/* * (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 #include #include #include #include #include #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 #endif static int fdt_fixup_usb_mode_phy_type(void *blob, const char *mode, const char *phy_type, int start_offset) { const char *compat_dr = "fsl-usb2-dr"; const char *compat_mph = "fsl-usb2-mph"; const char *prop_mode = "dr_mode"; const char *prop_type = "phy_type"; const char *node_type = NULL; int node_offset; int err; node_offset = fdt_node_offset_by_compatible(blob, start_offset, compat_mph); if (node_offset < 0) { node_offset = fdt_node_offset_by_compatible(blob, start_offset, compat_dr); if (node_offset < 0) { printf("WARNING: could not find compatible node: %s", fdt_strerror(node_offset)); return -1; } node_type = compat_dr; } else { node_type = compat_mph; } 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 const char *fdt_usb_get_node_type(void *blob, int start_offset, int *node_offset) { const char *compat_dr = "fsl-usb2-dr"; const char *compat_mph = "fsl-usb2-mph"; const char *node_type = NULL; *node_offset = fdt_node_offset_by_compatible(blob, start_offset, compat_mph); if (*node_offset < 0) { *node_offset = fdt_node_offset_by_compatible(blob, start_offset, compat_dr); if (*node_offset < 0) { printf("ERROR: could not find compatible node: %s\n", fdt_strerror(*node_offset)); } else { node_type = compat_dr; } } else { node_type = compat_mph; } return node_type; } static int fdt_fixup_usb_erratum(void *blob, const char *prop_erratum, int start_offset) { int node_offset, err; const char *node_type = NULL; node_type = fdt_usb_get_node_type(blob, start_offset, &node_offset); if (!node_type) return -1; 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; } 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_mode_off = -1; int usb_phy_off = -1; char str[5]; int i, j; 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; if (has_erratum_a006261()) { usb_erratum_a006261_off = fdt_fixup_usb_erratum (blob, "fsl,usb-erratum-a006261", usb_erratum_a006261_off); if (usb_erratum_a006261_off < 0) return; } if (has_erratum_a007075()) { usb_erratum_a007075_off = fdt_fixup_usb_erratum (blob, "fsl,usb-erratum-a007075", usb_erratum_a007075_off); if (usb_erratum_a007075_off < 0) return; } if (has_erratum_a007792()) { usb_erratum_a007792_off = fdt_fixup_usb_erratum (blob, "fsl,usb-erratum-a007792", usb_erratum_a007792_off); if (usb_erratum_a007792_off < 0) return; } if (has_erratum_a005697()) { usb_erratum_a005697_off = fdt_fixup_usb_erratum (blob, "fsl,usb-erratum-a005697", usb_erratum_a005697_off); if (usb_erratum_a005697_off < 0) return; } } }