1 /* 2 * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc. 3 * 4 * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB 5 * 6 * Author: Tor Krill tor@excito.com 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <common.h> 12 #include <usb.h> 13 #include <asm/io.h> 14 #include <hwconfig.h> 15 #include <fsl_usb.h> 16 #include <fdt_support.h> 17 18 #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT 19 #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 20 #endif 21 22 static const char * const compat_usb_fsl[] = { 23 "fsl-usb2-mph", 24 "fsl-usb2-dr", 25 "snps,dwc3", 26 NULL 27 }; 28 29 static int fdt_usb_get_node_type(void *blob, int start_offset, 30 int *node_offset, const char **node_type) 31 { 32 int i; 33 int ret = -ENOENT; 34 35 for (i = 0; compat_usb_fsl[i]; i++) { 36 *node_offset = fdt_node_offset_by_compatible 37 (blob, start_offset, 38 compat_usb_fsl[i]); 39 if (*node_offset >= 0) { 40 *node_type = compat_usb_fsl[i]; 41 ret = 0; 42 break; 43 } 44 } 45 46 return ret; 47 } 48 49 static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode, 50 const char *phy_type, int start_offset) 51 { 52 const char *prop_mode = "dr_mode"; 53 const char *prop_type = "phy_type"; 54 const char *node_type = NULL; 55 int node_offset; 56 int err; 57 58 err = fdt_usb_get_node_type(blob, start_offset, 59 &node_offset, &node_type); 60 if (err < 0) 61 return err; 62 63 if (mode) { 64 err = fdt_setprop(blob, node_offset, prop_mode, mode, 65 strlen(mode) + 1); 66 if (err < 0) 67 printf("WARNING: could not set %s for %s: %s.\n", 68 prop_mode, node_type, fdt_strerror(err)); 69 } 70 71 if (phy_type) { 72 err = fdt_setprop(blob, node_offset, prop_type, phy_type, 73 strlen(phy_type) + 1); 74 if (err < 0) 75 printf("WARNING: could not set %s for %s: %s.\n", 76 prop_type, node_type, fdt_strerror(err)); 77 } 78 79 return node_offset; 80 } 81 82 static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum, 83 int start_offset) 84 { 85 int node_offset, err; 86 const char *node_type = NULL; 87 88 err = fdt_usb_get_node_type(blob, start_offset, 89 &node_offset, &node_type); 90 if (err < 0) 91 return err; 92 93 err = fdt_setprop(blob, node_offset, prop_erratum, NULL, 0); 94 if (err < 0) { 95 printf("ERROR: could not set %s for %s: %s.\n", 96 prop_erratum, node_type, fdt_strerror(err)); 97 } 98 99 return node_offset; 100 } 101 102 void fdt_fixup_dr_usb(void *blob, bd_t *bd) 103 { 104 static const char * const modes[] = { "host", "peripheral", "otg" }; 105 static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" }; 106 int usb_erratum_a006261_off = -1; 107 int usb_erratum_a007075_off = -1; 108 int usb_erratum_a007792_off = -1; 109 int usb_erratum_a005697_off = -1; 110 int usb_mode_off = -1; 111 int usb_phy_off = -1; 112 char str[5]; 113 int i, j; 114 115 for (i = 1; i <= CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { 116 const char *dr_mode_type = NULL; 117 const char *dr_phy_type = NULL; 118 int mode_idx = -1, phy_idx = -1; 119 120 snprintf(str, 5, "%s%d", "usb", i); 121 if (hwconfig(str)) { 122 for (j = 0; j < ARRAY_SIZE(modes); j++) { 123 if (hwconfig_subarg_cmp(str, "dr_mode", 124 modes[j])) { 125 mode_idx = j; 126 break; 127 } 128 } 129 130 for (j = 0; j < ARRAY_SIZE(phys); j++) { 131 if (hwconfig_subarg_cmp(str, "phy_type", 132 phys[j])) { 133 phy_idx = j; 134 break; 135 } 136 } 137 138 if (mode_idx < 0 && phy_idx < 0) { 139 printf("WARNING: invalid phy or mode\n"); 140 return; 141 } 142 143 if (mode_idx > -1) 144 dr_mode_type = modes[mode_idx]; 145 146 if (phy_idx > -1) 147 dr_phy_type = phys[phy_idx]; 148 } 149 150 if (has_dual_phy()) 151 dr_phy_type = phys[2]; 152 153 usb_mode_off = fdt_fixup_usb_mode_phy_type(blob, 154 dr_mode_type, NULL, 155 usb_mode_off); 156 157 if (usb_mode_off < 0) 158 return; 159 160 usb_phy_off = fdt_fixup_usb_mode_phy_type(blob, 161 NULL, dr_phy_type, 162 usb_phy_off); 163 164 if (usb_phy_off < 0) 165 return; 166 167 if (has_erratum_a006261()) { 168 usb_erratum_a006261_off = fdt_fixup_usb_erratum 169 (blob, 170 "fsl,usb-erratum-a006261", 171 usb_erratum_a006261_off); 172 if (usb_erratum_a006261_off < 0) 173 return; 174 } 175 176 if (has_erratum_a007075()) { 177 usb_erratum_a007075_off = fdt_fixup_usb_erratum 178 (blob, 179 "fsl,usb-erratum-a007075", 180 usb_erratum_a007075_off); 181 if (usb_erratum_a007075_off < 0) 182 return; 183 } 184 185 if (has_erratum_a007792()) { 186 usb_erratum_a007792_off = fdt_fixup_usb_erratum 187 (blob, 188 "fsl,usb-erratum-a007792", 189 usb_erratum_a007792_off); 190 if (usb_erratum_a007792_off < 0) 191 return; 192 } 193 if (has_erratum_a005697()) { 194 usb_erratum_a005697_off = fdt_fixup_usb_erratum 195 (blob, 196 "fsl,usb-erratum-a005697", 197 usb_erratum_a005697_off); 198 if (usb_erratum_a005697_off < 0) 199 return; 200 } 201 } 202 } 203