// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ * Dave Gerlach */ #include #include #include #include #include struct soc_ti_k3_plat { const char *family; const char *revision; }; static const char *get_family_string(u32 idreg) { const char *family; u32 soc; soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT; switch (soc) { case JTAG_ID_PARTNO_AM65X: family = "AM65X"; break; case JTAG_ID_PARTNO_J721E: family = "J721E"; break; case JTAG_ID_PARTNO_J7200: family = "J7200"; break; case JTAG_ID_PARTNO_AM64X: family = "AM64X"; break; case JTAG_ID_PARTNO_J721S2: family = "J721S2"; break; case JTAG_ID_PARTNO_AM62X: family = "AM62X"; break; case JTAG_ID_PARTNO_AM62AX: family = "AM62AX"; break; default: family = "Unknown Silicon"; }; return family; } static char *j721e_rev_string_map[] = { "1.0", "1.1", }; static char *typical_rev_string_map[] = { "1.0", "2.0", "3.0", }; static const char *get_rev_string(u32 idreg) { u32 rev; u32 soc; rev = (idreg & JTAG_ID_VARIANT_MASK) >> JTAG_ID_VARIANT_SHIFT; soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT; switch (soc) { case JTAG_ID_PARTNO_J721E: if (rev > ARRAY_SIZE(j721e_rev_string_map)) goto bail; return j721e_rev_string_map[rev]; default: if (rev > ARRAY_SIZE(typical_rev_string_map)) goto bail; return typical_rev_string_map[rev]; }; bail: return "Unknown Revision"; } static int soc_ti_k3_get_family(struct udevice *dev, char *buf, int size) { struct soc_ti_k3_plat *plat = dev_get_plat(dev); snprintf(buf, size, "%s", plat->family); return 0; } static int soc_ti_k3_get_revision(struct udevice *dev, char *buf, int size) { struct soc_ti_k3_plat *plat = dev_get_plat(dev); snprintf(buf, size, "SR%s", plat->revision); return 0; } static const struct soc_ops soc_ti_k3_ops = { .get_family = soc_ti_k3_get_family, .get_revision = soc_ti_k3_get_revision, }; int soc_ti_k3_probe(struct udevice *dev) { struct soc_ti_k3_plat *plat = dev_get_plat(dev); u32 idreg; void *idreg_addr; idreg_addr = dev_read_addr_ptr(dev); if (!idreg_addr) return -EINVAL; idreg = readl(idreg_addr); plat->family = get_family_string(idreg); plat->revision = get_rev_string(idreg); return 0; } static const struct udevice_id soc_ti_k3_ids[] = { { .compatible = "ti,am654-chipid" }, { } }; U_BOOT_DRIVER(soc_ti_k3) = { .name = "soc_ti_k3", .id = UCLASS_SOC, .ops = &soc_ti_k3_ops, .of_match = soc_ti_k3_ids, .probe = soc_ti_k3_probe, .plat_auto = sizeof(struct soc_ti_k3_plat), };