pmic: pmic_hi6553: Add a driver for the hi6553 pmic found on hikey board.
[karo-tx-uboot.git] / drivers / power / pmic / pmic_hi6553.c
1 /*
2  *  Copyright (C) 2015 Linaro
3  *  Peter Griffin <peter.griffin@linaro.org>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7 #include <asm/io.h>
8 #include <common.h>
9 #include <power/pmic.h>
10 #include <power/max8997_muic.h>
11 #include <power/hi6553_pmic.h>
12 #include <errno.h>
13
14 u8 *pmussi_base;
15
16 uint8_t hi6553_readb(u32 offset)
17 {
18         return readb(pmussi_base + (offset << 2));
19 }
20
21 void hi6553_writeb(u32 offset, uint8_t value)
22 {
23         writeb(value, pmussi_base + (offset << 2));
24 }
25
26 int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
27 {
28         if (check_reg(p, reg))
29                 return -1;
30
31         hi6553_writeb(reg, (uint8_t)val);
32
33         return 0;
34 }
35
36 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
37 {
38         if (check_reg(p, reg))
39                 return -1;
40
41         *val = (u32)hi6553_readb(reg);
42
43         return 0;
44 }
45
46 static void hi6553_init(void)
47 {
48         int data;
49
50         hi6553_writeb(HI6553_PERI_EN_MARK, 0x1e);
51         hi6553_writeb(HI6553_NP_REG_ADJ1, 0);
52         data = HI6553_DISABLE6_XO_CLK_CONN | HI6553_DISABLE6_XO_CLK_NFC |
53                 HI6553_DISABLE6_XO_CLK_RF1 | HI6553_DISABLE6_XO_CLK_RF2;
54         hi6553_writeb(HI6553_DISABLE6_XO_CLK, data);
55
56         /* configure BUCK0 & BUCK1 */
57         hi6553_writeb(HI6553_BUCK01_CTRL2, 0x5e);
58         hi6553_writeb(HI6553_BUCK0_CTRL7, 0x10);
59         hi6553_writeb(HI6553_BUCK1_CTRL7, 0x10);
60         hi6553_writeb(HI6553_BUCK0_CTRL5, 0x1e);
61         hi6553_writeb(HI6553_BUCK1_CTRL5, 0x1e);
62         hi6553_writeb(HI6553_BUCK0_CTRL1, 0xfc);
63         hi6553_writeb(HI6553_BUCK1_CTRL1, 0xfc);
64
65         /* configure BUCK2 */
66         hi6553_writeb(HI6553_BUCK2_REG1, 0x4f);
67         hi6553_writeb(HI6553_BUCK2_REG5, 0x99);
68         hi6553_writeb(HI6553_BUCK2_REG6, 0x45);
69         mdelay(1);
70         hi6553_writeb(HI6553_VSET_BUCK2_ADJ, 0x22);
71         mdelay(1);
72
73         /* configure BUCK3 */
74         hi6553_writeb(HI6553_BUCK3_REG3, 0x02);
75         hi6553_writeb(HI6553_BUCK3_REG5, 0x99);
76         hi6553_writeb(HI6553_BUCK3_REG6, 0x41);
77         hi6553_writeb(HI6553_VSET_BUCK3_ADJ, 0x02);
78         mdelay(1);
79
80         /* configure BUCK4 */
81         hi6553_writeb(HI6553_BUCK4_REG2, 0x9a);
82         hi6553_writeb(HI6553_BUCK4_REG5, 0x99);
83         hi6553_writeb(HI6553_BUCK4_REG6, 0x45);
84
85         /* configure LDO20 */
86         hi6553_writeb(HI6553_LDO20_REG_ADJ, 0x50);
87
88         hi6553_writeb(HI6553_NP_REG_CHG, 0x0f);
89         hi6553_writeb(HI6553_CLK_TOP0, 0x06);
90         hi6553_writeb(HI6553_CLK_TOP3, 0xc0);
91         hi6553_writeb(HI6553_CLK_TOP4, 0x00);
92
93         /* configure LDO7 & LDO10 for SD slot */
94         data = hi6553_readb(HI6553_LDO7_REG_ADJ);
95         data = (data & 0xf8) | 0x2;
96         hi6553_writeb(HI6553_LDO7_REG_ADJ, data);
97         mdelay(5);
98         /* enable LDO7 */
99         hi6553_writeb(HI6553_ENABLE2_LDO1_8, 1 << 6);
100         mdelay(5);
101         data = hi6553_readb(HI6553_LDO10_REG_ADJ);
102         data = (data & 0xf8) | 0x5;
103         hi6553_writeb(HI6553_LDO10_REG_ADJ, data);
104         mdelay(5);
105         /* enable LDO10 */
106         hi6553_writeb(HI6553_ENABLE3_LDO9_16, 1 << 1);
107         mdelay(5);
108
109         /* select 32.764KHz */
110         hi6553_writeb(HI6553_CLK19M2_600_586_EN, 0x01);
111 }
112
113 int power_hi6553_init(u8 *base)
114 {
115         static const char name[] = "HI6553 PMIC";
116         struct pmic *p = pmic_alloc();
117
118         if (!p) {
119                 printf("%s: POWER allocation error!\n", __func__);
120                 return -ENOMEM;
121         }
122
123         p->name = name;
124         p->interface = PMIC_NONE;
125         p->number_of_regs = 44;
126         pmussi_base = base;
127
128         hi6553_init();
129
130         puts("HI6553 PMIC init\n");
131
132         return 0;
133 }