183d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
214bc66bdSHenrik Nordstrom /*
314bc66bdSHenrik Nordstrom * (C) Copyright 2012
414bc66bdSHenrik Nordstrom * Henrik Nordstrom <henrik@henriknordstrom.net>
514bc66bdSHenrik Nordstrom */
614bc66bdSHenrik Nordstrom
714bc66bdSHenrik Nordstrom #include <common.h>
8467e92b3SMichael van Slingerland #include <command.h>
930490b52SHans de Goede #include <asm/arch/pmic_bus.h>
106944aff1SHans de Goede #include <axp_pmic.h>
1114bc66bdSHenrik Nordstrom
1261436d50SOlliver Schinagl #ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_08
1361436d50SOlliver Schinagl # define AXP209_VRC_SLOPE AXP209_VRC_LDO3_800uV_uS
1461436d50SOlliver Schinagl #endif
1561436d50SOlliver Schinagl #ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_16
1661436d50SOlliver Schinagl # define AXP209_VRC_SLOPE AXP209_VRC_LDO3_1600uV_uS
1761436d50SOlliver Schinagl #endif
1861436d50SOlliver Schinagl #if defined CONFIG_AXP_ALDO3_VOLT_SLOPE_NONE || !defined AXP209_VRC_SLOPE
1961436d50SOlliver Schinagl # define AXP209_VRC_SLOPE 0x00
2061436d50SOlliver Schinagl #endif
2161436d50SOlliver Schinagl
axp209_mvolt_to_cfg(int mvolt,int min,int max,int div)2214bc66bdSHenrik Nordstrom static u8 axp209_mvolt_to_cfg(int mvolt, int min, int max, int div)
2314bc66bdSHenrik Nordstrom {
2414bc66bdSHenrik Nordstrom if (mvolt < min)
2514bc66bdSHenrik Nordstrom mvolt = min;
2614bc66bdSHenrik Nordstrom else if (mvolt > max)
2714bc66bdSHenrik Nordstrom mvolt = max;
2814bc66bdSHenrik Nordstrom
2914bc66bdSHenrik Nordstrom return (mvolt - min) / div;
3014bc66bdSHenrik Nordstrom }
3114bc66bdSHenrik Nordstrom
axp_set_dcdc2(unsigned int mvolt)326944aff1SHans de Goede int axp_set_dcdc2(unsigned int mvolt)
3314bc66bdSHenrik Nordstrom {
3414bc66bdSHenrik Nordstrom int rc;
3514bc66bdSHenrik Nordstrom u8 cfg, current;
3614bc66bdSHenrik Nordstrom
37beba401fSHans de Goede if (mvolt == 0)
38beba401fSHans de Goede return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
39beba401fSHans de Goede AXP209_OUTPUT_CTRL_DCDC2);
40beba401fSHans de Goede
41beba401fSHans de Goede rc = pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC2);
42beba401fSHans de Goede if (rc)
43beba401fSHans de Goede return rc;
44beba401fSHans de Goede
4514bc66bdSHenrik Nordstrom cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
4614bc66bdSHenrik Nordstrom
4714bc66bdSHenrik Nordstrom /* Do we really need to be this gentle? It has built-in voltage slope */
4830490b52SHans de Goede while ((rc = pmic_bus_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
4914bc66bdSHenrik Nordstrom current != cfg) {
5014bc66bdSHenrik Nordstrom if (current < cfg)
5114bc66bdSHenrik Nordstrom current++;
5214bc66bdSHenrik Nordstrom else
5314bc66bdSHenrik Nordstrom current--;
5414bc66bdSHenrik Nordstrom
5530490b52SHans de Goede rc = pmic_bus_write(AXP209_DCDC2_VOLTAGE, current);
5614bc66bdSHenrik Nordstrom if (rc)
5714bc66bdSHenrik Nordstrom break;
5814bc66bdSHenrik Nordstrom }
5914bc66bdSHenrik Nordstrom
6014bc66bdSHenrik Nordstrom return rc;
6114bc66bdSHenrik Nordstrom }
6214bc66bdSHenrik Nordstrom
axp_set_dcdc3(unsigned int mvolt)636944aff1SHans de Goede int axp_set_dcdc3(unsigned int mvolt)
6414bc66bdSHenrik Nordstrom {
6514bc66bdSHenrik Nordstrom u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
66beba401fSHans de Goede int rc;
6714bc66bdSHenrik Nordstrom
68beba401fSHans de Goede if (mvolt == 0)
