1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
5 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
7 * Author: Tor Krill tor@excito.com
14 #include <fsl_errata.h>
16 #include <fdt_support.h>
18 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
19 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1
23 #define FSL_USB2_MPH "fsl-usb2-mph"
24 #define FSL_USB2_DR "fsl-usb2-dr"
25 #define CHIPIDEA_USB2 "chipidea,usb2"
26 #define SNPS_DWC3 "snps,dwc3"
28 static const char * const compat_usb_fsl[] = {
35 static int fdt_usb_get_node_type(void *blob, int start_offset,
36 int *node_offset, const char **node_type)
41 for (i = 0; compat_usb_fsl[i]; i++) {
42 *node_offset = fdt_node_offset_by_compatible
45 if (*node_offset >= 0) {
46 *node_type = compat_usb_fsl[i];
55 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode,
56 const char *phy_type, int start_offset)
58 const char *prop_mode = "dr_mode";
59 const char *prop_type = "phy_type";
60 const char *node_type = NULL;
64 err = fdt_usb_get_node_type(blob, start_offset,
65 &node_offset, &node_type);
70 err = fdt_setprop(blob, node_offset, prop_mode, mode,
73 printf("WARNING: could not set %s for %s: %s.\n",
74 prop_mode, node_type, fdt_strerror(err));
78 err = fdt_setprop(blob, node_offset, prop_type, phy_type,
79 strlen(phy_type) + 1);
81 printf("WARNING: could not set %s for %s: %s.\n",
82 prop_type, node_type, fdt_strerror(err));
88 static int fsl_fdt_fixup_usb_erratum(void *blob, const char *prop_erratum,
89 const char *controller_type,
93 const char *node_type = NULL;
94 const char *node_name = NULL;
96 err = fdt_usb_get_node_type(blob, start_offset,
97 &node_offset, &node_type);
101 if (!strcmp(node_type, FSL_USB2_MPH) || !strcmp(node_type, FSL_USB2_DR))
102 node_name = CHIPIDEA_USB2;
104 node_name = node_type;
105 if (strcmp(node_name, controller_type))
108 err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0);
110 printf("ERROR: could not set %s for %s: %s.\n",
111 prop_erratum, node_type, fdt_strerror(err));
117 static int fsl_fdt_fixup_erratum(int *usb_erratum_off, void *blob,
118 const char *controller_type, char *str,
119 bool (*has_erratum)(void))
123 snprintf(buf, sizeof(buf), "fsl,usb-erratum-%s", str);
126 *usb_erratum_off = fsl_fdt_fixup_usb_erratum(blob, buf, controller_type,
128 if (*usb_erratum_off < 0)
130 debug("Adding USB erratum %s\n", str);
134 void fsl_fdt_fixup_dr_usb(void *blob, bd_t *bd)
136 static const char * const modes[] = { "host", "peripheral", "otg" };
137 static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
138 int usb_erratum_a006261_off = -1;
139 int usb_erratum_a007075_off = -1;
140 int usb_erratum_a007792_off = -1;
141 int usb_erratum_a005697_off = -1;
142 int usb_erratum_a008751_off = -1;
143 int usb_mode_off = -1;
144 int usb_phy_off = -1;
149 for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
150 const char *dr_mode_type = NULL;
151 const char *dr_phy_type = NULL;
152 int mode_idx = -1, phy_idx = -1;
154 snprintf(str, 5, "%s%d", "usb", i);
156 for (j = 0; j < ARRAY_SIZE(modes); j++) {
157 if (hwconfig_subarg_cmp(str, "dr_mode",
164 for (j = 0; j < ARRAY_SIZE(phys); j++) {
165 if (hwconfig_subarg_cmp(str, "phy_type",
172 if (mode_idx < 0 && phy_idx < 0) {
173 printf("WARNING: invalid phy or mode\n");
178 dr_mode_type = modes[mode_idx];
181 dr_phy_type = phys[phy_idx];
185 dr_phy_type = phys[2];
187 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
191 if (usb_mode_off < 0)
194 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob,
201 ret = fsl_fdt_fixup_erratum(&usb_erratum_a006261_off, blob,
202 CHIPIDEA_USB2, "a006261",
203 has_erratum_a006261);
206 ret = fsl_fdt_fixup_erratum(&usb_erratum_a007075_off, blob,
207 CHIPIDEA_USB2, "a007075",
208 has_erratum_a007075);
211 ret = fsl_fdt_fixup_erratum(&usb_erratum_a007792_off, blob,
212 CHIPIDEA_USB2, "a007792",
213 has_erratum_a007792);
216 ret = fsl_fdt_fixup_erratum(&usb_erratum_a005697_off, blob,
217 CHIPIDEA_USB2, "a005697",
218 has_erratum_a005697);
221 ret = fsl_fdt_fixup_erratum(&usb_erratum_a008751_off, blob,
222 SNPS_DWC3, "a008751",
223 has_erratum_a008751);