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a02d517b MK |
1 | /* |
2 | * Copyright (C) 2014-2016, Toradex AG | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Helpers for Freescale PMIC PF0100 | |
9 | */ | |
10 | ||
11 | #include <common.h> | |
12 | #include <i2c.h> | |
13 | #include <asm/arch/imx-regs.h> | |
14 | #include <asm/arch/iomux.h> | |
15 | #include <asm/arch/mx6-pins.h> | |
16 | #include <asm/gpio.h> | |
552a848e | 17 | #include <asm/mach-imx/iomux-v3.h> |
a02d517b MK |
18 | |
19 | #include "pf0100_otp.inc" | |
20 | #include "pf0100.h" | |
21 | ||
22 | /* define for PMIC register dump */ | |
23 | /*#define DEBUG */ | |
24 | ||
25 | /* use GPIO: EXT_IO1 to switch on VPGM, ON: 1 */ | |
26 | static iomux_v3_cfg_t const pmic_prog_pads[] = { | |
27 | MX6_PAD_NANDF_D3__GPIO2_IO03 | MUX_PAD_CTRL(NO_PAD_CTRL), | |
28 | # define PMIC_PROG_VOLTAGE IMX_GPIO_NR(2, 3) | |
29 | }; | |
30 | ||
31 | unsigned pmic_init(void) | |
32 | { | |
33 | unsigned programmed = 0; | |
34 | uchar bus = 1; | |
35 | uchar devid, revid, val; | |
36 | ||
37 | puts("PMIC: "); | |
38 | if (!((0 == i2c_set_bus_num(bus)) && | |
39 | (0 == i2c_probe(PFUZE100_I2C_ADDR)))) { | |
40 | puts("i2c bus failed\n"); | |
41 | return 0; | |
42 | } | |
43 | /* get device ident */ | |
44 | if (i2c_read(PFUZE100_I2C_ADDR, PFUZE100_DEVICEID, 1, &devid, 1) < 0) { | |
45 | puts("i2c pmic devid read failed\n"); | |
46 | return 0; | |
47 | } | |
48 | if (i2c_read(PFUZE100_I2C_ADDR, PFUZE100_REVID, 1, &revid, 1) < 0) { | |
49 | puts("i2c pmic revid read failed\n"); | |
50 | return 0; | |
51 | } | |
52 | printf("device id: 0x%.2x, revision id: 0x%.2x\n", devid, revid); | |
53 | ||
54 | #ifdef DEBUG | |
55 | { | |
56 | unsigned i, j; | |
57 | ||
58 | for (i = 0; i < 16; i++) | |
59 | printf("\t%x", i); | |
60 | for (j = 0; j < 0x80; ) { | |
61 | printf("\n%2x", j); | |
62 | for (i = 0; i < 16; i++) { | |
63 | i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); | |
64 | printf("\t%2x", val); | |
65 | } | |
66 | j += 0x10; | |
67 | } | |
68 | printf("\nEXT Page 1"); | |
69 | ||
70 | val = PFUZE100_PAGE_REGISTER_PAGE1; | |
71 | if (i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, | |
72 | &val, 1)) { | |
73 | puts("i2c write failed\n"); | |
74 | return 0; | |
75 | } | |
76 | ||
77 | for (j = 0x80; j < 0x100; ) { | |
78 | printf("\n%2x", j); | |
79 | for (i = 0; i < 16; i++) { | |
80 | i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); | |
81 | printf("\t%2x", val); | |
82 | } | |
83 | j += 0x10; | |
84 | } | |
85 | printf("\nEXT Page 2"); | |
86 | ||
87 | val = PFUZE100_PAGE_REGISTER_PAGE2; | |
88 | if (i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, | |
89 | &val, 1)) { | |
90 | puts("i2c write failed\n"); | |
91 | return 0; | |
92 | } | |
93 | ||
94 | for (j = 0x80; j < 0x100; ) { | |
95 | printf("\n%2x", j); | |
96 | for (i = 0; i < 16; i++) { | |
97 | i2c_read(PFUZE100_I2C_ADDR, j+i, 1, &val, 1); | |
98 | printf("\t%2x", val); | |
99 | } | |
100 | j += 0x10; | |
101 | } | |
102 | printf("\n"); | |
103 | } | |
104 | #endif | |
105 | /* get device programmed state */ | |
106 | val = PFUZE100_PAGE_REGISTER_PAGE1; | |