69beba401fSHans de Goede return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
70beba401fSHans de Goede AXP209_OUTPUT_CTRL_DCDC3);
71beba401fSHans de Goede
72beba401fSHans de Goede rc = pmic_bus_write(AXP209_DCDC3_VOLTAGE, cfg);
73beba401fSHans de Goede if (rc)
74beba401fSHans de Goede return rc;
75beba401fSHans de Goede
76beba401fSHans de Goede return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC3);
7714bc66bdSHenrik Nordstrom }
7814bc66bdSHenrik Nordstrom
axp_set_aldo2(unsigned int mvolt)796944aff1SHans de Goede int axp_set_aldo2(unsigned int mvolt)
8014bc66bdSHenrik Nordstrom {
8114bc66bdSHenrik Nordstrom int rc;
8214bc66bdSHenrik Nordstrom u8 cfg, reg;
8314bc66bdSHenrik Nordstrom
84beba401fSHans de Goede if (mvolt == 0)
85beba401fSHans de Goede return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
86beba401fSHans de Goede AXP209_OUTPUT_CTRL_LDO2);
87beba401fSHans de Goede
8814bc66bdSHenrik Nordstrom cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
8914bc66bdSHenrik Nordstrom
9030490b52SHans de Goede rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
9114bc66bdSHenrik Nordstrom if (rc)
9214bc66bdSHenrik Nordstrom return rc;
9314bc66bdSHenrik Nordstrom
943f7d76a7SOlliver Schinagl reg |= AXP209_LDO24_LDO2_SET(reg, cfg);
95beba401fSHans de Goede rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
96beba401fSHans de Goede if (rc)
97beba401fSHans de Goede return rc;
98beba401fSHans de Goede
99beba401fSHans de Goede return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO2);
10014bc66bdSHenrik Nordstrom }
10114bc66bdSHenrik Nordstrom
axp_set_aldo3(unsigned int mvolt)1026944aff1SHans de Goede int axp_set_aldo3(unsigned int mvolt)
10314bc66bdSHenrik Nordstrom {
10414bc66bdSHenrik Nordstrom u8 cfg;
105beba401fSHans de Goede int rc;
106beba401fSHans de Goede
107beba401fSHans de Goede if (mvolt == 0)
108beba401fSHans de Goede return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
109beba401fSHans de Goede AXP209_OUTPUT_CTRL_LDO3);
11014bc66bdSHenrik Nordstrom
11161436d50SOlliver Schinagl /*
11261436d50SOlliver Schinagl * Some boards have trouble reaching the target voltage without causing
11361436d50SOlliver Schinagl * great inrush currents. To prevent this, boards can enable a certain
11461436d50SOlliver Schinagl * slope to ramp up voltage. Note, this only works when changing an
11561436d50SOlliver Schinagl * already active power rail. When toggling power on, the AXP ramps up
11661436d50SOlliver Schinagl * steeply at 0.0167 V/uS.
11761436d50SOlliver Schinagl */
11861436d50SOlliver Schinagl rc = pmic_bus_read(AXP209_VRC_DCDC2_LDO3, &cfg);
11961436d50SOlliver Schinagl cfg = AXP209_VRC_LDO3_SLOPE_SET(cfg, AXP209_VRC_SLOPE);
12061436d50SOlliver Schinagl rc |= pmic_bus_write(AXP209_VRC_DCDC2_LDO3, cfg);
12161436d50SOlliver Schinagl
12261436d50SOlliver Schinagl if (rc)
12361436d50SOlliver Schinagl return rc;
12461436d50SOlliver Schinagl
125*ef52605eSOlliver Schinagl #ifdef CONFIG_AXP_ALDO3_INRUSH_QUIRK
126*ef52605eSOlliver Schinagl /*
127*ef52605eSOlliver Schinagl * On some boards, LDO3 has a too big capacitor installed. When
128*ef52605eSOlliver Schinagl * turning on LDO3, this causes the AXP209 to shutdown on
129*ef52605eSOlliver Schinagl * voltages over 1.9 volt. As a workaround, we enable LDO3
130*ef52605eSOlliver Schinagl * first with the lowest possible voltage. If this still causes
131*ef52605eSOlliver Schinagl * high inrush currents, the voltage slope should be increased.
