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
|
/*
* This file is part of the coreboot project.
*
* Copyright 2015 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <console/console.h>
#include <device/i2c_simple.h>
#include <soc/mt6311.h>
enum {
MT6311_SLAVE_ADDR = 0x6B,
};
static u32 get_mt6311_chip_id(uint8_t i2c_num)
{
unsigned char id[2] = {0};
i2c_read_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_CID,
&id[0], 0xFF, 0);
i2c_read_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_SWCID,
&id[1], 0xFF, 0);
return (u32)(id[0] << 8 | id[1]);
}
static void mt6311_hw_init(uint8_t i2c_num)
{
int ret = 0;
unsigned char var[3] = {0};
/*
* Phase Shedding Trim Software Setting
* The phase 2 of MT6311 will enter PWM mode if the threshold is
* reached.
* The threshold is set according to EFUSE value.
*/
ret |= i2c_read_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_EFUSE_DOUT_56_63, &var[0],
0x3, 1);
ret |= i2c_read_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_EFUSE_DOUT_56_63, &var[1],
0x1, 7);
ret |= i2c_read_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_EFUSE_DOUT_64_71, &var[2],
0x1, 0);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS1_ANA_CON10,
var[0] | var[1] << 2 | var[2] << 3, 0xf, 0);
/* I2C_CONFIG; pushpull setting, Opendrain is '0' */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_TOP_INT_CON,
0x1, 0x1, 2);
/* RG_WDTRSTB_EN; CC, initial WDRSTB setting. */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_TOP_RST_CON,
0x1, 0x1, 5);
/* initial INT function */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_GPIO_MODE,
0x1, 0x7, 3);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR, MT6311_STRUP_CON5,
0, 1 << 2 | 1 << 1 | 1 << 0, 0);
/* Vo max is 1.15V */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_STRUP_ANA_CON1, 0x3, 0x3, 5);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_BUCK_ALL_CON23, 0x1, 0x1, 0);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_STRUP_ANA_CON2, 0x3, 0x3, 0);
/* Suspend HW control from SPM */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_TOP_CON, 0x1, 0x1, 0);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON7, 0x1, 0x1, 0);
/* default VDVFS power on */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON9, 0x1, 0x1, 0);
/* for DVFS slew rate rising=0.67us */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON10, 0x1, 0x7f, 0);
/* for DVFS slew rate, falling 2.0us */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON11, 0x5, 0x7f, 0);
/* default VDVFS11_VOSEL 1.0V, SW control */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON12, 0x40, 0x7f, 0);
/* default VDVFS11_VOSEL_ON 1.0V, HW control */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON13, 0x40, 0x7f, 0);
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON14, 0x40, 0x7f, 0);
/* for DVFS sof change, falling 50us */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON19, 0x3, 0x3, 0);
/* for DVFS sof change, falling only */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_VDVFS11_CON19, 0x1, 0x3, 4);
/* OFF LDO */
ret |= i2c_write_field(i2c_num, MT6311_SLAVE_ADDR,
MT6311_LDO_CON3, 0, 0x1, 0);
if (ret)
printk(BIOS_ERR, "ERROR: %s failed\n", __func__);
}
void mt6311_probe(uint8_t i2c_num)
{
u32 val = 0;
/* Check device ID is MT6311 */
val = get_mt6311_chip_id(i2c_num);
printk(BIOS_INFO, "%s: device ID = %#x\n", __func__, val);
if (val < MT6311_E1_CID_CODE) {
printk(BIOS_ERR, "ERROR: unknown MT6311 device_id\n");
return;
}
mt6311_hw_init(i2c_num);
}
|
