x3C0, 0x0D, 0x00, 0xC, 0, 0x02, 0x33, 0x05, 0x7F, 0x7EF4, 5 },
{ 0x0C8, 0x04, 0x00, 0x3, 0, 0x03, 0x4B, 0x06, 0xBB, 0xBB80, 7 },
@@ -137,6 +146,22 @@ static const unsigned usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
{ 0x3C0, 0x1A, 0x00, 0xC, 0, 0x04, 0x66, 0x09, 0xFE, 0xFDE8, 9 }
};
+static const unsigned T30_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
+ /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
+ { 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 }
+};
+
+static const unsigned T114_usb_pll[CLOCK_OSC_FREQ_COUNT][PARAM_COUNT] = {
+ /* DivN, DivM, DivP, CPCON, LFCON, Delays Debounce, Bias */
+ { 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 }
+};
+
/* UTMIP Idle Wait Delay */
static const u8 utmip_idle_wait_delay = 17;
@@ -146,6 +171,33 @@ static const u8 utmip_elastic_limit = 16;
/* UTMIP High Speed Sync Start 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[] = {
+ {
+ .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,
+ },
+};
+
+static struct fdt_usb_controller *controller;
+
/*
* A known hardware issue where Connect Status Change bit of PORTSC register
* of USB1 controller will be set after Port Reset.
@@ -156,13 +208,52 @@ static const u8 utmip_hs_sync_start_delay = 9;
void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg)
{
mdelay(50);
- if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE)
+ /* This is to avoid PORT_ENABLE bit to be cleared in "ehci-hcd.c". */
+ if (controller->has_hostpc)
+ *reg |= EHCI_PS_PE;
+
+ if (((u32)status_reg & TEGRA_USB_ADDR_MASK) != port_addr_clear_csc)
return;
/* For EHCI_PS_CSC to be cleared in ehci_hcd.c */
if (ehci_readl(status_reg) & EHCI_PS_CSC)
*reg |= EHCI_PS_CSC;
}
+/*
+ * This ehci_set_usbmode overrides the weak function ehci_set_usbmode
+ * in "ehci-hcd.c".
+ */
+void ehci_set_usbmode(int index)
+{
+ struct fdt_usb *config;
+ struct usb_ctlr *usbctlr;
+ uint32_t tmp;
+
+ config = &port[index];
+ usbctlr = config->reg;
+
+ tmp = ehci_readl(&usbctlr->usb_mode);
+ tmp |= USBMODE_CM_HC;
+ ehci_writel(&usbctlr->usb_mode, tmp);
+}
+
+/*
+ * This ehci_get_port_speed overrides the weak function ehci_get_port_speed
+ * in "ehci-hcd.c".
+ */
+int ehci_get_port_speed(struct ehci_hcor *hcor, uint32_t reg)
+{
+ uint32_t tmp;
+ uint32_t *reg_ptr;
+
+ if (controller->has_hostpc) {
+ reg_ptr = (uint32_t *)((u8 *)&hcor->or_usbcmd + HOSTPC1_DEVLC);
+ tmp = ehci_readl(reg_ptr);
+ return HOSTPC1_PSPD(tmp);
+ } else
+ return PORTSC_PSPD(reg);
+}
+
/* Put the port into host mode */
static void set_host_mode(struct fdt_usb *config)
{
@@ -209,6 +300,16 @@ void usbf_reset_controller(struct fdt_usb *config, struct usb_ctlr *usbctlr)
setbits_le32(&usbctlr->susp_ctrl, UTMIP_PHY_ENB);
}
+static const unsigned *get_pll_timing(void)
+{
+ const unsigned *timing;
+
+ timing = controller->pll_parameter +
+ clock_get_osc_freq() * PARAM_COUNT;
+
+ return timing;
+}
+
/* set up the UTMI USB controller with the parameters provided */
static int init_utmi_usb_controller(struct fdt_usb *config)
{
@@ -216,6 +317,8 @@ static int init_utmi_usb_controller(struct fdt_usb *config)
int loop_count;
const unsigned *timing;
struct usb_ctlr *usbctlr = config->reg;
+ struct clk_rst_ctlr *clkrst;
+ struct usb_ctlr *usb1ctlr;
clock_enable(config->periph_id);
@@ -232,35 +335,97 @@ static int init_utmi_usb_controller(struct fdt_usb *config)
* To Use the A Session Valid for cable detection logic, VBUS_WAKEUP
* mux must be switched to actually use a_sess_vld threshold.