107 | if (i2c_write(PFUZE100_I2C_ADDR, PFUZE100_PAGE_REGISTER, 1, &val, 1)) { | |
108 | puts("i2c write failed\n"); | |
109 | return 0; | |
110 | } | |
111 | if (i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR1, 1, &val, 1) < 0) { | |
112 | puts("i2c fuse_por read failed\n"); | |
113 | return 0; | |
114 | } | |
115 | if (val & PFUZE100_FUSE_POR_M) | |
116 | programmed++; | |
117 | ||
118 | if (i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR2, 1, &val, 1) < 0) { | |
119 | puts("i2c fuse_por read failed\n"); | |
120 | return programmed; | |
121 | } | |
122 | if (val & PFUZE100_FUSE_POR_M) | |
123 | programmed++; | |
124 | ||
125 | if (i2c_read(PFUZE100_I2C_ADDR, PFUZE100_FUSE_POR3, 1, &val, 1) < 0) { | |
126 | puts("i2c fuse_por read failed\n"); | |
127 | return programmed; | |
128 | } | |
129 | if (val & PFUZE100_FUSE_POR_M) | |
130 | programmed++; | |
131 | ||
132 | switch (programmed) { | |
133 | case 0: | |
134 | printf("PMIC: not programmed\n"); | |
135 | break; | |
136 | case 3: | |
137 | printf("PMIC: programmed\n"); | |
138 | break; | |
139 | default: | |
140 | printf("PMIC: undefined programming state\n"); | |
141 | break; | |
142 | } | |
143 | ||
144 | return programmed; | |
145 | } | |
146 | ||
147 | int pf0100_prog(void) | |
148 | { | |
149 | unsigned char bus = 1; | |
150 | unsigned char val; | |
151 | unsigned int i; | |
152 | ||
153 | if (pmic_init() == 3) { | |
154 | puts("PMIC already programmed, exiting\n"); | |
155 | return CMD_RET_FAILURE; | |
156 | } | |
157 | /* set up gpio to manipulate vprog, initially off */ | |
158 | imx_iomux_v3_setup_multiple_pads(pmic_prog_pads, | |
159 | ARRAY_SIZE(pmic_prog_pads)); | |
160 | gpio_direction_output(PMIC_PROG_VOLTAGE, 0); | |
161 | ||
162 | if (!((0 == i2c_set_bus_num(bus)) && | |
163 | (0 == i2c_probe(PFUZE100_I2C_ADDR)))) { | |
164 | puts("i2c bus failed\n"); | |
165 | return CMD_RET_FAILURE; | |
166 | } | |
167 | ||
168 | for (i = 0; i < ARRAY_SIZE(pmic_otp_prog); i++) { | |
169 | switch (pmic_otp_prog[i].cmd) { | |
170 | case pmic_i2c: | |
171 | val = (unsigned char) (pmic_otp_prog[i].value & 0xff); | |
172 | if (i2c_write(PFUZE100_I2C_ADDR, pmic_otp_prog[i].reg, | |
173 | 1, &val, 1)) { | |
174 | printf("i2c write failed, reg 0x%2x, value 0x%2x\n", | |
175 | pmic_otp_prog[i].reg, val); | |
176 | return CMD_RET_FAILURE; | |
177 | } | |
178 | break; | |
179 | case pmic_delay: | |
180 | udelay(pmic_otp_prog[i].value * 1000); | |
181 | break; | |
182 | case pmic_vpgm: | |
183 | gpio_direction_output(PMIC_PROG_VOLTAGE, | |
184 | pmic_otp_prog[i].value); | |
185 | break; | |
186 | case pmic_pwr: | |
187 | /* TODO */ | |
188 | break; | |
189 | } | |
190 | } | |
191 | return CMD_RET_SUCCESS; | |
192 | } | |
193 | ||
194 | int do_pf0100_prog(cmd_tbl_t *cmdtp, int flag, int argc, | |
195 | char * const argv[]) | |
196 | { | |
197 | int ret; | |
198 | puts("Programming PMIC OTP..."); | |
199 | ret = pf0100_prog(); | |
200 | if (ret == CMD_RET_SUCCESS) | |
201 | puts("done.\n"); | |
202 | else | |
203 | puts("failed.\n"); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | U_BOOT_CMD( | |
208 | pf0100_otp_prog, 1, 0, do_pf0100_prog, | |
209 | "Program the OTP fuses on the PMIC PF0100", | |
210 | "" | |
211 | ); |