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
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2019, Toradex AG
*/
/*
* Helpers for Freescale PMIC PF0100
*/
#include <common.h>
#include <command.h>
#include <i2c.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <linux/delay.h>
#include "pf0100_otp.inc"
#include "pf0100.h"
/* define for PMIC register dump */
/*#define DEBUG */
#define WARNBAR "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@\n"
/* use Apalis GPIO1 to switch on VPGM, ON: 1 */
static __maybe_unused iomux_v3_cfg_t const pmic_prog_pads[] = {
MX6_PAD_NANDF_D4__GPIO2_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL),
# define PMIC_PROG_VOLTAGE IMX_GPIO_NR(2, 4)
};
unsigned pmic_init(void)
{
int rc;
struct udevice *dev = NULL;
unsigned programmed = 0;
uchar bus = 1;
uchar devid, revid, val;
puts("PMIC: ");
rc = i2c_get_chip_for_busnum(bus, PFUZE100_I2C_ADDR, 1, &dev);
if (rc) {
printf("failed to get device for PMIC at address 0x%x\n",
PFUZE100_I2C_ADDR);
return 0;
}
/* check for errors in PMIC fuses */
if (dm_i2c_read(dev, PFUZE100_INTSTAT3, &val, 1) < 0) {
puts("i2c pmic INTSTAT3 register read failed\n");
return 0;
}
if (val & PFUZE100_BIT_OTP_ECCI) {
puts("\n" WARNBAR);
puts("WARNING: ecc errors found in pmic fuse banks\n");
puts(WARNBAR);
}
if (dm_i2c_read(dev, PFUZE100_OTP_ECC_SE1, &val, 1) < 0) {
puts("i2c pmic ECC_SE1 register read failed\n");
return 0;
}
if (val & PFUZE100_BITS_ECC_SE1) {
puts(WARNBAR);
puts("WARNING: ecc has made bit corrections in banks 1 to 5\n");
puts(WARNBAR);
}
if (dm_i2c_read(dev, PFUZE100_OTP_ECC_SE2, &val, 1) < 0) {
puts("i2c pmic ECC_SE2 register read failed\n");
return 0;
}
if (val & PFUZE100_BITS_ECC_SE2) {
puts(WARNBAR);
puts("WARNING: ecc has made bit corrections in banks 6 to 10\n"
);
puts(WARNBAR);
}
if (dm_i2c_read(dev, PFUZE100_OTP_ECC_DE1, &val, 1) < 0) {
puts("i2c pmic ECC_DE register read failed\n");
return 0;
}
if (val & PFUZE100_BITS_ECC_DE1) {
puts(WARNBAR);
puts("ERROR: banks 1 to 5 have uncorrectable bits\n");
puts(WARNBAR);
}
if (dm_i2c_read(dev, PFUZE100_OTP_ECC_DE2, &val, 1) < 0) {
puts("i2c pmic ECC_DE register read failed\n");
return 0;
}
if (val & PFUZE100_BITS_ECC_DE2) {
puts(WARNBAR);
puts("ERROR: banks 6 to 10 have uncorrectable bits\n");
puts(WARNBAR);
}
/* get device ident */
if (dm_i2c_read(dev, PFUZE100_DEVICEID, &devid, 1) < 0) {
puts("i2c pmic devid read failed\n");
return 0;
}
if (dm_i2c_read(dev, PFUZE100_REVID, &revid, 1) < 0) {
puts("i2c pmic revid read failed\n");
return 0;
}
printf("device id: 0x%.2x, revision id: 0x%.2x, ", devid, revid);
/* get device programmed state */
val = PFUZE100_PAGE_REGISTER_PAGE1;
if (dm_i2c_write(dev, PFUZE100_PAGE_REGISTER, &val, 1)) {
puts("i2c write failed\n");
return 0;
}
if (dm_i2c_read(dev, PFUZE100_FUSE_POR1, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return 0;
}
if (val & PFUZE100_FUSE_POR_M)
programmed++;
if (dm_i2c_read(dev, PFUZE100_FUSE_POR2, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return programmed;
}
if (val & PFUZE100_FUSE_POR_M)
