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
|
/*
* Copyright (C) 2014, Toradex AG
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Helpers for Freescale PMIC PF0100
*/
#include <common.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/imx-common/iomux-v3.h>
#include "pf0100_otp.inc"
#include "pf0100.h"
/* define for PMIC register dump */
/*#define DEBUG */
/* 7-bit I2C bus slave address */
#define PFUZE100_I2C_ADDR (0x08)
/* use GPIO: EXT_IO1 to switch on VPGM, ON: 1 */
static iomux_v3_cfg_t const pmic_prog_pads[] = {
MX6_PAD_NANDF_D3__GPIO2_IO03 | MUX_PAD_CTRL(NO_PAD_CTRL),
# define PMIC_PROG_VOLTAGE IMX_GPIO_NR(2, 3)
};
unsigned pmic_init(void)
{
unsigned programmed = 0;
uchar bus = 1;
uchar devid, revid, val;
puts("PMIC: ");
if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR))))
{
puts("i2c bus failed\n");
return 0;
}
/* get device ident */
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_DEVICEID, 1, &devid, 1) < 0) {
puts("i2c pmic devid read failed\n");
return 0;
}
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_REVID, 1, &revid, 1) < 0) {
puts("i2c pmic revid read failed\n");
return 0;
}
printf("device id: 0x%.2x, revision id: 0x%.2x\n", devid, revid);
#ifdef DEBUG
{
unsigned 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++) {
i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\nEXT Page 1");
val = PFUZE100_PAGE_REGISTER_PAGE1;
if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1,
&val, 1)) {
puts("i2c write failed\n");
return 0;
}
for(j=0x80; j<0x100; ) {
printf("\n%2x",j);
for(i=0; i<16; i++) {
i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\nEXT Page 2");
val = PFUZE100_PAGE_REGISTER_PAGE2;
if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1,
&val, 1)) {
puts("i2c write failed\n");
return 0;
}
for(j=0x80; j<0x100; )
{
printf("\n%2x",j);
for(i=0; i<16; i++)
{
i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1);
printf("\t%2x", val);
}
j += 0x10;
}
printf("\n");
}
#endif
/* get device programmed state */
val = PFUZE100_PAGE_REGISTER_PAGE1;
if( i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, &val, 1))
{
puts("i2c write failed\n");
return 0;
}
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR1, 1, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return 0;
}
if(val & PFUZE100_FUSE_POR_M)
programmed++;
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR2, 1, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return programmed;
}
if(val & PFUZE100_FUSE_POR_M)
programmed++;
if( i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR3, 1, &val, 1) < 0) {
puts("i2c fuse_por read failed\n");
return programmed;
}
if(val & PFUZE100_FUSE_POR_M)
programmed++;
switch (programmed) {
case 0:
printf("PMIC: not programmed\n");
break;
case 3:
printf("PMIC: programmed\n");
break;
default:
printf("PMIC: undefined programming state\n");
break;
}
return programmed;
}
int pf0100_prog(void)
{
unsigned char bus = 1;
unsigned char val;
unsigned i;
if(pmic_init() == 3) {
puts("PMIC already programmed, exiting\n");
return 1;
}
/* 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);
if(!(0 == i2c_set_bus_num(bus) && (0 == i2c_probe(PFUZE100_I2C_ADDR))))
{
puts("i2c bus failed\n");
return 1;
}
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( i2c_write(PFUZE100_I2C_ADDR, pmic_otp_prog[i].reg,
1, &val, 1)) {
printf("i2c write failed, reg 0x%2x, value"
"0x%2x\n", pmic_otp_prog[i].reg, val);
return 1;
}
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 0;
}
int do_pf0100_prog(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
puts("Programming PMIC OTP...");
if(!pf0100_prog())
puts("done.\n");
else
puts("failed.\n");
return 0;
}
U_BOOT_CMD(
pf0100_otp_prog, 1, 0, do_pf0100_prog,
"Program the OTP fuses on the PMIC PF0100",
""
);
|
