^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2017 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sys_soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/bitfield.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define MESON_SOCINFO_MAJOR_VER_MESON6 0x16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define MESON_SOCINFO_MAJOR_VER_MESON8 0x19
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define MESON_SOCINFO_MAJOR_VER_MESON8B 0x1b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define MESON_MX_ASSIST_HW_REV 0x14c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define MESON_MX_ANALOG_TOP_METAL_REVISION 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define MESON_MX_BOOTROM_MISC_VER 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static const char *meson_mx_socinfo_revision(unsigned int major_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned int misc_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned int metal_rev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) unsigned int minor_ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) switch (major_ver) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) case MESON_SOCINFO_MAJOR_VER_MESON6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) minor_ver = 0xa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) case MESON_SOCINFO_MAJOR_VER_MESON8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (metal_rev == 0x11111112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) major_ver = 0x1d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (metal_rev == 0x11111111 || metal_rev == 0x11111112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) minor_ver = 0xa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) else if (metal_rev == 0x11111113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) minor_ver = 0xb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) else if (metal_rev == 0x11111133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) minor_ver = 0xc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) minor_ver = 0xd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case MESON_SOCINFO_MAJOR_VER_MESON8B:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (metal_rev == 0x11111111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) minor_ver = 0xa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) minor_ver = 0xb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) minor_ver = 0x0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return kasprintf(GFP_KERNEL, "Rev%X (%x - 0:%X)", minor_ver, major_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) misc_ver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static const char *meson_mx_socinfo_soc_id(unsigned int major_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) unsigned int metal_rev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) const char *soc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) switch (major_ver) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) case MESON_SOCINFO_MAJOR_VER_MESON6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) soc_id = "Meson6 (AML8726-MX)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) case MESON_SOCINFO_MAJOR_VER_MESON8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (metal_rev == 0x11111112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) soc_id = "Meson8m2 (S812)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) soc_id = "Meson8 (S802)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) case MESON_SOCINFO_MAJOR_VER_MESON8B:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) soc_id = "Meson8b (S805)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) soc_id = "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return kstrdup_const(soc_id, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static const struct of_device_id meson_mx_socinfo_analog_top_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) { .compatible = "amlogic,meson8-analog-top", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) { .compatible = "amlogic,meson8b-analog-top", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int __init meson_mx_socinfo_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct soc_device_attribute *soc_dev_attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct soc_device *soc_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct device_node *np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct regmap *assist_regmap, *bootrom_regmap, *analog_top_regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) unsigned int major_ver, misc_ver, metal_rev = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) assist_regmap =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) syscon_regmap_lookup_by_compatible("amlogic,meson-mx-assist");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (IS_ERR(assist_regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return PTR_ERR(assist_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) bootrom_regmap =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) syscon_regmap_lookup_by_compatible("amlogic,meson-mx-bootrom");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (IS_ERR(bootrom_regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return PTR_ERR(bootrom_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) np = of_find_matching_node(NULL, meson_mx_socinfo_analog_top_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) analog_top_regmap = syscon_node_to_regmap(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (IS_ERR(analog_top_regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return PTR_ERR(analog_top_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ret = regmap_read(analog_top_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) MESON_MX_ANALOG_TOP_METAL_REVISION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) &metal_rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret = regmap_read(assist_regmap, MESON_MX_ASSIST_HW_REV, &major_ver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) ret = regmap_read(bootrom_regmap, MESON_MX_BOOTROM_MISC_VER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) &misc_ver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (!soc_dev_attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) soc_dev_attr->family = "Amlogic Meson";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) np = of_find_node_by_path("/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) of_property_read_string(np, "model", &soc_dev_attr->machine);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) of_node_put(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) soc_dev_attr->revision = meson_mx_socinfo_revision(major_ver, misc_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) metal_rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) soc_dev_attr->soc_id = meson_mx_socinfo_soc_id(major_ver, metal_rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) soc_dev = soc_device_register(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (IS_ERR(soc_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) kfree_const(soc_dev_attr->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) kfree_const(soc_dev_attr->soc_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) kfree(soc_dev_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return PTR_ERR(soc_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) dev_info(soc_device_to_device(soc_dev), "Amlogic %s %s detected\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) soc_dev_attr->soc_id, soc_dev_attr->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) device_initcall(meson_mx_socinfo_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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