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1 /*
2  * Copyright 2014 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <errno.h>
9 #include <power/pmic.h>
10 #include <power/pfuze100_pmic.h>
11
12 int pfuze_mode_init(struct pmic *p, u32 mode)
13 {
14         unsigned char offset, i, switch_num;
15         u32 id, ret;
16
17         pmic_reg_read(p, PFUZE100_DEVICEID, &id);
18         id = id & 0xf;
19
20         if (id == 0) {
21                 switch_num = 6;
22                 offset = PFUZE100_SW1CMODE;
23         } else if (id == 1) {
24                 switch_num = 4;
25                 offset = PFUZE100_SW2MODE;
26         } else {
27                 printf("Not supported, id=%d\n", id);
28                 return -EINVAL;
29         }
30
31         ret = pmic_reg_write(p, PFUZE100_SW1ABMODE, mode);
32         if (ret < 0) {
33                 printf("Set SW1AB mode error!\n");
34                 return ret;
35         }
36
37         for (i = 0; i < switch_num - 1; i++) {
38                 ret = pmic_reg_write(p, offset + i * SWITCH_SIZE, mode);
39                 if (ret < 0) {
40                         printf("Set switch 0x%x mode error!\n",
41                                offset + i * SWITCH_SIZE);
42                         return ret;
43                 }
44         }
45
46         return ret;
47 }
48
49 struct pmic *pfuze_common_init(unsigned char i2cbus)
50 {
51         struct pmic *p;
52         int ret;
53         unsigned int reg;
54
55         ret = power_pfuze100_init(i2cbus);
56         if (ret)
57                 return NULL;
58
59         p = pmic_get("PFUZE100");
60         ret = pmic_probe(p);
61         if (ret)
62                 return NULL;
63
64         pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
65         printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
66
67         /* Set SW1AB stanby volage to 0.975V */
68         pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
69         reg &= ~SW1x_STBY_MASK;
70         reg |= SW1x_0_975V;
71         pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
72
73         /* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
74         pmic_reg_read(p, PFUZE100_SW1ABCONF, &reg);
75         reg &= ~SW1xCONF_DVSSPEED_MASK;
76         reg |= SW1xCONF_DVSSPEED_4US;
77         pmic_reg_write(p, PFUZE100_SW1ABCONF, reg);
78
79         /* Set SW1C standby voltage to 0.975V */
80         pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
81         reg &= ~SW1x_STBY_MASK;
82         reg |= SW1x_0_975V;
83         pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
84
85         /* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
86         pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
87         reg &= ~SW1xCONF_DVSSPEED_MASK;
88         reg |= SW1xCONF_DVSSPEED_4US;
89         pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
90
91         return p;
92 }