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/*
* (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
*
* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
*
* Author: Tor Krill tor@excito.com
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <usb.h>
#include <asm/io.h>
#include <hwconfig.h>
#include <fsl_errata.h>
#include <fsl_usb.h>
#include <fdt_support.h>
#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
#endif
/* USB Controllers */
#define FSL_USB2_MPH "fsl-usb2-mph"
#define FSL_USB2_DR "fsl-usb2-dr"
#define CHIPIDEA_USB2 "chipidea,usb2"
#define SNPS_DWC3 "snps,dwc3"
static const char * const compat_usb_fsl[] = {
FSL_USB2_MPH,
FSL_USB2_DR,
SNPS_DWC3,
NULL
};
static int fdt_usb_get_node_type(void *blob, int start_offset,
int *node_offset, const char **node_type)
{
int i;
int ret = -ENOENT;
for (i = 0; compat_usb_fsl[i]; i++) {
*node_offset = fdt_node_offset_by_compatible
(blob, start_offset,
compat_usb_fsl[i]);
if (*node_offset >= 0) {
*node_type = compat_usb_fsl[i];
ret = 0;
break;
}
}
return ret;
}
static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
const char *phy_type, int start_offset)
{
const char *prop_mode = "dr_mode";
const char *prop_type = "phy_type";
const char *node_type = NULL;
int node_offset;
int err;
err = fdt_usb_get_node_type(blob, start_offset,
&node_offset, &node_type);
if (err < 0)
return err;
if (mode) {
err = fdt_setprop(blob, node_offset, prop_mode, mode,
strlen(mode) + 1);
if (err < 0)
printf("WARNING: could not set %s for %s: %s.\n",
prop_mode, node_type, fdt_strerror(err));
}
if (phy_type) {
err = fdt_setprop(blob, node_offset, prop_type, phy_type,
strlen(phy_type) + 1);
if (err < 0)
printf("WARNING: could not set %s for %s: %s.\n",
prop_type, node_type, fdt_strerror(err));
}
return node_offset;
}
static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
const char *controller_type, int start_offset)
{
int node_offset, err;
const char *node_type = NULL;
const char *node_name = NULL;
err = fdt_usb_get_node_type(blob, start_offset,
&node_offset, &node_type);
if (err < 0)
return err;
if (!strcmp(node_type, FSL_USB2_MPH) || !strcmp(node_type, FSL_USB2_DR))
node_name = CHIPIDEA_USB2;
else
node_name = node_type;
if (strcmp(node_name, controller_type))
return err;
err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0);
if (err < 0) {
printf("ERROR: could not set %s for %s: %s.\n",
prop_erratum, node_type, fdt_strerror(err));
}
return node_offset;
}
static int fdt_fixup_erratum(int *usb_erratum_off, void *blob,
const char *controller_type, char *str,
bool (*has_erratum)(void))
{
char buf[32] = {0};
snprintf(buf, sizeof(buf), "fsl,usb-erratum-%s", str);
if (!has_erratum())
return -EINVAL;
*usb_erratum_off = fdt_fixup_usb_erratum(blob, buf, controller_type,
*usb_erratum_off);
if (*usb_erratum_off < 0)
return -ENOSPC;
debug("Adding USB erratum %s\n", str);
return 0;
}
void fdt_fixup_dr_usb(void *blob, bd_t *bd)
{
static const char * const modes[] = { "host", "peripheral", "otg" };
static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
int usb_erratum_a006261_off = -1;
int usb_erratum_a007075_off = -1;
int usb_erratum_a007792_off = -1;
int usb_erratum_a005697_off = -1;
int usb_erratum_a008751_off = -1;
int usb_mode_off = -1;
int usb_phy_off = -1;
char str[5];
int i, j;
int ret;
for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
const char *dr_mode_type = NULL;
const char *dr_phy_type = NULL;
int mode_idx = -1, phy_idx = -1;
snprintf(str, 5, "%s%d", "usb", i);
if (hwconfig(str)) {
for (j = 0; j < ARRAY_SIZE(modes); j++) {
if (hwconfig_subarg_cmp(str, "dr_mode",
modes[j])) {
mode_idx = j;
break;
}
}
for (j = 0; j < ARRAY_SIZE(phys); j++) {
if (hwconfig_subarg_cmp(str, "phy_type",
phys[j])) {
phy_idx = j;
break;
}
}
if (mode_idx < 0 && phy_idx < 0) {
printf("WARNING: invalid phy or mode\n");
return;
}
if (mode_idx > -1)
dr_mode_type = modes[mode_idx];
if (phy_idx > -1)
dr_phy_type = phys[phy_idx];
}
if (has_dual_phy())
dr_phy_type = phys[2];
usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
dr_mode_type, NULL,
usb_mode_off);
if (usb_mode_off < 0)
return;
usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
NULL, dr_phy_type,
usb_phy_off);
if (usb_phy_off < 0)
return;
ret = fdt_fixup_erratum(&usb_erratum_a006261_off, blob,
CHIPIDEA_USB2, "a006261",
has_erratum_a006261);
if (ret == -ENOSPC)
return;
ret = fdt_fixup_erratum(&usb_erratum_a007075_off, blob,
CHIPIDEA_USB2, "a007075",
has_erratum_a007075);
if (ret == -ENOSPC)
return;
ret = fdt_fixup_erratum(&usb_erratum_a007792_off, blob,
CHIPIDEA_USB2, "a007792",
has_erratum_a007792);
if (ret == -ENOSPC)
return;
ret = fdt_fixup_erratum(&usb_erratum_a005697_off, blob,
CHIPIDEA_USB2, "a005697",
has_erratum_a005697);
if (ret == -ENOSPC)
return;
ret = fdt_fixup_erratum(&usb_erratum_a008751_off, blob,
SNPS_DWC3, "a008751",
has_erratum_a008751);
if (ret == -ENOSPC)
return;
}
}
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