2 * Copyright (C) 2014 Lothar Waßmann <LW@KARO-electronics.de>
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
23 #define RN5T567_NOETIMSET 0x11
24 #define RN5T567_LDORTC1_SLOT 0x2a
25 #define RN5T567_DC1CTL 0x2c
26 #define RN5T567_DC1CTL2 0x2d
27 #define RN5T567_DC2CTL 0x2e
28 #define RN5T567_DC2CTL2 0x2f
29 #define RN5T567_DC3CTL 0x30
30 #define RN5T567_DC3CTL2 0x31
31 #define RN5T567_DC1DAC 0x36 /* CORE */
32 #define RN5T567_DC2DAC 0x37 /* SOC */
33 #define RN5T567_DC3DAC 0x38 /* DDR */
34 #define RN5T567_DC1DAC_SLP 0x3b
35 #define RN5T567_DC2DAC_SLP 0x3c
36 #define RN5T567_DC3DAC_SLP 0x3d
37 #define RN5T567_LDOEN1 0x44
38 #define RN5T567_LDODIS 0x46
39 #define RN5T567_LDOEN2 0x48
40 #define RN5T567_LDO3DAC 0x4e /* IO */
41 #define RN5T567_LDORTC1DAC 0x56 /* VBACKUP */
43 #define NOETIMSET_DIS_OFF_NOE_TIM (1 << 3)
45 #define VDD_RTC_VAL mV_to_regval_rtc(3000 * 10)
46 #define VDD_HIGH_VAL mV_to_regval3(3000 * 10)
47 #define VDD_HIGH_VAL_LP mV_to_regval3(3000 * 10)
48 #define VDD_CORE_VAL mV_to_regval(1425 * 10)
49 #define VDD_CORE_VAL_LP mV_to_regval(900 * 10)
50 #define VDD_SOC_VAL mV_to_regval(1425 * 10)
51 #define VDD_SOC_VAL_LP mV_to_regval(900 * 10)
52 #define VDD_DDR_VAL mV_to_regval(1500 * 10)
53 #define VDD_DDR_VAL_LP mV_to_regval(1500 * 10)
55 /* calculate voltages in 10mV */
57 #define mV_to_regval(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 125)
58 #define regval_to_mV(v) (((v) * 125 + 6000))
61 #define mV_to_regval2(mV) DIV_ROUND(((((mV) < 9000) ? 9000 : (mV)) - 9000), 250)
62 #define regval2_to_mV(v) (((v) * 250 + 9000))
65 #define mV_to_regval3(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 250)
66 #define regval3_to_mV(v) (((v) * 250 + 6000))
69 #define mV_to_regval_rtc(mV) DIV_ROUND(((((mV) < 17000) ? 17000 : (mV)) - 17000), 250)
70 #define regval_rtc_to_mV(v) (((v) * 250 + 17000))
72 static struct rn5t567_regs {
77 { RN5T567_NOETIMSET, NOETIMSET_DIS_OFF_NOE_TIM | 0x5, },
79 { RN5T567_DC1DAC, VDD_CORE_VAL, },
80 { RN5T567_DC2DAC, VDD_SOC_VAL, },
81 { RN5T567_DC3DAC, VDD_DDR_VAL, },
82 { RN5T567_DC1DAC_SLP, VDD_CORE_VAL_LP, },
83 { RN5T567_DC2DAC_SLP, VDD_SOC_VAL_LP, },
84 { RN5T567_DC3DAC_SLP, VDD_DDR_VAL_LP, },
85 { RN5T567_LDOEN1, 0x01f, ~0x1f, },
86 { RN5T567_LDOEN2, 0x10, ~0x30, },
87 { RN5T567_LDODIS, 0x00, },
88 { RN5T567_LDO3DAC, VDD_HIGH_VAL, },
89 { RN5T567_LDORTCDAC, VDD_RTC_VAL, },
90 { RN5T567_LDORTC1_SLOT, 0x0f, ~0x3f, },
94 static struct rn5t567_regs debug_regs[] __maybe_unused = {
108 static int rn5t567_setup_regs(struct rn5t567_regs *r, size_t count)
113 for (i = 0; i < count; i++, r++) {
117 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
118 if ((value & ~r->mask) != r->val) {
119 printf("Changing PMIC reg %02x from %02x to %02x\n",
120 r->addr, value, r->val);
123 printf("%s: failed to read PMIC register %02x: %d\n",
124 __func__, r->addr, ret);
128 // value = (value & ~r->mask) | r->val;
129 ret = i2c_write(CONFIG_SYS_I2C_SLAVE,
130 r->addr, 1, &r->val, 1);
132 printf("%s: failed to write PMIC register %02x: %d\n",
133 __func__, r->addr, ret);
137 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
138 printf("PMIC reg %02x is %02x\n", r->addr, value);
142 for (i = 0; i < ARRAY_SIZE(debug_regs); i++) {
146 for (j = r->addr; j < r->addr + r->val; j++) {
149 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, j, 1, &value, 1);
150 printf("PMIC reg %02x = %02x\n",
155 debug("%s() complete\n", __func__);
159 int setup_pmic_voltages(void)
164 ret = i2c_probe(CONFIG_SYS_I2C_SLAVE);
166 printf("Failed to initialize I2C\n");
170 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, 0x11, 1, &value, 1);
172 printf("%s: i2c_read error: %d\n", __func__, ret);
176 ret = rn5t567_setup_regs(rn5t567_regs, ARRAY_SIZE(rn5t567_regs));
180 printf("VDDCORE set to %umV\n",
181 DIV_ROUND(regval_to_mV(VDD_CORE_VAL), 10));
182 printf("VDDSOC set to %umV\n",
183 DIV_ROUND(regval_to_mV(VDD_SOC_VAL), 10));