1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Freescale QorIQ Platforms GUTS Driver
5 * Copyright (C) 2016 Freescale Semiconductor, Inc.
9 #include <linux/slab.h>
10 #include <linux/module.h>
11 #include <linux/of_fdt.h>
12 #include <linux/sys_soc.h>
13 #include <linux/of_address.h>
14 #include <linux/platform_device.h>
15 #include <linux/fsl/guts.h>
17 struct fsl_soc_die_attr {
23 static struct soc_device_attribute soc_dev_attr;
26 /* SoC die attribute definition for QorIQ platform */
27 static const struct fsl_soc_die_attr fsl_soc_die[] = {
29 * Power Architecture-based SoCs T Series
32 /* Die: T4240, SoC: T4240/T4160/T4080 */
37 /* Die: T1040, SoC: T1040/T1020/T1042/T1022 */
42 /* Die: T2080, SoC: T2080/T2081 */
47 /* Die: T1024, SoC: T1024/T1014/T1023/T1013 */
54 * ARM-based SoCs LS Series
57 /* Die: LS1043A, SoC: LS1043A/LS1023A */
62 /* Die: LS2080A, SoC: LS2080A/LS2040A/LS2085A */
67 /* Die: LS1088A, SoC: LS1088A/LS1048A/LS1084A/LS1044A */
72 /* Die: LS1012A, SoC: LS1012A */
77 /* Die: LS1046A, SoC: LS1046A/LS1026A */
82 /* Die: LS2088A, SoC: LS2088A/LS2048A/LS2084A/LS2044A */
87 /* Die: LS1021A, SoC: LS1021A/LS1020A/LS1022A */
92 /* Die: LX2160A, SoC: LX2160A/LX2120A/LX2080A */
97 /* Die: LS1028A, SoC: LS1028A */
105 static const struct fsl_soc_die_attr *fsl_soc_die_match(
106 u32 svr, const struct fsl_soc_die_attr *matches)
108 while (matches->svr) {
109 if (matches->svr == (svr & matches->mask))
116 static int fsl_guts_probe(struct platform_device *pdev)
118 struct device_node *root, *np = pdev->dev.of_node;
119 static struct soc_device *soc_dev;
120 struct device *dev = &pdev->dev;
121 const struct fsl_soc_die_attr *soc_die;
122 struct ccsr_guts __iomem *regs;
123 const char *machine = NULL;
127 regs = of_iomap(np, 0);
129 return PTR_ERR(regs);
131 little_endian = of_property_read_bool(np, "little-endian");
133 svr = ioread32(®s->svr);
135 svr = ioread32be(®s->svr);
138 /* Register soc device */
139 root = of_find_node_by_path("/");
140 if (of_property_read_string(root, "model", &machine))
141 of_property_read_string_index(root, "compatible", 0, &machine);
143 soc_dev_attr.machine = devm_kstrdup(dev, machine, GFP_KERNEL);
144 if (!soc_dev_attr.machine) {
151 soc_die = fsl_soc_die_match(svr, fsl_soc_die);
153 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL,
154 "QorIQ %s", soc_die->die);
156 soc_dev_attr.family = devm_kasprintf(dev, GFP_KERNEL, "QorIQ");
158 if (!soc_dev_attr.family)
160 soc_dev_attr.soc_id = devm_kasprintf(dev, GFP_KERNEL,
162 if (!soc_dev_attr.soc_id)
164 soc_dev_attr.revision = devm_kasprintf(dev, GFP_KERNEL, "%d.%d",
165 (svr >> 4) & 0xf, svr & 0xf);
166 if (!soc_dev_attr.revision)
169 soc_dev = soc_device_register(&soc_dev_attr);
171 return PTR_ERR(soc_dev);
173 pr_info("Machine: %s\n", soc_dev_attr.machine);
174 pr_info("SoC family: %s\n", soc_dev_attr.family);
175 pr_info("SoC ID: %s, Revision: %s\n",
176 soc_dev_attr.soc_id, soc_dev_attr.revision);
181 * Table for matching compatible strings, for device tree
182 * guts node, for Freescale QorIQ SOCs.
184 static const struct of_device_id fsl_guts_of_match[] = {
185 { .compatible = "fsl,qoriq-device-config-1.0", },
186 { .compatible = "fsl,qoriq-device-config-2.0", },
187 { .compatible = "fsl,p1010-guts", },
188 { .compatible = "fsl,p1020-guts", },
189 { .compatible = "fsl,p1021-guts", },
190 { .compatible = "fsl,p1022-guts", },
191 { .compatible = "fsl,p1023-guts", },
192 { .compatible = "fsl,p2020-guts", },
193 { .compatible = "fsl,bsc9131-guts", },
194 { .compatible = "fsl,bsc9132-guts", },
195 { .compatible = "fsl,mpc8536-guts", },
196 { .compatible = "fsl,mpc8544-guts", },
197 { .compatible = "fsl,mpc8548-guts", },
198 { .compatible = "fsl,mpc8568-guts", },
199 { .compatible = "fsl,mpc8569-guts", },
200 { .compatible = "fsl,mpc8572-guts", },
201 { .compatible = "fsl,ls1021a-dcfg", },
202 { .compatible = "fsl,ls1043a-dcfg", },
203 { .compatible = "fsl,ls2080a-dcfg", },
204 { .compatible = "fsl,ls1088a-dcfg", },
205 { .compatible = "fsl,ls1012a-dcfg", },
206 { .compatible = "fsl,ls1046a-dcfg", },
207 { .compatible = "fsl,lx2160a-dcfg", },
208 { .compatible = "fsl,ls1028a-dcfg", },
211 MODULE_DEVICE_TABLE(of, fsl_guts_of_match);
213 static struct platform_driver fsl_guts_driver = {
216 .of_match_table = fsl_guts_of_match,
218 .probe = fsl_guts_probe,
221 static int __init fsl_guts_init(void)
223 return platform_driver_register(&fsl_guts_driver);
225 core_initcall(fsl_guts_init);