^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2020 NXP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sys_soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <soc/imx/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <soc/imx/revision.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define OCOTP_UID_H 0x420
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define OCOTP_UID_L 0x410
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define OCOTP_ULP_UID_1 0x4b0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define OCOTP_ULP_UID_2 0x4c0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define OCOTP_ULP_UID_3 0x4d0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define OCOTP_ULP_UID_4 0x4e0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static int __init imx_soc_device_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct soc_device_attribute *soc_dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) const char *ocotp_compat = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct soc_device *soc_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct device_node *root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct regmap *ocotp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) const char *soc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u64 soc_uid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u32 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* Return early if this is running on devices with different SoCs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (!__mxc_cpu_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (of_machine_is_compatible("fsl,ls1021a"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (!soc_dev_attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) soc_dev_attr->family = "Freescale i.MX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) root = of_find_node_by_path("/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) of_node_put(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) goto free_soc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) switch (__mxc_cpu_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case MXC_CPU_MX1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) soc_id = "i.MX1";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) case MXC_CPU_MX21:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) soc_id = "i.MX21";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case MXC_CPU_MX25:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) soc_id = "i.MX25";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) case MXC_CPU_MX27:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) soc_id = "i.MX27";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) case MXC_CPU_MX31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) soc_id = "i.MX31";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) case MXC_CPU_MX35:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) soc_id = "i.MX35";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) case MXC_CPU_MX51:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) soc_id = "i.MX51";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) case MXC_CPU_MX53:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) soc_id = "i.MX53";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) case MXC_CPU_IMX6SL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) ocotp_compat = "fsl,imx6sl-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) soc_id = "i.MX6SL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) case MXC_CPU_IMX6DL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ocotp_compat = "fsl,imx6q-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) soc_id = "i.MX6DL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case MXC_CPU_IMX6SX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ocotp_compat = "fsl,imx6sx-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) soc_id = "i.MX6SX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) case MXC_CPU_IMX6Q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ocotp_compat = "fsl,imx6q-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) soc_id = "i.MX6Q";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) case MXC_CPU_IMX6UL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ocotp_compat = "fsl,imx6ul-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) soc_id = "i.MX6UL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) case MXC_CPU_IMX6ULL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ocotp_compat = "fsl,imx6ull-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) soc_id = "i.MX6ULL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) case MXC_CPU_IMX6ULZ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ocotp_compat = "fsl,imx6ull-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) soc_id = "i.MX6ULZ";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case MXC_CPU_IMX6SLL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ocotp_compat = "fsl,imx6sll-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) soc_id = "i.MX6SLL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) case MXC_CPU_IMX7D:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ocotp_compat = "fsl,imx7d-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) soc_id = "i.MX7D";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) case MXC_CPU_IMX7ULP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ocotp_compat = "fsl,imx7ulp-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) soc_id = "i.MX7ULP";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) case MXC_CPU_VF500:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ocotp_compat = "fsl,vf610-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) soc_id = "VF500";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case MXC_CPU_VF510:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) ocotp_compat = "fsl,vf610-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) soc_id = "VF510";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) case MXC_CPU_VF600:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ocotp_compat = "fsl,vf610-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) soc_id = "VF600";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) case MXC_CPU_VF610:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ocotp_compat = "fsl,vf610-ocotp";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) soc_id = "VF610";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) soc_id = "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) soc_dev_attr->soc_id = soc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (ocotp_compat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ocotp = syscon_regmap_lookup_by_compatible(ocotp_compat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (IS_ERR(ocotp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) pr_err("%s: failed to find %s regmap!\n", __func__, ocotp_compat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (!IS_ERR_OR_NULL(ocotp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (__mxc_cpu_type == MXC_CPU_IMX7ULP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) regmap_read(ocotp, OCOTP_ULP_UID_4, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) soc_uid = val & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) regmap_read(ocotp, OCOTP_ULP_UID_3, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) soc_uid <<= 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) soc_uid |= val & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) regmap_read(ocotp, OCOTP_ULP_UID_2, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) soc_uid <<= 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) soc_uid |= val & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) regmap_read(ocotp, OCOTP_ULP_UID_1, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) soc_uid <<= 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) soc_uid |= val & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) regmap_read(ocotp, OCOTP_UID_H, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) soc_uid = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) regmap_read(ocotp, OCOTP_UID_L, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) soc_uid <<= 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) soc_uid |= val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) (imx_get_soc_revision() >> 4) & 0xf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) imx_get_soc_revision() & 0xf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (!soc_dev_attr->revision) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) goto free_soc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (!soc_dev_attr->serial_number) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) goto free_rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) soc_dev = soc_device_register(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (IS_ERR(soc_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ret = PTR_ERR(soc_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) goto free_serial_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) free_serial_number:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) kfree(soc_dev_attr->serial_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) free_rev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) kfree(soc_dev_attr->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) free_soc:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) kfree(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) device_initcall(imx_soc_device_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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