drivers/power/pmic/pmic_hi6553.c

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