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
|
/*
* This file is part of the coreboot project.
*
* Copyright 2014 Rockchip 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <console/console.h>
#include <device/i2c.h>
#include <stdint.h>
#include <stdlib.h>
#include "pmic.h"
#define RK808_ADDR 0x1b
#define LOD1EN (1 << 0)
#define LOD2EN (1 << 1)
#define LOD3EN (1 << 2)
#define LOD4EN (1 << 3)
#define LOD5EN (1 << 4)
#define LOD6EN (1 << 5)
#define LOD7EN (1 << 6)
#define LOD8EN (1 << 7)
#define LDO_BASE18V 18
#define LDO_BASE08V 8
#define LDOVSEL(mV, base) (mV/100 - base)
struct rk808_reg {
u8 reg;
u8 val;
};
enum {
LDO_EN = 0x24,
LDO1_ONSEL = 0x3B,
LDO1_SLPSEL,
LDO2_ONSEL,
LDO2_SLPSEL,
LDO3_ONSEL,
LDO3_SLPSEL,
LDO4_ONSEL,
LDO4_SLPSEL,
LDO5_ONSEL,
LDO5_SLPSEL,
LDO6_ONSEL,
LDO6_SLPSEL,
LDO7_ONSEL,
LDO7_SLPSEL,
LDO8_ONSEL,
LDO8_SLPSEL,
};
static struct rk808_reg ldo_initlist[] = {
{LDO4_ONSEL, LDOVSEL(1800, LDO_BASE18V)}, /*vcc18_lcd*/
{LDO5_ONSEL, LDOVSEL(1800, LDO_BASE18V)}, /*vcc18_codec*/
{LDO6_ONSEL, LDOVSEL(1000, LDO_BASE08V)}, /*vcc10_lcd*/
{LDO8_ONSEL, LDOVSEL(3300, LDO_BASE18V)}, /*vccio_sd*/
};
void pmic_init(unsigned int bus)
{
uint8_t read_reg;
int i;
for (i = 0; i < ARRAY_SIZE(ldo_initlist); i++) {
struct rk808_reg *reg = &ldo_initlist[i];
i2c_writeb(bus, RK808_ADDR, reg->reg, reg->val);
}
/*enable ldo4,ldo5,ldo6,ldo8*/
i2c_readb(bus, RK808_ADDR, LDO_EN, &read_reg);
i2c_writeb(bus, RK808_ADDR, LDO_EN, read_reg | LOD8EN | LOD6EN
| LOD5EN | LOD4EN);
}
|