*/
- if (fdt_gpio_isvalid(&config->vbus_gpio)) {
+ if (config->dr_mode == DR_MODE_OTG &&
+ fdt_gpio_isvalid(&config->vbus_gpio))
clrsetbits_le32(&usbctlr->usb1_legacy_ctrl,
VBUS_SENSE_CTL_MASK,
VBUS_SENSE_CTL_A_SESS_VLD << VBUS_SENSE_CTL_SHIFT);
- }
/*
* PLL Delay CONFIGURATION settings. The following parameters control
* the bring up of the plls.
*/
- timing = usb_pll[clock_get_osc_freq()];
-
- val = readl(&usbctlr->utmip_misc_cfg1);
- clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
- timing[PARAM_STABLE_COUNT] << UTMIP_PLLU_STABLE_COUNT_SHIFT);
- clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
- timing[PARAM_ACTIVE_DELAY_COUNT] <<
- UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
- writel(val, &usbctlr->utmip_misc_cfg1);
-
- /* Set PLL enable delay count and crystal frequency count */
- val = readl(&usbctlr->utmip_pll_cfg1);
- clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
- timing[PARAM_ENABLE_DELAY_COUNT] <<
- UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
- clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
- timing[PARAM_XTAL_FREQ_COUNT] <<
- UTMIP_XTAL_FREQ_COUNT_SHIFT);
- writel(val, &usbctlr->utmip_pll_cfg1);
+ timing = get_pll_timing();
+
+ if (!controller->has_hostpc) {
+ val = readl(&usbctlr->utmip_misc_cfg1);
+ clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
+ timing[PARAM_STABLE_COUNT] <<
+ UTMIP_PLLU_STABLE_COUNT_SHIFT);
+ clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
+ timing[PARAM_ACTIVE_DELAY_COUNT] <<
+ UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
+ writel(val, &usbctlr->utmip_misc_cfg1);
+
+ /* Set PLL enable delay count and crystal frequency count */
+ val = readl(&usbctlr->utmip_pll_cfg1);
+ clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
+ timing[PARAM_ENABLE_DELAY_COUNT] <<
+ UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
+ clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
+ timing[PARAM_XTAL_FREQ_COUNT] <<
+ UTMIP_XTAL_FREQ_COUNT_SHIFT);
+ writel(val, &usbctlr->utmip_pll_cfg1);
+ } else {
+ clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
+
+ val = readl(&clkrst->crc_utmip_pll_cfg2);
+ clrsetbits_le32(&val, UTMIP_PLLU_STABLE_COUNT_MASK,
+ timing[PARAM_STABLE_COUNT] <<
+ UTMIP_PLLU_STABLE_COUNT_SHIFT);
+ clrsetbits_le32(&val, UTMIP_PLL_ACTIVE_DLY_COUNT_MASK,
+ timing[PARAM_ACTIVE_DELAY_COUNT] <<
+ UTMIP_PLL_ACTIVE_DLY_COUNT_SHIFT);
+ writel(val, &clkrst->crc_utmip_pll_cfg2);
+
+ /* Set PLL enable delay count and crystal frequency count */
+ val = readl(&clkrst->crc_utmip_pll_cfg1);
+ clrsetbits_le32(&val, UTMIP_PLLU_ENABLE_DLY_COUNT_MASK,
+ timing[PARAM_ENABLE_DELAY_COUNT] <<