132*ef52605eSOlliver Schinagl */
133*ef52605eSOlliver Schinagl rc = pmic_bus_read(AXP209_OUTPUT_CTRL, &cfg);
134*ef52605eSOlliver Schinagl if (rc)
135*ef52605eSOlliver Schinagl return rc;
136*ef52605eSOlliver Schinagl
137*ef52605eSOlliver Schinagl if (!(cfg & AXP209_OUTPUT_CTRL_LDO3)) {
138*ef52605eSOlliver Schinagl rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, 0x0); /* 0.7 Volt */
139*ef52605eSOlliver Schinagl mdelay(1);
140*ef52605eSOlliver Schinagl rc |= pmic_bus_setbits(AXP209_OUTPUT_CTRL,
141*ef52605eSOlliver Schinagl AXP209_OUTPUT_CTRL_LDO3);
142*ef52605eSOlliver Schinagl
143*ef52605eSOlliver Schinagl if (rc)
144*ef52605eSOlliver Schinagl return rc;
145*ef52605eSOlliver Schinagl }
146*ef52605eSOlliver Schinagl #endif
147*ef52605eSOlliver Schinagl
1483f7d76a7SOlliver Schinagl if (mvolt == -1) {
1493f7d76a7SOlliver Schinagl cfg = AXP209_LDO3_VOLTAGE_FROM_LDO3IN;
1503f7d76a7SOlliver Schinagl } else {
15199deda1dSIain Paton cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
1523f7d76a7SOlliver Schinagl cfg = AXP209_LDO3_VOLTAGE_SET(cfg);
1533f7d76a7SOlliver Schinagl }
15414bc66bdSHenrik Nordstrom
155beba401fSHans de Goede rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, cfg);
156beba401fSHans de Goede if (rc)
157beba401fSHans de Goede return rc;
158beba401fSHans de Goede
159beba401fSHans de Goede return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO3);
16014bc66bdSHenrik Nordstrom }
16114bc66bdSHenrik Nordstrom
axp_set_aldo4(unsigned int mvolt)1626944aff1SHans de Goede int axp_set_aldo4(unsigned int mvolt)
16314bc66bdSHenrik Nordstrom {
16414bc66bdSHenrik Nordstrom int rc;
1656944aff1SHans de Goede static const unsigned int vindex[] = {
16614bc66bdSHenrik Nordstrom 1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
16714bc66bdSHenrik Nordstrom 2700, 2800, 3000, 3100, 3200, 3300
16814bc66bdSHenrik Nordstrom };
16914bc66bdSHenrik Nordstrom u8 cfg, reg;
17014bc66bdSHenrik Nordstrom
171beba401fSHans de Goede if (mvolt == 0)
172beba401fSHans de Goede return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
173beba401fSHans de Goede AXP209_OUTPUT_CTRL_LDO4);
174beba401fSHans de Goede
17514bc66bdSHenrik Nordstrom /* Translate mvolt to register cfg value, requested <= selected */
17614bc66bdSHenrik Nordstrom for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
17714bc66bdSHenrik Nordstrom
17830490b52SHans de Goede rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
17914bc66bdSHenrik Nordstrom if (rc)
18014bc66bdSHenrik Nordstrom return rc;
18114bc66bdSHenrik Nordstrom
1823f7d76a7SOlliver Schinagl reg |= AXP209_LDO24_LDO4_SET(reg, cfg);
183beba401fSHans de Goede rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
184beba401fSHans de Goede if (rc)
185beba401fSHans de Goede return rc;
186beba401fSHans de Goede
187beba401fSHans de Goede return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO4);
18814bc66bdSHenrik Nordstrom }
18914bc66bdSHenrik Nordstrom
axp_init(void)1906944aff1SHans de Goede int axp_init(void)
19114bc66bdSHenrik Nordstrom {
19214bc66bdSHenrik Nordstrom u8 ver;
1939dcf68faSHans de Goede int i, rc;
19414bc66bdSHenrik Nordstrom
19530490b52SHans de Goede rc = pmic_bus_init();
19630490b52SHans de Goede if (rc)
19730490b52SHans de Goede return rc;
19830490b52SHans de Goede
19930490b52SHans de Goede rc = pmic_bus_read(AXP209_CHIP_VERSION, &ver);
20014bc66bdSHenrik Nordstrom if (rc)
20114bc66bdSHenrik Nordstrom return rc;
20214bc66bdSHenrik Nordstrom
203f5eebc79SOlliver Schinagl if ((ver & AXP209_CHIP_VERSION_MASK) != 0x1)
204505cf475SJaehoon Chung return -EINVAL;
20514bc66bdSHenrik Nordstrom
2069dcf68faSHans de Goede /* Mask all interrupts */
2079dcf68faSHans de Goede for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) {
20830490b52SHans de Goede rc = pmic_bus_write(i, 0);
2099dcf68faSHans de Goede if (rc)
2109dcf68faSHans de Goede return rc;
2119dcf68faSHans de Goede }
2129dcf68faSHans de Goede
213253e62bfSHans de Goede /*
214253e62bfSHans de Goede * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
215253e62bfSHans de Goede * from android these are sometimes on.
216253e62bfSHans de Goede */
217253e62bfSHans de Goede rc = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
218253e62bfSHans de Goede if (rc)
219253e62bfSHans de Goede return rc;
220253e62bfSHans de Goede
221253e62bfSHans de Goede rc = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
222253e62bfSHans de Goede if (rc)
223253e62bfSHans de Goede return rc;
224253e62bfSHans de Goede
225253e62bfSHans de Goede rc = pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
226253e62bfSHans de Goede if (rc)
227253e62bfSHans de Goede return rc;
228253e62bfSHans de Goede
22914bc66bdSHenrik Nordstrom return 0;
23014bc66bdSHenrik Nordstrom }
231467e92b3SMichael van Slingerland
do_poweroff(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])232467e92b3SMichael van Slingerland int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
233467e92b3SMichael van Slingerland {
234467e92b3SMichael van Slingerland pmic_bus_write(AXP209_SHUTDOWN, AXP209_POWEROFF);
235467e92b3SMichael van Slingerland
236467e92b3SMichael van Slingerland /* infinite loop during shutdown */
237467e92b3SMichael van Slingerland while (1) {}
238467e92b3SMichael van Slingerland
239467e92b3SMichael van Slingerland /* not reached */
240467e92b3SMichael van Slingerland return 0;
241467e92b3SMichael van Slingerland }
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