programmed++;
if (dm_i2c_read(dev, PFUZE100_FUSE_POR3, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return programmed;
}
if (val & PFUZE100_FUSE_POR_M)
programmed++;
switch (programmed) {
case 0:
puts("not programmed\n");
break;
case 3:
puts("programmed\n");
break;
default:
puts("undefined programming state\n");
break;
}
/* The following is needed during production */
if (programmed != 3) {
/* set VGEN1 to 1.2V */
val = PFUZE100_VGEN1_VAL;
if (dm_i2c_write(dev, PFUZE100_VGEN1CTL, &val, 1)) {
puts("i2c write failed\n");
return programmed;
}
/* set SWBST to 5.0V */
val = PFUZE100_SWBST_VAL;
if (dm_i2c_write(dev, PFUZE100_SWBSTCTL, &val, 1))
puts("i2c write failed\n");
}
#ifdef DEBUG
{
unsigned int i, j;
for (i = 0; i < 16; i++)
printf("\t%x", i);
for (j = 0; j < 0x80; ) {
printf("\n%2x", j);
for (i = 0; i < 16; i++) {
dm_i2c_read(dev, j + i, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\nEXT Page 1");
val = PFUZE100_PAGE_REGISTER_PAGE1;
if (dm_i2c_write(dev, PFUZE100_PAGE_REGISTER, &val, 1)) {
puts("i2c write failed\n");
return 0;
}
for (j = 0x80; j < 0x100; ) {
printf("\n%2x", j);
for (i = 0; i < 16; i++) {
dm_i2c_read(dev, j + i, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\nEXT Page 2");
val = PFUZE100_PAGE_REGISTER_PAGE2;
if (dm_i2c_write(dev, PFUZE100_PAGE_REGISTER, &val, 1)) {
puts("i2c write failed\n");
return 0;
}
for (j = 0x80; j < 0x100; ) {
printf("\n%2x", j);
for (i = 0; i < 16; i++) {
dm_i2c_read(dev, j + i, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\n");
}
#endif /* DEBUG */
return programmed;
}
#ifndef CONFIG_SPL_BUILD
static int pf0100_prog(void)
{
int rc;
struct udevice *dev = NULL;
unsigned char bus = 1;
unsigned char val;
unsigned int i;
if (pmic_init() == 3) {
puts("PMIC already programmed, exiting\n");
return CMD_RET_FAILURE;
}
/* set up gpio to manipulate vprog, initially off */
imx_iomux_v3_setup_multiple_pads(pmic_prog_pads,
ARRAY_SIZE(pmic_prog_pads));
gpio_direction_output(PMIC_PROG_VOLTAGE, 0);
rc = i2c_get_chip_for_busnum(bus, PFUZE100_I2C_ADDR, 1, &dev);
if (rc) {
printf("failed to get device for PMIC at address 0x%x\n",
PFUZE100_I2C_ADDR);
return CMD_RET_FAILURE;
}
for (i = 0; i < ARRAY_SIZE(pmic_otp_prog); i++) {
switch (pmic_otp_prog[i].cmd) {
case pmic_i2c:
val = (unsigned char) (pmic_otp_prog[i].value & 0xff);
if (dm_i2c_write(dev, pmic_otp_prog[i].reg, &val, 1)) {
printf("i2c write failed, reg 0x%2x, value 0x%2x\n",
pmic_otp_prog[i].reg, val);
return CMD_RET_FAILURE;
}
break;
case pmic_delay:
udelay(pmic_otp_prog[i].value * 1000);
break;
case pmic_vpgm:
gpio_direction_output(PMIC_PROG_VOLTAGE,
pmic_otp_prog[i].value);
break;
case pmic_pwr:
/* TODO */
break;
}
}
return CMD_RET_SUCCESS;
}
static int do_pf0100_prog(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int ret;
puts("Programming PMIC OTP...");
ret = pf0100_prog();
if (ret == CMD_RET_SUCCESS)
puts("done.\n");
else
puts("failed.\n");
return ret;
}
U_BOOT_CMD(
pf0100_otp_prog, 1, 0, do_pf0100_prog,
"Program the OTP fuses on the PMIC PF0100",
""
);
#endif /* CONFIG_SPL_BUILD */
|