+ UTMIP_PLLU_ENABLE_DLY_COUNT_SHIFT);
+ clrsetbits_le32(&val, UTMIP_XTAL_FREQ_COUNT_MASK,
+ timing[PARAM_XTAL_FREQ_COUNT] <<
+ UTMIP_XTAL_FREQ_COUNT_SHIFT);
+ writel(val, &clkrst->crc_utmip_pll_cfg1);
+
+ /* Disable Power Down state for PLL */
+ clrbits_le32(&clkrst->crc_utmip_pll_cfg1,
+ PLLU_POWERDOWN | PLL_ENABLE_POWERDOWN |
+ PLL_ACTIVE_POWERDOWN);
+
+ /* Recommended PHY settings for EYE diagram */
+ val = readl(&usbctlr->utmip_xcvr_cfg0);
+ clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MASK,
+ 0x4 << UTMIP_XCVR_SETUP_SHIFT);
+ clrsetbits_le32(&val, UTMIP_XCVR_SETUP_MSB_MASK,
+ 0x3 << UTMIP_XCVR_SETUP_MSB_SHIFT);
+ clrsetbits_le32(&val, UTMIP_XCVR_HSSLEW_MSB_MASK,
+ 0x8 << UTMIP_XCVR_HSSLEW_MSB_SHIFT);
+ writel(val, &usbctlr->utmip_xcvr_cfg0);
+ clrsetbits_le32(&usbctlr->utmip_xcvr_cfg1,
+ UTMIP_XCVR_TERM_RANGE_ADJ_MASK,
+ 0x7 << UTMIP_XCVR_TERM_RANGE_ADJ_SHIFT);
+
+ /* Some registers can be controlled from USB1 only. */
+ if (config->periph_id != PERIPH_ID_USBD) {
+ clock_enable(PERIPH_ID_USBD);
+ /* Disable Reset if in Reset state */
+ reset_set_enable(PERIPH_ID_USBD, 0);
+ }
+ usb1ctlr = (struct usb_ctlr *)
+ ((u32)config->reg & USB1_ADDR_MASK);
+ val = readl(&usb1ctlr->utmip_bias_cfg0);
+ setbits_le32(&val, UTMIP_HSDISCON_LEVEL_MSB);
+ clrsetbits_le32(&val, UTMIP_HSDISCON_LEVEL_MASK,
+ 0x1 << UTMIP_HSDISCON_LEVEL_SHIFT);
+ clrsetbits_le32(&val, UTMIP_HSSQUELCH_LEVEL_MASK,
+ 0x2 << UTMIP_HSSQUELCH_LEVEL_SHIFT);
+ writel(val, &usb1ctlr->utmip_bias_cfg0);
+
+ /* Miscellaneous setting mentioned in Programming Guide */
+ clrbits_le32(&usbctlr->utmip_misc_cfg0,
+ UTMIP_SUSPEND_EXIT_ON_EDGE);
+ }
/* Setting the tracking length time */
clrsetbits_le32(&usbctlr->utmip_bias_cfg1,
@@ -308,6 +473,14 @@ static int init_utmi_usb_controller(struct fdt_usb *config)
/* Resuscitate crystal clock by setting UTMIP_PHY_XTAL_CLOCKEN */
setbits_le32(&usbctlr->utmip_misc_cfg1, UTMIP_PHY_XTAL_CLOCKEN);
+ if (controller->has_hostpc) {
+ if (config->periph_id == PERIPH_ID_USBD)
+ clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
+ UTMIP_FORCE_PD_SAMP_A_POWERDOWN);
+ if (config->periph_id == PERIPH_ID_USB3)
+ clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
+ UTMIP_FORCE_PD_SAMP_C_POWERDOWN);
+ }
/* Finished the per-controller init. */
/* De-assert UTMIP_RESET to bring out of reset. */
@@ -336,6 +509,18 @@ static int init_utmi_usb_controller(struct fdt_usb *config)
clrbits_le32(&usbctlr->utmip_xcvr_cfg1, UTMIP_FORCE_PDDISC_POWERDOWN |
UTMIP_FORCE_PDCHRP_POWERDOWN | UTMIP_FORCE_PDDR_POWERDOWN);
+ if (controller->has_hostpc) {
+ /*
+ * BIAS Pad Power Down is common among all 3 USB
+ * controllers and can be controlled from USB1 only.
