^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) * TI K3 SoC info driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sys_soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define CTRLMMR_WKUP_JTAGID_REG 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Bits:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * 31-28 VARIANT Device variant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * 27-12 PARTNO Part number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * 11-1 MFG Indicates TI as manufacturer (0x17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * 1 Always 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define CTRLMMR_WKUP_JTAGID_VARIANT_SHIFT (28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define CTRLMMR_WKUP_JTAGID_VARIANT_MASK GENMASK(31, 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define CTRLMMR_WKUP_JTAGID_PARTNO_SHIFT (12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define CTRLMMR_WKUP_JTAGID_PARTNO_MASK GENMASK(27, 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define CTRLMMR_WKUP_JTAGID_MFG_SHIFT (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define CTRLMMR_WKUP_JTAGID_MFG_MASK GENMASK(11, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define CTRLMMR_WKUP_JTAGID_MFG_TI 0x17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const struct k3_soc_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) const char *family_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) } k3_soc_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { 0xBB5A, "AM65X" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) { 0xBB64, "J721E" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) { 0xBB6D, "J7200" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) k3_chipinfo_partno_to_names(unsigned int partno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct soc_device_attribute *soc_dev_attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) for (i = 0; i < ARRAY_SIZE(k3_soc_ids); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (partno == k3_soc_ids[i].id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) soc_dev_attr->family = k3_soc_ids[i].family_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static int k3_chipinfo_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct device_node *node = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct soc_device_attribute *soc_dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct soc_device *soc_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u32 partno_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u32 variant;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u32 jtag_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u32 mfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) regmap = device_node_to_regmap(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (IS_ERR(regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ret = regmap_read(regmap, CTRLMMR_WKUP_JTAGID_REG, &jtag_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) mfg = (jtag_id & CTRLMMR_WKUP_JTAGID_MFG_MASK) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) CTRLMMR_WKUP_JTAGID_MFG_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (mfg != CTRLMMR_WKUP_JTAGID_MFG_TI) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dev_err(dev, "Invalid MFG SoC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) variant = (jtag_id & CTRLMMR_WKUP_JTAGID_VARIANT_MASK) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) CTRLMMR_WKUP_JTAGID_VARIANT_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) variant++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) partno_id = (jtag_id & CTRLMMR_WKUP_JTAGID_PARTNO_MASK) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) CTRLMMR_WKUP_JTAGID_PARTNO_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (!soc_dev_attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) soc_dev_attr->revision = kasprintf(GFP_KERNEL, "SR%x.0", variant);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!soc_dev_attr->revision) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ret = k3_chipinfo_partno_to_names(partno_id, soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) dev_err(dev, "Unknown SoC JTAGID[0x%08X]\n", jtag_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) goto err_free_rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) node = of_find_node_by_path("/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) of_property_read_string(node, "model", &soc_dev_attr->machine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) of_node_put(node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) soc_dev = soc_device_register(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (IS_ERR(soc_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ret = PTR_ERR(soc_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) goto err_free_rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) dev_info(dev, "Family:%s rev:%s JTAGID[0x%08x] Detected\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) soc_dev_attr->family,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) soc_dev_attr->revision, jtag_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) err_free_rev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) kfree(soc_dev_attr->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) kfree(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static const struct of_device_id k3_chipinfo_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) { .compatible = "ti,am654-chipid", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) { /* sentinel */ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static struct platform_driver k3_chipinfo_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .name = "k3-chipinfo",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .of_match_table = k3_chipinfo_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .probe = k3_chipinfo_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static int __init k3_chipinfo_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return platform_driver_register(&k3_chipinfo_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) subsys_initcall(k3_chipinfo_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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