1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com/
* Dave Gerlach <d-gerlach@ti.com>
*/
#include <dm.h>
#include <soc.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
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;
case JTAG_ID_PARTNO_J784S4:
family = "J784S4";
break;
case JTAG_ID_PARTNO_AM62PX:
family = "AM62PX";
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),
};
|