+ */
+ usb1ctlr = (struct usb_ctlr *)
+ ((u32)config->reg & USB1_ADDR_MASK);
+ clrbits_le32(&usb1ctlr->utmip_bias_cfg0, UTMIP_BIASPD);
+ udelay(25);
+ clrbits_le32(&usb1ctlr->utmip_bias_cfg1,
+ UTMIP_FORCE_PDTRK_POWERDOWN);
+ }
return 0;
}
@@ -438,7 +623,7 @@ static void config_clock(const u32 timing[])
timing[PARAM_CPCON], timing[PARAM_LFCON]);
}
-int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config)
+static int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config)
{
const char *phy, *mode;
@@ -466,6 +651,8 @@ int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config)
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 = (u32) config->reg;
config->periph_id = clock_decode_periph_id(blob, node);
if (config->periph_id == PERIPH_ID_NONE) {
debug("%s: Missing/invalid peripheral ID\n", __func__);
@@ -483,20 +670,22 @@ int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config)
return 0;
}
-int board_usb_init(const void *blob)
+/*
+ * 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
+ *
+ * Return: 0 - ok, -1 - error
+ */
+static int process_usb_nodes(const void *blob, int node_list[], int count)
{
struct fdt_usb config;
- enum clock_osc_freq freq;
- int node_list[USB_PORTS_MAX];
- int node, count, i;
-
- /* Set up the USB clocks correctly based on our oscillator frequency */
- freq = clock_get_osc_freq();
- config_clock(usb_pll[freq]);
+ int node, i;
+ int clk_done = 0;
- /* count may return <0 on error */
- count = fdtdec_find_aliases_for_id(blob, "usb",
- COMPAT_NVIDIA_TEGRA20_USB, node_list, USB_PORTS_MAX);
+ port_count = 0;
for (i = 0; i < count; i++) {
if (port_count == USB_PORTS_MAX) {
printf("tegrausb: Cannot register more than %d ports\n",
@@ -513,6 +702,10 @@ int board_usb_init(const void *blob)
fdt_get_name(blob, node, NULL));
return -1;
}
+ if (!clk_done) {
+ config_clock(get_pll_timing());
+ clk_done = 1;
+ }
config.initialized = 0;
/* add new USB port to the list of available ports */
@@ -522,6 +715,31 @@ int board_usb_init(const void *blob)
return 0;
}
+int board_usb_init(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++) {
+ controller = &fdt_usb_controllers[i];
+
+ count = fdtdec_find_aliases_for_id(blob, "usb",
+ controller->compat, node_list, USB_PORTS_MAX);
+ if (count) {
+ err = process_usb_nodes(blob, node_list, count);
+ if (err)
+ printf("%s: Error processing USB node!\n",
+ __func__);
+ return err;
+ }
+ }
+ if (i == ARRAY_SIZE(fdt_usb_controllers))
+ controller = NULL;
+
+ 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
@@ -564,6 +782,20 @@ success:
usbctlr = config->reg;
*hccr = (struct ehci_hccr *)&usbctlr->cap_length;
*hcor = (struct ehci_hcor *)&usbctlr->usb_cmd;
+
+ if (controller->has_hostpc) {
+ /* Set to Host mode after Controller Reset was done */
+ clrsetbits_le32(&usbctlr->usb_mode, USBMODE_CM_HC,
+ USBMODE_CM_HC);
+ /* Select UTMI parallel interface after setting host mode */
+ if (config->utmi) {
+ clrsetbits_le32((char *)&usbctlr->usb_cmd +
+ HOSTPC1_DEVLC, PTS_MASK,
+ PTS_UTMI << PTS_SHIFT);
+ clrbits_le32((char *)&usbctlr->usb_cmd +
+ HOSTPC1_DEVLC, STS);
+ }
+ }
return 0;
}
generated by cgit (git 2.34.1) at 2024-12-24 20:09:44 +0000