mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 08:28:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
243 lines
5.3 KiB
C
243 lines
5.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2012
|
|
* Henrik Nordstrom <henrik@henriknordstrom.net>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <asm/arch/pmic_bus.h>
|
|
#include <axp_pmic.h>
|
|
#include <linux/delay.h>
|
|
|
|
#ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_08
|
|
# define AXP209_VRC_SLOPE AXP209_VRC_LDO3_800uV_uS
|
|
#endif
|
|
#ifdef CONFIG_AXP_ALDO3_VOLT_SLOPE_16
|
|
# define AXP209_VRC_SLOPE AXP209_VRC_LDO3_1600uV_uS
|
|
#endif
|
|
#if defined CONFIG_AXP_ALDO3_VOLT_SLOPE_NONE || !defined AXP209_VRC_SLOPE
|
|
# define AXP209_VRC_SLOPE 0x00
|
|
#endif
|
|
|
|
static u8 axp209_mvolt_to_cfg(int mvolt, int min, int max, int div)
|
|
{
|
|
if (mvolt < min)
|
|
mvolt = min;
|
|
else if (mvolt > max)
|
|
mvolt = max;
|
|
|
|
return (mvolt - min) / div;
|
|
}
|
|
|
|
int axp_set_dcdc2(unsigned int mvolt)
|
|
{
|
|
int rc;
|
|
u8 cfg, current;
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_DCDC2);
|
|
|
|
rc = pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC2);
|
|
if (rc)
|
|
return rc;
|
|
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
|
|
|
|
/* Do we really need to be this gentle? It has built-in voltage slope */
|
|
while ((rc = pmic_bus_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0 &&
|
|
current != cfg) {
|
|
if (current < cfg)
|
|
current++;
|
|
else
|
|
current--;
|
|
|
|
rc = pmic_bus_write(AXP209_DCDC2_VOLTAGE, current);
|
|
if (rc)
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int axp_set_dcdc3(unsigned int mvolt)
|
|
{
|
|
u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
|
|
int rc;
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_DCDC3);
|
|
|
|
rc = pmic_bus_write(AXP209_DCDC3_VOLTAGE, cfg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_DCDC3);
|
|
}
|
|
|
|
int axp_set_aldo2(unsigned int mvolt)
|
|
{
|
|
int rc;
|
|
u8 cfg, reg;
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_LDO2);
|
|
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
|
|
|
|
rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
|
|
if (rc)
|
|
return rc;
|
|
|
|
reg |= AXP209_LDO24_LDO2_SET(reg, cfg);
|
|
rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO2);
|
|
}
|
|
|
|
int axp_set_aldo3(unsigned int mvolt)
|
|
{
|
|
u8 cfg;
|
|
int rc;
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_LDO3);
|
|
|
|
/*
|
|
* Some boards have trouble reaching the target voltage without causing
|
|
* great inrush currents. To prevent this, boards can enable a certain
|
|
* slope to ramp up voltage. Note, this only works when changing an
|
|
* already active power rail. When toggling power on, the AXP ramps up
|
|
* steeply at 0.0167 V/uS.
|
|
*/
|
|
rc = pmic_bus_read(AXP209_VRC_DCDC2_LDO3, &cfg);
|
|
cfg = AXP209_VRC_LDO3_SLOPE_SET(cfg, AXP209_VRC_SLOPE);
|
|
rc |= pmic_bus_write(AXP209_VRC_DCDC2_LDO3, cfg);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
#ifdef CONFIG_AXP_ALDO3_INRUSH_QUIRK
|
|
/*
|
|
* On some boards, LDO3 has a too big capacitor installed. When
|
|
* turning on LDO3, this causes the AXP209 to shutdown on
|
|
* voltages over 1.9 volt. As a workaround, we enable LDO3
|
|
* first with the lowest possible voltage. If this still causes
|
|
* high inrush currents, the voltage slope should be increased.
|
|
*/
|
|
rc = pmic_bus_read(AXP209_OUTPUT_CTRL, &cfg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (!(cfg & AXP209_OUTPUT_CTRL_LDO3)) {
|
|
rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, 0x0); /* 0.7 Volt */
|
|
mdelay(1);
|
|
rc |= pmic_bus_setbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_LDO3);
|
|
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
if (mvolt == -1) {
|
|
cfg = AXP209_LDO3_VOLTAGE_FROM_LDO3IN;
|
|
} else {
|
|
cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
|
|
cfg = AXP209_LDO3_VOLTAGE_SET(cfg);
|
|
}
|
|
|
|
rc = pmic_bus_write(AXP209_LDO3_VOLTAGE, cfg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO3);
|
|
}
|
|
|
|
int axp_set_aldo4(unsigned int mvolt)
|
|
{
|
|
int rc;
|
|
static const unsigned int vindex[] = {
|
|
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
|
|
2700, 2800, 3000, 3100, 3200, 3300
|
|
};
|
|
u8 cfg, reg;
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP209_OUTPUT_CTRL,
|
|
AXP209_OUTPUT_CTRL_LDO4);
|
|
|
|
/* Translate mvolt to register cfg value, requested <= selected */
|
|
for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
|
|
|
|
rc = pmic_bus_read(AXP209_LDO24_VOLTAGE, ®);
|
|
if (rc)
|
|
return rc;
|
|
|
|
reg |= AXP209_LDO24_LDO4_SET(reg, cfg);
|
|
rc = pmic_bus_write(AXP209_LDO24_VOLTAGE, reg);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return pmic_bus_setbits(AXP209_OUTPUT_CTRL, AXP209_OUTPUT_CTRL_LDO4);
|
|
}
|
|
|
|
int axp_init(void)
|
|
{
|
|
u8 ver;
|
|
int i, rc;
|
|
|
|
rc = pmic_bus_init();
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = pmic_bus_read(AXP209_CHIP_VERSION, &ver);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((ver & AXP209_CHIP_VERSION_MASK) != 0x1)
|
|
return -EINVAL;
|
|
|
|
/* Mask all interrupts */
|
|
for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) {
|
|
rc = pmic_bus_write(i, 0);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
|
|
* from android these are sometimes on.
|
|
*/
|
|
rc = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
pmic_bus_write(AXP209_SHUTDOWN, AXP209_POWEROFF);
|
|
|
|
/* infinite loop during shutdown */
|
|
while (1) {}
|
|
|
|
/* not reached */
|
|
return 0;
|
|
}
|